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64 followers · 13 following

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@tb06

Achievements

Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor

Achievements

Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor

Highlights

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MateusRodCosta/README.md

👋 Hello, I'm Mateus Rodrigues Costa

I also go by "Matias" in certain gaming contexts.

👨‍💻 Software Engineer | Technical Writer

📍 Penápolis - SP, Brazil 🇧🇷

I am a driven Software Engineer with over 5 years of professional experience, passionate about crafting high-quality, performant, and resource-efficient software. My current focus is firmly rooted in native Android development utilizing Kotlin and Jetpack Compose, alongside systems programming and tooling with Rust.

💻 Tech Stack & Tools

  • Languages: Kotlin, Rust, Java, Dart, JavaScript, SQL
  • Mobile & UI: Jetpack Compose, Flutter, Clean Architecture, Multi-module design
  • OS & Systems: Linux (Fedora/RHEL ecosystem), Gio (GLib)

💡 Notable Projects

  • Save Locally [Kotlin, Jetpack Compose, Android] [AGPLv3+] - An open-source (AGPLv3+) privacy-respecting Android utility built with Jetpack Compose. It registers as a Share target, invoking the system file picker to allow users to save files to any local directory, bridging the usability gap for apps lacking a native "Save" option
  • Vidya Music
    • Vidya Music (Rewrite) [Kotlin, Jetpack Compose, Android] [AGPLv3+] - Architected a complete native Android rewrite of the legacy application from the ground up to maximize performance. Built using a multi-module Clean Architecture approach, successfully migrating the active user base to a highly optimized native experience
    • Vidya Music (Legacy) [Dart, Flutter, Android, iOS] [AGPLv3+] - The legacy cross-platform player for the renowned VIP Aersia VGM playlist
  • bign-handheld-thumbnailer [Rust, Gio, Linux] [GPLv2+] - A Linux system tool built in Rust to extract embedded cover art from Nintendo DS and 3DS ROMs. It strictly adheres to the Freedesktop Thumbnail Managing Standard and implements advanced file type detection using Gio and custom mimetypes

🐧 Notable Open Source Contributions

Fedora Project (Contributor, FAS: mateusrodcosta) | Feb 2021 - Present

  • Packager: Packager and maintainer for the official Fedora/RHEL repositories, ensuring compliance with strict packaging guidelines (currently focusing on the bign-handheld-thumbnailer package)
  • Technical Writer: Regular writer for Fedora Magazine, producing in-depth technical writeups and tutorials. Check out my list of published articles
  • Fedora Docs: Contributor to the official system documentation

🎮🛠 Gaming Modding

📊 Stats

GitHub StatsGitHub Stats

Pinned Loading

  1. SaveLocallySaveLocallyPublic

    Save files locally via the share menu

    Kotlin 281 11

  2. VidyaMusicVidyaMusicPublic

    [REWRITE] [Compose] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Kotlin

  3. vidya_musicvidya_musicPublic archive

    [DEPRECATED] [Flutter] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Dart 11 1

  4. bign-handheld-thumbnailerbign-handheld-thumbnailerPublic

    Thumbnailer for Nintendo handheld game consoles (DS and 3DS) roms and homebrew

    Rust 25 2

  5. gnome-shell-extension-default-workspacegnome-shell-extension-default-workspacePublic

    A gnome-shell extension that switches to the specified workspace on login.

    JavaScript 5 2

  6. My personal Picard naming script, ... My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    1
    title: MateusRodCosta's Picard Naming Script
    2
    description: |
    3
     My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    4
     AI usage disclaimer: this script implements Gemini suggestions to better achieve its goal and valid the script logic.
    5
    author: Mateus Rodrigues Costa (MateusRodCosta)
, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
MateusRodCosta (Mateus R. Costa) · GitHub
Skip to content
View MateusRodCosta's full-sized avatar
64
followers
 · 13
following

Sponsors
@tb06
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Highlights
  • 
Pro


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MateusRodCosta/README.md
👋 Hello, I'm Mateus Rodrigues Costa
I also go by "Matias" in certain gaming contexts.
👨‍💻 Software Engineer | Technical Writer
📍 Penápolis - SP, Brazil 🇧🇷
I am a driven Software Engineer with over 5 years of professional experience, passionate about crafting high-quality, performant, and resource-efficient software. My current focus is firmly rooted in native Android development utilizing Kotlin and Jetpack Compose, alongside systems programming and tooling with Rust.
💻 Tech Stack & Tools
  • Languages: Kotlin, Rust, Java, Dart, JavaScript, SQL
  • Mobile & UI: Jetpack Compose, Flutter, Clean Architecture, Multi-module design
  • OS & Systems: Linux (Fedora/RHEL ecosystem), Gio (GLib)
💡 Notable Projects
  • Save Locally [Kotlin, Jetpack Compose, Android] [AGPLv3+] - An open-source (AGPLv3+) privacy-respecting Android utility built with Jetpack Compose. It registers as a Share target, invoking the system file picker to allow users to save files to any local directory, bridging the usability gap for apps lacking a native "Save" option
  • Vidya Music
    • Vidya Music (Rewrite) [Kotlin, Jetpack Compose, Android] [AGPLv3+] - Architected a complete native Android rewrite of the legacy application from the ground up to maximize performance. Built using a multi-module Clean Architecture approach, successfully migrating the active user base to a highly optimized native experience
    • Vidya Music (Legacy) [Dart, Flutter, Android, iOS] [AGPLv3+] - The legacy cross-platform player for the renowned VIP Aersia VGM playlist
  • bign-handheld-thumbnailer [Rust, Gio, Linux] [GPLv2+] - A Linux system tool built in Rust to extract embedded cover art from Nintendo DS and 3DS ROMs. It strictly adheres to the Freedesktop Thumbnail Managing Standard and implements advanced file type detection using Gio and custom mimetypes
🐧 Notable Open Source Contributions
Fedora Project (Contributor, FAS: mateusrodcosta) | Feb 2021 - Present
  • Packager: Packager and maintainer for the official Fedora/RHEL repositories, ensuring compliance with strict packaging guidelines (currently focusing on the bign-handheld-thumbnailer package)
  • Technical Writer: Regular writer for Fedora Magazine, producing in-depth technical writeups and tutorials. Check out my list of published articles
  • Fedora Docs: Contributor to the official system documentation
🎮🛠 Gaming Modding
📊 Stats
GitHub StatsGitHub Stats

Pinned
Loading
  1. SaveLocallySaveLocallyPublic
    
Save files locally via the share menu

    Kotlin
281

11

  2. VidyaMusicVidyaMusicPublic
    
[REWRITE] [Compose] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Kotlin
  3. vidya_musicvidya_musicPublic archive
    
[DEPRECATED] [Flutter] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Dart
11

1

  4. bign-handheld-thumbnailerbign-handheld-thumbnailerPublic
    
Thumbnailer for Nintendo handheld game consoles (DS and 3DS) roms and homebrew

    Rust
25

2

  5. gnome-shell-extension-default-workspacegnome-shell-extension-default-workspacePublic
    
A gnome-shell extension that switches to the specified workspace on login.

    JavaScript
5

2

  6.  My personal Picard naming script, ... My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    1
    title: MateusRodCosta's Picard Naming Script
    2
    description: |
    3
     My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    4
     AI usage disclaimer: this script implements Gemini suggestions to better achieve its goal and valid the script logic.
    5
    author: Mateus Rodrigues Costa (MateusRodCosta)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
MateusRodCosta (Mateus R. Costa) · GitHub
Skip to content
View MateusRodCosta's full-sized avatar
64
followers
 · 13
following

Sponsors
@tb06
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Highlights
  • 
Pro


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MateusRodCosta/README.md
👋 Hello, I'm Mateus Rodrigues Costa
I also go by "Matias" in certain gaming contexts.
👨‍💻 Software Engineer | Technical Writer
📍 Penápolis - SP, Brazil 🇧🇷
I am a driven Software Engineer with over 5 years of professional experience, passionate about crafting high-quality, performant, and resource-efficient software. My current focus is firmly rooted in native Android development utilizing Kotlin and Jetpack Compose, alongside systems programming and tooling with Rust.
💻 Tech Stack & Tools
  • Languages: Kotlin, Rust, Java, Dart, JavaScript, SQL
  • Mobile & UI: Jetpack Compose, Flutter, Clean Architecture, Multi-module design
  • OS & Systems: Linux (Fedora/RHEL ecosystem), Gio (GLib)
💡 Notable Projects
  • Save Locally [Kotlin, Jetpack Compose, Android] [AGPLv3+] - An open-source (AGPLv3+) privacy-respecting Android utility built with Jetpack Compose. It registers as a Share target, invoking the system file picker to allow users to save files to any local directory, bridging the usability gap for apps lacking a native "Save" option
  • Vidya Music
    • Vidya Music (Rewrite) [Kotlin, Jetpack Compose, Android] [AGPLv3+] - Architected a complete native Android rewrite of the legacy application from the ground up to maximize performance. Built using a multi-module Clean Architecture approach, successfully migrating the active user base to a highly optimized native experience
    • Vidya Music (Legacy) [Dart, Flutter, Android, iOS] [AGPLv3+] - The legacy cross-platform player for the renowned VIP Aersia VGM playlist
  • bign-handheld-thumbnailer [Rust, Gio, Linux] [GPLv2+] - A Linux system tool built in Rust to extract embedded cover art from Nintendo DS and 3DS ROMs. It strictly adheres to the Freedesktop Thumbnail Managing Standard and implements advanced file type detection using Gio and custom mimetypes
🐧 Notable Open Source Contributions
Fedora Project (Contributor, FAS: mateusrodcosta) | Feb 2021 - Present
  • Packager: Packager and maintainer for the official Fedora/RHEL repositories, ensuring compliance with strict packaging guidelines (currently focusing on the bign-handheld-thumbnailer package)
  • Technical Writer: Regular writer for Fedora Magazine, producing in-depth technical writeups and tutorials. Check out my list of published articles
  • Fedora Docs: Contributor to the official system documentation
🎮🛠 Gaming Modding
📊 Stats
GitHub StatsGitHub Stats

Pinned
Loading
  1. SaveLocallySaveLocallyPublic
    
Save files locally via the share menu

    Kotlin
281

11

  2. VidyaMusicVidyaMusicPublic
    
[REWRITE] [Compose] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Kotlin
  3. vidya_musicvidya_musicPublic archive
    
[DEPRECATED] [Flutter] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Dart
11

1

  4. bign-handheld-thumbnailerbign-handheld-thumbnailerPublic
    
Thumbnailer for Nintendo handheld game consoles (DS and 3DS) roms and homebrew

    Rust
25

2

  5. gnome-shell-extension-default-workspacegnome-shell-extension-default-workspacePublic
    
A gnome-shell extension that switches to the specified workspace on login.

    JavaScript
5

2

  6.  My personal Picard naming script, ... My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    1
    title: MateusRodCosta's Picard Naming Script
    2
    description: |
    3
     My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    4
     AI usage disclaimer: this script implements Gemini suggestions to better achieve its goal and valid the script logic.
    5
    author: Mateus Rodrigues Costa (MateusRodCosta)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
MateusRodCosta (Mateus R. Costa) · GitHub
Skip to content
View MateusRodCosta's full-sized avatar
64
followers
 · 13
following

Sponsors
@tb06
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Highlights
  • 
Pro


Block or report MateusRodCosta

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MateusRodCosta/README.md
👋 Hello, I'm Mateus Rodrigues Costa
I also go by "Matias" in certain gaming contexts.
👨‍💻 Software Engineer | Technical Writer
📍 Penápolis - SP, Brazil 🇧🇷
I am a driven Software Engineer with over 5 years of professional experience, passionate about crafting high-quality, performant, and resource-efficient software. My current focus is firmly rooted in native Android development utilizing Kotlin and Jetpack Compose, alongside systems programming and tooling with Rust.
💻 Tech Stack & Tools
  • Languages: Kotlin, Rust, Java, Dart, JavaScript, SQL
  • Mobile & UI: Jetpack Compose, Flutter, Clean Architecture, Multi-module design
  • OS & Systems: Linux (Fedora/RHEL ecosystem), Gio (GLib)
💡 Notable Projects
  • Save Locally [Kotlin, Jetpack Compose, Android] [AGPLv3+] - An open-source (AGPLv3+) privacy-respecting Android utility built with Jetpack Compose. It registers as a Share target, invoking the system file picker to allow users to save files to any local directory, bridging the usability gap for apps lacking a native "Save" option
  • Vidya Music
    • Vidya Music (Rewrite) [Kotlin, Jetpack Compose, Android] [AGPLv3+] - Architected a complete native Android rewrite of the legacy application from the ground up to maximize performance. Built using a multi-module Clean Architecture approach, successfully migrating the active user base to a highly optimized native experience
    • Vidya Music (Legacy) [Dart, Flutter, Android, iOS] [AGPLv3+] - The legacy cross-platform player for the renowned VIP Aersia VGM playlist
  • bign-handheld-thumbnailer [Rust, Gio, Linux] [GPLv2+] - A Linux system tool built in Rust to extract embedded cover art from Nintendo DS and 3DS ROMs. It strictly adheres to the Freedesktop Thumbnail Managing Standard and implements advanced file type detection using Gio and custom mimetypes
🐧 Notable Open Source Contributions
Fedora Project (Contributor, FAS: mateusrodcosta) | Feb 2021 - Present
  • Packager: Packager and maintainer for the official Fedora/RHEL repositories, ensuring compliance with strict packaging guidelines (currently focusing on the bign-handheld-thumbnailer package)
  • Technical Writer: Regular writer for Fedora Magazine, producing in-depth technical writeups and tutorials. Check out my list of published articles
  • Fedora Docs: Contributor to the official system documentation
🎮🛠 Gaming Modding
📊 Stats
GitHub StatsGitHub Stats

Pinned
Loading
  1. SaveLocallySaveLocallyPublic
    
Save files locally via the share menu

    Kotlin
281

11

  2. VidyaMusicVidyaMusicPublic
    
[REWRITE] [Compose] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Kotlin
  3. vidya_musicvidya_musicPublic archive
    
[DEPRECATED] [Flutter] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Dart
11

1

  4. bign-handheld-thumbnailerbign-handheld-thumbnailerPublic
    
Thumbnailer for Nintendo handheld game consoles (DS and 3DS) roms and homebrew

    Rust
25

2

  5. gnome-shell-extension-default-workspacegnome-shell-extension-default-workspacePublic
    
A gnome-shell extension that switches to the specified workspace on login.

    JavaScript
5

2

  6.  My personal Picard naming script, ... My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    1
    title: MateusRodCosta's Picard Naming Script
    2
    description: |
    3
     My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    4
     AI usage disclaimer: this script implements Gemini suggestions to better achieve its goal and valid the script logic.
    5
    author: Mateus Rodrigues Costa (MateusRodCosta)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
MateusRodCosta (Mateus R. Costa) · GitHub
Skip to content
View MateusRodCosta's full-sized avatar
64
followers
 · 13
following

Sponsors
@tb06
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Highlights
  • 
Pro


Block or report MateusRodCosta

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MateusRodCosta/README.md
👋 Hello, I'm Mateus Rodrigues Costa
I also go by "Matias" in certain gaming contexts.
👨‍💻 Software Engineer | Technical Writer
📍 Penápolis - SP, Brazil 🇧🇷
I am a driven Software Engineer with over 5 years of professional experience, passionate about crafting high-quality, performant, and resource-efficient software. My current focus is firmly rooted in native Android development utilizing Kotlin and Jetpack Compose, alongside systems programming and tooling with Rust.
💻 Tech Stack & Tools
  • Languages: Kotlin, Rust, Java, Dart, JavaScript, SQL
  • Mobile & UI: Jetpack Compose, Flutter, Clean Architecture, Multi-module design
  • OS & Systems: Linux (Fedora/RHEL ecosystem), Gio (GLib)
💡 Notable Projects
  • Save Locally [Kotlin, Jetpack Compose, Android] [AGPLv3+] - An open-source (AGPLv3+) privacy-respecting Android utility built with Jetpack Compose. It registers as a Share target, invoking the system file picker to allow users to save files to any local directory, bridging the usability gap for apps lacking a native "Save" option
  • Vidya Music
    • Vidya Music (Rewrite) [Kotlin, Jetpack Compose, Android] [AGPLv3+] - Architected a complete native Android rewrite of the legacy application from the ground up to maximize performance. Built using a multi-module Clean Architecture approach, successfully migrating the active user base to a highly optimized native experience
    • Vidya Music (Legacy) [Dart, Flutter, Android, iOS] [AGPLv3+] - The legacy cross-platform player for the renowned VIP Aersia VGM playlist
  • bign-handheld-thumbnailer [Rust, Gio, Linux] [GPLv2+] - A Linux system tool built in Rust to extract embedded cover art from Nintendo DS and 3DS ROMs. It strictly adheres to the Freedesktop Thumbnail Managing Standard and implements advanced file type detection using Gio and custom mimetypes
🐧 Notable Open Source Contributions
Fedora Project (Contributor, FAS: mateusrodcosta) | Feb 2021 - Present
  • Packager: Packager and maintainer for the official Fedora/RHEL repositories, ensuring compliance with strict packaging guidelines (currently focusing on the bign-handheld-thumbnailer package)
  • Technical Writer: Regular writer for Fedora Magazine, producing in-depth technical writeups and tutorials. Check out my list of published articles
  • Fedora Docs: Contributor to the official system documentation
🎮🛠 Gaming Modding
📊 Stats
GitHub StatsGitHub Stats

Pinned
Loading
  1. SaveLocallySaveLocallyPublic
    
Save files locally via the share menu

    Kotlin
281

11

  2. VidyaMusicVidyaMusicPublic
    
[REWRITE] [Compose] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Kotlin
  3. vidya_musicvidya_musicPublic archive
    
[DEPRECATED] [Flutter] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Dart
11

1

  4. bign-handheld-thumbnailerbign-handheld-thumbnailerPublic
    
Thumbnailer for Nintendo handheld game consoles (DS and 3DS) roms and homebrew

    Rust
25

2

  5. gnome-shell-extension-default-workspacegnome-shell-extension-default-workspacePublic
    
A gnome-shell extension that switches to the specified workspace on login.

    JavaScript
5

2

  6.  My personal Picard naming script, ... My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    1
    title: MateusRodCosta's Picard Naming Script
    2
    description: |
    3
     My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    4
     AI usage disclaimer: this script implements Gemini suggestions to better achieve its goal and valid the script logic.
    5
    author: Mateus Rodrigues Costa (MateusRodCosta)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
MateusRodCosta (Mateus R. Costa) · GitHub
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View MateusRodCosta's full-sized avatar
64
followers
 · 13
following

Sponsors
@tb06
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Highlights
  • 
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MateusRodCosta/README.md
👋 Hello, I'm Mateus Rodrigues Costa
I also go by "Matias" in certain gaming contexts.
👨‍💻 Software Engineer | Technical Writer
📍 Penápolis - SP, Brazil 🇧🇷
I am a driven Software Engineer with over 5 years of professional experience, passionate about crafting high-quality, performant, and resource-efficient software. My current focus is firmly rooted in native Android development utilizing Kotlin and Jetpack Compose, alongside systems programming and tooling with Rust.
💻 Tech Stack & Tools
  • Languages: Kotlin, Rust, Java, Dart, JavaScript, SQL
  • Mobile & UI: Jetpack Compose, Flutter, Clean Architecture, Multi-module design
  • OS & Systems: Linux (Fedora/RHEL ecosystem), Gio (GLib)
💡 Notable Projects
  • Save Locally [Kotlin, Jetpack Compose, Android] [AGPLv3+] - An open-source (AGPLv3+) privacy-respecting Android utility built with Jetpack Compose. It registers as a Share target, invoking the system file picker to allow users to save files to any local directory, bridging the usability gap for apps lacking a native "Save" option
  • Vidya Music
    • Vidya Music (Rewrite) [Kotlin, Jetpack Compose, Android] [AGPLv3+] - Architected a complete native Android rewrite of the legacy application from the ground up to maximize performance. Built using a multi-module Clean Architecture approach, successfully migrating the active user base to a highly optimized native experience
    • Vidya Music (Legacy) [Dart, Flutter, Android, iOS] [AGPLv3+] - The legacy cross-platform player for the renowned VIP Aersia VGM playlist
  • bign-handheld-thumbnailer [Rust, Gio, Linux] [GPLv2+] - A Linux system tool built in Rust to extract embedded cover art from Nintendo DS and 3DS ROMs. It strictly adheres to the Freedesktop Thumbnail Managing Standard and implements advanced file type detection using Gio and custom mimetypes
🐧 Notable Open Source Contributions
Fedora Project (Contributor, FAS: mateusrodcosta) | Feb 2021 - Present
  • Packager: Packager and maintainer for the official Fedora/RHEL repositories, ensuring compliance with strict packaging guidelines (currently focusing on the bign-handheld-thumbnailer package)
  • Technical Writer: Regular writer for Fedora Magazine, producing in-depth technical writeups and tutorials. Check out my list of published articles
  • Fedora Docs: Contributor to the official system documentation
🎮🛠 Gaming Modding
📊 Stats
GitHub StatsGitHub Stats

Pinned
Loading
  1. SaveLocallySaveLocallyPublic
    
Save files locally via the share menu

    Kotlin
281

11

  2. VidyaMusicVidyaMusicPublic
    
[REWRITE] [Compose] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Kotlin
  3. vidya_musicvidya_musicPublic archive
    
[DEPRECATED] [Flutter] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Dart
11

1

  4. bign-handheld-thumbnailerbign-handheld-thumbnailerPublic
    
Thumbnailer for Nintendo handheld game consoles (DS and 3DS) roms and homebrew

    Rust
25

2

  5. gnome-shell-extension-default-workspacegnome-shell-extension-default-workspacePublic
    
A gnome-shell extension that switches to the specified workspace on login.

    JavaScript
5

2

  6.  My personal Picard naming script, ... My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    1
    title: MateusRodCosta's Picard Naming Script
    2
    description: |
    3
     My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    4
     AI usage disclaimer: this script implements Gemini suggestions to better achieve its goal and valid the script logic.
    5
    author: Mateus Rodrigues Costa (MateusRodCosta)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
MateusRodCosta (Mateus R. Costa) · GitHub
Skip to content
View MateusRodCosta's full-sized avatar
64
followers
 · 13
following

Sponsors
@tb06
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Highlights
  • 
Pro


Block or report MateusRodCosta

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Learn more about blocking users.


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MateusRodCosta/README.md
👋 Hello, I'm Mateus Rodrigues Costa
I also go by "Matias" in certain gaming contexts.
👨‍💻 Software Engineer | Technical Writer
📍 Penápolis - SP, Brazil 🇧🇷
I am a driven Software Engineer with over 5 years of professional experience, passionate about crafting high-quality, performant, and resource-efficient software. My current focus is firmly rooted in native Android development utilizing Kotlin and Jetpack Compose, alongside systems programming and tooling with Rust.
💻 Tech Stack & Tools
  • Languages: Kotlin, Rust, Java, Dart, JavaScript, SQL
  • Mobile & UI: Jetpack Compose, Flutter, Clean Architecture, Multi-module design
  • OS & Systems: Linux (Fedora/RHEL ecosystem), Gio (GLib)
💡 Notable Projects
  • Save Locally [Kotlin, Jetpack Compose, Android] [AGPLv3+] - An open-source (AGPLv3+) privacy-respecting Android utility built with Jetpack Compose. It registers as a Share target, invoking the system file picker to allow users to save files to any local directory, bridging the usability gap for apps lacking a native "Save" option
  • Vidya Music
    • Vidya Music (Rewrite) [Kotlin, Jetpack Compose, Android] [AGPLv3+] - Architected a complete native Android rewrite of the legacy application from the ground up to maximize performance. Built using a multi-module Clean Architecture approach, successfully migrating the active user base to a highly optimized native experience
    • Vidya Music (Legacy) [Dart, Flutter, Android, iOS] [AGPLv3+] - The legacy cross-platform player for the renowned VIP Aersia VGM playlist
  • bign-handheld-thumbnailer [Rust, Gio, Linux] [GPLv2+] - A Linux system tool built in Rust to extract embedded cover art from Nintendo DS and 3DS ROMs. It strictly adheres to the Freedesktop Thumbnail Managing Standard and implements advanced file type detection using Gio and custom mimetypes
🐧 Notable Open Source Contributions
Fedora Project (Contributor, FAS: mateusrodcosta) | Feb 2021 - Present
  • Packager: Packager and maintainer for the official Fedora/RHEL repositories, ensuring compliance with strict packaging guidelines (currently focusing on the bign-handheld-thumbnailer package)
  • Technical Writer: Regular writer for Fedora Magazine, producing in-depth technical writeups and tutorials. Check out my list of published articles
  • Fedora Docs: Contributor to the official system documentation
🎮🛠 Gaming Modding
📊 Stats
GitHub StatsGitHub Stats

Pinned
Loading
  1. SaveLocallySaveLocallyPublic
    
Save files locally via the share menu

    Kotlin
281

11

  2. VidyaMusicVidyaMusicPublic
    
[REWRITE] [Compose] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Kotlin
  3. vidya_musicvidya_musicPublic archive
    
[DEPRECATED] [Flutter] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Dart
11

1

  4. bign-handheld-thumbnailerbign-handheld-thumbnailerPublic
    
Thumbnailer for Nintendo handheld game consoles (DS and 3DS) roms and homebrew

    Rust
25

2

  5. gnome-shell-extension-default-workspacegnome-shell-extension-default-workspacePublic
    
A gnome-shell extension that switches to the specified workspace on login.

    JavaScript
5

2

  6.  My personal Picard naming script, ... My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    1
    title: MateusRodCosta's Picard Naming Script
    2
    description: |
    3
     My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    4
     AI usage disclaimer: this script implements Gemini suggestions to better achieve its goal and valid the script logic.
    5
    author: Mateus Rodrigues Costa (MateusRodCosta)

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
MateusRodCosta (Mateus R. Costa) · GitHub
Skip to content
View MateusRodCosta's full-sized avatar
64
followers
 · 13
following

Sponsors
@tb06
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Achievements
Achievement: Starstruckx2Achievement: Pair ExtraordinaireAchievement: Pull Sharkx3Achievement: YOLOAchievement: Arctic Code Vault Contributor
Highlights
  • 
Pro


Block or report MateusRodCosta

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MateusRodCosta/README.md
👋 Hello, I'm Mateus Rodrigues Costa
I also go by "Matias" in certain gaming contexts.
👨‍💻 Software Engineer | Technical Writer
📍 Penápolis - SP, Brazil 🇧🇷
I am a driven Software Engineer with over 5 years of professional experience, passionate about crafting high-quality, performant, and resource-efficient software. My current focus is firmly rooted in native Android development utilizing Kotlin and Jetpack Compose, alongside systems programming and tooling with Rust.
💻 Tech Stack & Tools
  • Languages: Kotlin, Rust, Java, Dart, JavaScript, SQL
  • Mobile & UI: Jetpack Compose, Flutter, Clean Architecture, Multi-module design
  • OS & Systems: Linux (Fedora/RHEL ecosystem), Gio (GLib)
💡 Notable Projects
  • Save Locally [Kotlin, Jetpack Compose, Android] [AGPLv3+] - An open-source (AGPLv3+) privacy-respecting Android utility built with Jetpack Compose. It registers as a Share target, invoking the system file picker to allow users to save files to any local directory, bridging the usability gap for apps lacking a native "Save" option
  • Vidya Music
    • Vidya Music (Rewrite) [Kotlin, Jetpack Compose, Android] [AGPLv3+] - Architected a complete native Android rewrite of the legacy application from the ground up to maximize performance. Built using a multi-module Clean Architecture approach, successfully migrating the active user base to a highly optimized native experience
    • Vidya Music (Legacy) [Dart, Flutter, Android, iOS] [AGPLv3+] - The legacy cross-platform player for the renowned VIP Aersia VGM playlist
  • bign-handheld-thumbnailer [Rust, Gio, Linux] [GPLv2+] - A Linux system tool built in Rust to extract embedded cover art from Nintendo DS and 3DS ROMs. It strictly adheres to the Freedesktop Thumbnail Managing Standard and implements advanced file type detection using Gio and custom mimetypes
🐧 Notable Open Source Contributions
Fedora Project (Contributor, FAS: mateusrodcosta) | Feb 2021 - Present
  • Packager: Packager and maintainer for the official Fedora/RHEL repositories, ensuring compliance with strict packaging guidelines (currently focusing on the bign-handheld-thumbnailer package)
  • Technical Writer: Regular writer for Fedora Magazine, producing in-depth technical writeups and tutorials. Check out my list of published articles
  • Fedora Docs: Contributor to the official system documentation
🎮🛠 Gaming Modding
📊 Stats
GitHub StatsGitHub Stats

Pinned
Loading
  1. SaveLocallySaveLocallyPublic
    
Save files locally via the share menu

    Kotlin
281

11

  2. VidyaMusicVidyaMusicPublic
    
[REWRITE] [Compose] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Kotlin
  3. vidya_musicvidya_musicPublic archive
    
[DEPRECATED] [Flutter] Player for the Vidya Intarweb Playlist (aka VIP Aersia)

    Dart
11

1

  4. bign-handheld-thumbnailerbign-handheld-thumbnailerPublic
    
Thumbnailer for Nintendo handheld game consoles (DS and 3DS) roms and homebrew

    Rust
25

2

  5. gnome-shell-extension-default-workspacegnome-shell-extension-default-workspacePublic
    
A gnome-shell extension that switches to the specified workspace on login.

    JavaScript
5

2

  6.  My personal Picard naming script, ... My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    1
    title: MateusRodCosta's Picard Naming Script
    2
    description: |
    3
     My personal Picard naming script, focuses mainly on soundtracks but has decent support for non-soundtrack albums. Includes very good multi-disc support.
    4
     AI usage disclaimer: this script implements Gemini suggestions to better achieve its goal and valid the script logic.
    5
    author: Mateus Rodrigues Costa (MateusRodCosta)