Skip to content

SemanticDiff.com

GitHub App

SemanticDiff.com

GitHub App

SemanticDiff provides a programming language aware diff for GitHub pull requests to help you review code changes faster.

Pull Request Viewer

You can try it out with any public pull request before installing the app.

Features

SemanticDiff provides an alternative diff viewer that:

  • hides style-only changes or reformattings
  • detects moved code
  • highlights changes inside moved code
  • detects refactorings such as renames

Every time a new pull request is opened, the App adds a comment with a URL to the corresponding pull request in SemanticDiff.

Hides Style-Only Changes / Reformattings

Changes that do not have an effect on the program flow, like optional line breaks or commas, are not shown as change.

Style Changes

The blue marker in the center shows you how the lines in the old and new code correspond.

Moved Code Detection

SemanticDiff detects when code was moved within a file. The original and new code block are shown side-by-side to help you spot any changes that were introduced during the move.

Moved Code

Refactoring Detection

Renamed functions/variables and all their occurrences are highlighted using the same color.

Renames

This feature is currently under development and will soon be extended to more complex refactorings.

Supported Programming Languages

SemanticDiff is a programming language aware diff and therefore needs to be able to understand your code. This requires your code to be syntactically correct and written in one of the following languages or data exchange formats:

  • C#
  • CSS / SCSS
  • Go
  • Java
  • JavaScript / JSX
  • JSON
  • PO (gettext)
  • Python
  • TypeScript / TSX

Bugs / Feature Requests

Did you find a bug or have a great idea how to improve SemanticDiff? Let us know in our issue tracker.


SemanticDiff is developed by Sysmagine GmbH based in Heidelberg, Germany (Impressum).

Developer

SemanticDiff.com is provided by a third-party and is governed by separate terms of service, privacy policy, and support documentation.

Report abuse
, '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" + '
GitHub Apps - SemanticDiff.com · GitHub
Skip to content

SemanticDiff.com

GitHub App

SemanticDiff.com

GitHub App

SemanticDiff provides a programming language aware diff for GitHub pull requests to help you review code changes faster.

Pull Request Viewer

You can try it out with any public pull request before installing the app.

Features

SemanticDiff provides an alternative diff viewer that:

  • hides style-only changes or reformattings
  • detects moved code
  • highlights changes inside moved code
  • detects refactorings such as renames

Every time a new pull request is opened, the App adds a comment with a URL to the corresponding pull request in SemanticDiff.

Hides Style-Only Changes / Reformattings

Changes that do not have an effect on the program flow, like optional line breaks or commas, are not shown as change.

Style Changes

The blue marker in the center shows you how the lines in the old and new code correspond.

Moved Code Detection

SemanticDiff detects when code was moved within a file. The original and new code block are shown side-by-side to help you spot any changes that were introduced during the move.

Moved Code

Refactoring Detection

Renamed functions/variables and all their occurrences are highlighted using the same color.

Renames

This feature is currently under development and will soon be extended to more complex refactorings.

Supported Programming Languages

SemanticDiff is a programming language aware diff and therefore needs to be able to understand your code. This requires your code to be syntactically correct and written in one of the following languages or data exchange formats:

  • C#
  • CSS / SCSS
  • Go
  • Java
  • JavaScript / JSX
  • JSON
  • PO (gettext)
  • Python
  • TypeScript / TSX

Bugs / Feature Requests

Did you find a bug or have a great idea how to improve SemanticDiff? Let us know in our issue tracker.


SemanticDiff is developed by Sysmagine GmbH based in Heidelberg, Germany (Impressum).

Developer

SemanticDiff.com is provided by a third-party and is governed by separate terms of service, privacy policy, and support documentation.

Report abuse
, '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('^' + ".*" + ' GitHub Apps - SemanticDiff.com · GitHub
Skip to content

SemanticDiff.com

GitHub App

SemanticDiff.com

GitHub App

SemanticDiff provides a programming language aware diff for GitHub pull requests to help you review code changes faster.

Pull Request Viewer

You can try it out with any public pull request before installing the app.

Features

SemanticDiff provides an alternative diff viewer that:

  • hides style-only changes or reformattings
  • detects moved code
  • highlights changes inside moved code
  • detects refactorings such as renames

Every time a new pull request is opened, the App adds a comment with a URL to the corresponding pull request in SemanticDiff.

Hides Style-Only Changes / Reformattings

Changes that do not have an effect on the program flow, like optional line breaks or commas, are not shown as change.

Style Changes

The blue marker in the center shows you how the lines in the old and new code correspond.

Moved Code Detection

SemanticDiff detects when code was moved within a file. The original and new code block are shown side-by-side to help you spot any changes that were introduced during the move.

Moved Code

Refactoring Detection

Renamed functions/variables and all their occurrences are highlighted using the same color.

Renames

This feature is currently under development and will soon be extended to more complex refactorings.

Supported Programming Languages

SemanticDiff is a programming language aware diff and therefore needs to be able to understand your code. This requires your code to be syntactically correct and written in one of the following languages or data exchange formats:

  • C#
  • CSS / SCSS
  • Go
  • Java
  • JavaScript / JSX
  • JSON
  • PO (gettext)
  • Python
  • TypeScript / TSX

Bugs / Feature Requests

Did you find a bug or have a great idea how to improve SemanticDiff? Let us know in our issue tracker.


SemanticDiff is developed by Sysmagine GmbH based in Heidelberg, Germany (Impressum).

Developer

SemanticDiff.com is provided by a third-party and is governed by separate terms of service, privacy policy, and support documentation.

Report abuse
, '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('^' + ".*" + ' GitHub Apps - SemanticDiff.com · GitHub
Skip to content

SemanticDiff.com

GitHub App

SemanticDiff.com

GitHub App

SemanticDiff provides a programming language aware diff for GitHub pull requests to help you review code changes faster.

Pull Request Viewer

You can try it out with any public pull request before installing the app.

Features

SemanticDiff provides an alternative diff viewer that:

  • hides style-only changes or reformattings
  • detects moved code
  • highlights changes inside moved code
  • detects refactorings such as renames

Every time a new pull request is opened, the App adds a comment with a URL to the corresponding pull request in SemanticDiff.

Hides Style-Only Changes / Reformattings

Changes that do not have an effect on the program flow, like optional line breaks or commas, are not shown as change.

Style Changes

The blue marker in the center shows you how the lines in the old and new code correspond.

Moved Code Detection

SemanticDiff detects when code was moved within a file. The original and new code block are shown side-by-side to help you spot any changes that were introduced during the move.

Moved Code

Refactoring Detection

Renamed functions/variables and all their occurrences are highlighted using the same color.

Renames

This feature is currently under development and will soon be extended to more complex refactorings.

Supported Programming Languages

SemanticDiff is a programming language aware diff and therefore needs to be able to understand your code. This requires your code to be syntactically correct and written in one of the following languages or data exchange formats:

  • C#
  • CSS / SCSS
  • Go
  • Java
  • JavaScript / JSX
  • JSON
  • PO (gettext)
  • Python
  • TypeScript / TSX

Bugs / Feature Requests

Did you find a bug or have a great idea how to improve SemanticDiff? Let us know in our issue tracker.


SemanticDiff is developed by Sysmagine GmbH based in Heidelberg, Germany (Impressum).

Developer

SemanticDiff.com is provided by a third-party and is governed by separate terms of service, privacy policy, and support documentation.

Report abuse
, '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" + ' GitHub Apps - SemanticDiff.com · GitHub
Skip to content

SemanticDiff.com

GitHub App

SemanticDiff.com

GitHub App

SemanticDiff provides a programming language aware diff for GitHub pull requests to help you review code changes faster.

Pull Request Viewer

You can try it out with any public pull request before installing the app.

Features

SemanticDiff provides an alternative diff viewer that:

  • hides style-only changes or reformattings
  • detects moved code
  • highlights changes inside moved code
  • detects refactorings such as renames

Every time a new pull request is opened, the App adds a comment with a URL to the corresponding pull request in SemanticDiff.

Hides Style-Only Changes / Reformattings

Changes that do not have an effect on the program flow, like optional line breaks or commas, are not shown as change.

Style Changes

The blue marker in the center shows you how the lines in the old and new code correspond.

Moved Code Detection

SemanticDiff detects when code was moved within a file. The original and new code block are shown side-by-side to help you spot any changes that were introduced during the move.

Moved Code

Refactoring Detection

Renamed functions/variables and all their occurrences are highlighted using the same color.

Renames

This feature is currently under development and will soon be extended to more complex refactorings.

Supported Programming Languages

SemanticDiff is a programming language aware diff and therefore needs to be able to understand your code. This requires your code to be syntactically correct and written in one of the following languages or data exchange formats:

  • C#
  • CSS / SCSS
  • Go
  • Java
  • JavaScript / JSX
  • JSON
  • PO (gettext)
  • Python
  • TypeScript / TSX

Bugs / Feature Requests

Did you find a bug or have a great idea how to improve SemanticDiff? Let us know in our issue tracker.


SemanticDiff is developed by Sysmagine GmbH based in Heidelberg, Germany (Impressum).

Developer

SemanticDiff.com is provided by a third-party and is governed by separate terms of service, privacy policy, and support documentation.

Report abuse
, '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('^' + ".*" + ' GitHub Apps - SemanticDiff.com · GitHub
Skip to content

SemanticDiff.com

GitHub App

SemanticDiff.com

GitHub App

SemanticDiff provides a programming language aware diff for GitHub pull requests to help you review code changes faster.

Pull Request Viewer

You can try it out with any public pull request before installing the app.

Features

SemanticDiff provides an alternative diff viewer that:

  • hides style-only changes or reformattings
  • detects moved code
  • highlights changes inside moved code
  • detects refactorings such as renames

Every time a new pull request is opened, the App adds a comment with a URL to the corresponding pull request in SemanticDiff.

Hides Style-Only Changes / Reformattings

Changes that do not have an effect on the program flow, like optional line breaks or commas, are not shown as change.

Style Changes

The blue marker in the center shows you how the lines in the old and new code correspond.

Moved Code Detection

SemanticDiff detects when code was moved within a file. The original and new code block are shown side-by-side to help you spot any changes that were introduced during the move.

Moved Code

Refactoring Detection

Renamed functions/variables and all their occurrences are highlighted using the same color.

Renames

This feature is currently under development and will soon be extended to more complex refactorings.

Supported Programming Languages

SemanticDiff is a programming language aware diff and therefore needs to be able to understand your code. This requires your code to be syntactically correct and written in one of the following languages or data exchange formats:

  • C#
  • CSS / SCSS
  • Go
  • Java
  • JavaScript / JSX
  • JSON
  • PO (gettext)
  • Python
  • TypeScript / TSX

Bugs / Feature Requests

Did you find a bug or have a great idea how to improve SemanticDiff? Let us know in our issue tracker.


SemanticDiff is developed by Sysmagine GmbH based in Heidelberg, Germany (Impressum).

Developer

SemanticDiff.com is provided by a third-party and is governed by separate terms of service, privacy policy, and support documentation.

Report abuse
, '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('^' + ".*" + ' GitHub Apps - SemanticDiff.com · GitHub
Skip to content

SemanticDiff.com

GitHub App

SemanticDiff.com

GitHub App

SemanticDiff provides a programming language aware diff for GitHub pull requests to help you review code changes faster.

Pull Request Viewer

You can try it out with any public pull request before installing the app.

Features

SemanticDiff provides an alternative diff viewer that:

  • hides style-only changes or reformattings
  • detects moved code
  • highlights changes inside moved code
  • detects refactorings such as renames

Every time a new pull request is opened, the App adds a comment with a URL to the corresponding pull request in SemanticDiff.

Hides Style-Only Changes / Reformattings

Changes that do not have an effect on the program flow, like optional line breaks or commas, are not shown as change.

Style Changes

The blue marker in the center shows you how the lines in the old and new code correspond.

Moved Code Detection

SemanticDiff detects when code was moved within a file. The original and new code block are shown side-by-side to help you spot any changes that were introduced during the move.

Moved Code

Refactoring Detection

Renamed functions/variables and all their occurrences are highlighted using the same color.

Renames

This feature is currently under development and will soon be extended to more complex refactorings.

Supported Programming Languages

SemanticDiff is a programming language aware diff and therefore needs to be able to understand your code. This requires your code to be syntactically correct and written in one of the following languages or data exchange formats:

  • C#
  • CSS / SCSS
  • Go
  • Java
  • JavaScript / JSX
  • JSON
  • PO (gettext)
  • Python
  • TypeScript / TSX

Bugs / Feature Requests

Did you find a bug or have a great idea how to improve SemanticDiff? Let us know in our issue tracker.


SemanticDiff is developed by Sysmagine GmbH based in Heidelberg, Germany (Impressum).

Developer

SemanticDiff.com is provided by a third-party and is governed by separate terms of service, privacy policy, and support documentation.

Report abuse
, '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); } })(); })(); GitHub Apps - SemanticDiff.com · GitHub
Skip to content

SemanticDiff.com

GitHub App

SemanticDiff.com

GitHub App

SemanticDiff provides a programming language aware diff for GitHub pull requests to help you review code changes faster.

Pull Request Viewer

You can try it out with any public pull request before installing the app.

Features

SemanticDiff provides an alternative diff viewer that:

  • hides style-only changes or reformattings
  • detects moved code
  • highlights changes inside moved code
  • detects refactorings such as renames

Every time a new pull request is opened, the App adds a comment with a URL to the corresponding pull request in SemanticDiff.

Hides Style-Only Changes / Reformattings

Changes that do not have an effect on the program flow, like optional line breaks or commas, are not shown as change.

Style Changes

The blue marker in the center shows you how the lines in the old and new code correspond.

Moved Code Detection

SemanticDiff detects when code was moved within a file. The original and new code block are shown side-by-side to help you spot any changes that were introduced during the move.

Moved Code

Refactoring Detection

Renamed functions/variables and all their occurrences are highlighted using the same color.

Renames

This feature is currently under development and will soon be extended to more complex refactorings.

Supported Programming Languages

SemanticDiff is a programming language aware diff and therefore needs to be able to understand your code. This requires your code to be syntactically correct and written in one of the following languages or data exchange formats:

  • C#
  • CSS / SCSS
  • Go
  • Java
  • JavaScript / JSX
  • JSON
  • PO (gettext)
  • Python
  • TypeScript / TSX

Bugs / Feature Requests

Did you find a bug or have a great idea how to improve SemanticDiff? Let us know in our issue tracker.


SemanticDiff is developed by Sysmagine GmbH based in Heidelberg, Germany (Impressum).

Developer

SemanticDiff.com is provided by a third-party and is governed by separate terms of service, privacy policy, and support documentation.

Report abuse