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RedLight

RedLight is a lightweight Windows utility that applies a customizable full-screen color filter. It is designed to help reduce eye strain or assist with accessibility.

Demo

Download

You can download the latest (RedLightForWindows.exe) from the Releases page.

Features

  • Full-Screen Filters: Apply various color matrices to the entire screen using the Windows Magnification API.
  • Filter Modes:
    • Red: Reduces blue light, ideal for night usage.
    • Grayscale: Converts the screen to black and white.
    • Color Blindness Simulations: Protanopia (Red/Green), Deuteranopia (Green/Red), and Tritanopia (Blue/Yellow).
  • Adjustable Intensity: Fine-tune the strength of the filter using a slider.
  • Tray Popup: Lives in the system tray; click the icon to toggle a popup with all controls.

Requirements

  • Windows 10 or Windows 11

Usage

  1. Run the application. It starts in the system tray.
  2. Click the tray icon to open the popup.
  3. Check Enable Fullscreen Filter to start.
  4. Select a Filter Type from the dropdown.
  5. Adjust the Intensity slider to control the effect strength.
  6. Click outside the popup to dismiss it. Click Quit to exit.

Stack

  • Framework: .NET 10 (WPF & Windows Forms components)
  • API: Windows Magnification API (MagSetFullscreenColorEffect)

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windows utility with blue light filter and other accessibility features

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n 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;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
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RedLight

RedLight is a lightweight Windows utility that applies a customizable full-screen color filter. It is designed to help reduce eye strain or assist with accessibility.

Demo

Download

You can download the latest (RedLightForWindows.exe) from the Releases page.

Features

  • Full-Screen Filters: Apply various color matrices to the entire screen using the Windows Magnification API.
  • Filter Modes:
    • Red: Reduces blue light, ideal for night usage.
    • Grayscale: Converts the screen to black and white.
    • Color Blindness Simulations: Protanopia (Red/Green), Deuteranopia (Green/Red), and Tritanopia (Blue/Yellow).
  • Adjustable Intensity: Fine-tune the strength of the filter using a slider.
  • Tray Popup: Lives in the system tray; click the icon to toggle a popup with all controls.

Requirements

  • Windows 10 or Windows 11

Usage

  1. Run the application. It starts in the system tray.
  2. Click the tray icon to open the popup.
  3. Check Enable Fullscreen Filter to start.
  4. Select a Filter Type from the dropdown.
  5. Adjust the Intensity slider to control the effect strength.
  6. Click outside the popup to dismiss it. Click Quit to exit.

Stack

  • Framework: .NET 10 (WPF & Windows Forms components)
  • API: Windows Magnification API (MagSetFullscreenColorEffect)

About

windows utility with blue light filter and other accessibility features

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

RedLight is a lightweight Windows utility that applies a customizable full-screen color filter. It is designed to help reduce eye strain or assist with accessibility.

Demo

Download

You can download the latest (RedLightForWindows.exe) from the Releases page.

Features

  • Full-Screen Filters: Apply various color matrices to the entire screen using the Windows Magnification API.
  • Filter Modes:
    • Red: Reduces blue light, ideal for night usage.
    • Grayscale: Converts the screen to black and white.
    • Color Blindness Simulations: Protanopia (Red/Green), Deuteranopia (Green/Red), and Tritanopia (Blue/Yellow).
  • Adjustable Intensity: Fine-tune the strength of the filter using a slider.
  • Tray Popup: Lives in the system tray; click the icon to toggle a popup with all controls.

Requirements

  • Windows 10 or Windows 11

Usage

  1. Run the application. It starts in the system tray.
  2. Click the tray icon to open the popup.
  3. Check Enable Fullscreen Filter to start.
  4. Select a Filter Type from the dropdown.
  5. Adjust the Intensity slider to control the effect strength.
  6. Click outside the popup to dismiss it. Click Quit to exit.

Stack

  • Framework: .NET 10 (WPF & Windows Forms components)
  • API: Windows Magnification API (MagSetFullscreenColorEffect)

About

windows utility with blue light filter and other accessibility features

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

RedLight is a lightweight Windows utility that applies a customizable full-screen color filter. It is designed to help reduce eye strain or assist with accessibility.

Demo

Download

You can download the latest (RedLightForWindows.exe) from the Releases page.

Features

  • Full-Screen Filters: Apply various color matrices to the entire screen using the Windows Magnification API.
  • Filter Modes:
    • Red: Reduces blue light, ideal for night usage.
    • Grayscale: Converts the screen to black and white.
    • Color Blindness Simulations: Protanopia (Red/Green), Deuteranopia (Green/Red), and Tritanopia (Blue/Yellow).
  • Adjustable Intensity: Fine-tune the strength of the filter using a slider.
  • Tray Popup: Lives in the system tray; click the icon to toggle a popup with all controls.

Requirements

  • Windows 10 or Windows 11

Usage

  1. Run the application. It starts in the system tray.
  2. Click the tray icon to open the popup.
  3. Check Enable Fullscreen Filter to start.
  4. Select a Filter Type from the dropdown.
  5. Adjust the Intensity slider to control the effect strength.
  6. Click outside the popup to dismiss it. Click Quit to exit.

Stack

  • Framework: .NET 10 (WPF & Windows Forms components)
  • API: Windows Magnification API (MagSetFullscreenColorEffect)

About

windows utility with blue light filter and other accessibility features

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1 star

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0 watching

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

RedLight is a lightweight Windows utility that applies a customizable full-screen color filter. It is designed to help reduce eye strain or assist with accessibility.

Demo

Download

You can download the latest (RedLightForWindows.exe) from the Releases page.

Features

  • Full-Screen Filters: Apply various color matrices to the entire screen using the Windows Magnification API.
  • Filter Modes:
    • Red: Reduces blue light, ideal for night usage.
    • Grayscale: Converts the screen to black and white.
    • Color Blindness Simulations: Protanopia (Red/Green), Deuteranopia (Green/Red), and Tritanopia (Blue/Yellow).
  • Adjustable Intensity: Fine-tune the strength of the filter using a slider.
  • Tray Popup: Lives in the system tray; click the icon to toggle a popup with all controls.

Requirements

  • Windows 10 or Windows 11

Usage

  1. Run the application. It starts in the system tray.
  2. Click the tray icon to open the popup.
  3. Check Enable Fullscreen Filter to start.
  4. Select a Filter Type from the dropdown.
  5. Adjust the Intensity slider to control the effect strength.
  6. Click outside the popup to dismiss it. Click Quit to exit.

Stack

  • Framework: .NET 10 (WPF & Windows Forms components)
  • API: Windows Magnification API (MagSetFullscreenColorEffect)

About

windows utility with blue light filter and other accessibility features

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1 star

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0 watching

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Contributors

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

RedLight is a lightweight Windows utility that applies a customizable full-screen color filter. It is designed to help reduce eye strain or assist with accessibility.

Demo

Download

You can download the latest (RedLightForWindows.exe) from the Releases page.

Features

  • Full-Screen Filters: Apply various color matrices to the entire screen using the Windows Magnification API.
  • Filter Modes:
    • Red: Reduces blue light, ideal for night usage.
    • Grayscale: Converts the screen to black and white.
    • Color Blindness Simulations: Protanopia (Red/Green), Deuteranopia (Green/Red), and Tritanopia (Blue/Yellow).
  • Adjustable Intensity: Fine-tune the strength of the filter using a slider.
  • Tray Popup: Lives in the system tray; click the icon to toggle a popup with all controls.

Requirements

  • Windows 10 or Windows 11

Usage

  1. Run the application. It starts in the system tray.
  2. Click the tray icon to open the popup.
  3. Check Enable Fullscreen Filter to start.
  4. Select a Filter Type from the dropdown.
  5. Adjust the Intensity slider to control the effect strength.
  6. Click outside the popup to dismiss it. Click Quit to exit.

Stack

  • Framework: .NET 10 (WPF & Windows Forms components)
  • API: Windows Magnification API (MagSetFullscreenColorEffect)

About

windows utility with blue light filter and other accessibility features

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Stars

1 star

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0 watching

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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers"); } } catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + '
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RedLight

RedLight is a lightweight Windows utility that applies a customizable full-screen color filter. It is designed to help reduce eye strain or assist with accessibility.

Demo

Download

You can download the latest (RedLightForWindows.exe) from the Releases page.

Features

  • Full-Screen Filters: Apply various color matrices to the entire screen using the Windows Magnification API.
  • Filter Modes:
    • Red: Reduces blue light, ideal for night usage.
    • Grayscale: Converts the screen to black and white.
    • Color Blindness Simulations: Protanopia (Red/Green), Deuteranopia (Green/Red), and Tritanopia (Blue/Yellow).
  • Adjustable Intensity: Fine-tune the strength of the filter using a slider.
  • Tray Popup: Lives in the system tray; click the icon to toggle a popup with all controls.

Requirements

  • Windows 10 or Windows 11

Usage

  1. Run the application. It starts in the system tray.
  2. Click the tray icon to open the popup.
  3. Check Enable Fullscreen Filter to start.
  4. Select a Filter Type from the dropdown.
  5. Adjust the Intensity slider to control the effect strength.
  6. Click outside the popup to dismiss it. Click Quit to exit.

Stack

  • Framework: .NET 10 (WPF & Windows Forms components)
  • API: Windows Magnification API (MagSetFullscreenColorEffect)

About

windows utility with blue light filter and other accessibility features

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Resources

Stars

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

RedLight is a lightweight Windows utility that applies a customizable full-screen color filter. It is designed to help reduce eye strain or assist with accessibility.

Demo

Download

You can download the latest (RedLightForWindows.exe) from the Releases page.

Features

  • Full-Screen Filters: Apply various color matrices to the entire screen using the Windows Magnification API.
  • Filter Modes:
    • Red: Reduces blue light, ideal for night usage.
    • Grayscale: Converts the screen to black and white.
    • Color Blindness Simulations: Protanopia (Red/Green), Deuteranopia (Green/Red), and Tritanopia (Blue/Yellow).
  • Adjustable Intensity: Fine-tune the strength of the filter using a slider.
  • Tray Popup: Lives in the system tray; click the icon to toggle a popup with all controls.

Requirements

  • Windows 10 or Windows 11

Usage

  1. Run the application. It starts in the system tray.
  2. Click the tray icon to open the popup.
  3. Check Enable Fullscreen Filter to start.
  4. Select a Filter Type from the dropdown.
  5. Adjust the Intensity slider to control the effect strength.
  6. Click outside the popup to dismiss it. Click Quit to exit.

Stack

  • Framework: .NET 10 (WPF & Windows Forms components)
  • API: Windows Magnification API (MagSetFullscreenColorEffect)

About

windows utility with blue light filter and other accessibility features

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Resources

Stars

1 star

Watchers

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Releases

Contributors

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