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Professional Pixel-Perfect overlay image, ruler, and magnifier tools. for web developers, designers, agencies, QA, and freelancers LayerGuide is a professional image overlay, pixel measurement, and magnifier tool that helps you build pixel-perfect sites and fast QA. Perfect for web developers, designers, agencies, and freelancers comparing mockups to live pages. - Save 2+ hours per project - Spot discrepancies fast and reduce errors - Reduce client feedback by 90% and deliver professional results - Catch tiny UI flaws agencies miss, ensuring client-ready perfection Image Overlay - Upload images locally (PNG, JPEG, GIF, WebP, SVG) with complete control - Adjust opacity, scale, rotate - Position with pixel precision using X/Y controls or drag - One-click centering and axis locking for constrained movement - Visibility toggle and color inversion for perfect contrast Ruler Tool - Create unlimited measurement rulers with drag-and-drop precision - Multi-color rulers - Custom opacity settings and corner resizing capabilities - Right-click removal and dynamic guidelines that follow cursor - Live pixel measurements with resize handles Magnifier - Real-time zoom up to 10x with adjustable magnifier size - Hardware-accelerated rendering for smooth performance - Smart positioning to avoid interface overlap - Instant zoom level indicators and scroll wheel controls Workflow Features - Automatic per-page memory saves all overlays and rulers for each page - Complete settings backup/export as JSON Control Panel - Minimize/Expand panel - Intuitive draggable interface with keyboard shortcuts (ESC to exit modes) - Grouped controls with visual dividers for better organization Perfect For: - Web Developers - QA testing and mockup implementation - UI/UX Designers - Design-to-code verification - Digital Agencies - Client project delivery and quality control - Freelancers - Professional tool that saves billable hours - QA Teams - Cross-browser testing and responsive validation Free vs Pro: FREE VERSION - Full Professional Features: - Complete image overlay with positioning, scaling, rotation, and color inversion - Multi-color rulers with resize and positioning (up to 2) - Real-time magnifier up to 1.5x zoom - Per-page memory and thumbnail history - Professional control panel with shortcuts PRO VERSION ($29.99/year or $89.99 lifetime): - Unlimited rulers with custom colors and opacity - 10x magnifier zoom with adjustable size (150px-750px) - Settings backup/restore for team collaboration - Default auto-lock axes for faster workflow - 3-device license with easy switching 14-day money-back guarantee Start free with full professional features - upgrade for unlimited power and team collaboration!
Reddit Pixel Helper
The Reddit Pixel Helper is a tool to QA your pixel implementation. While browsing any site, the extension badge will show the number of Reddit Pixel events firing on a page. Open the extension on any page with the pixel implemented to see which events are actively firing, identify any errors in their configuration, and get recommendations for fixing errors. Check out our Help Center for more info: https://advertising.reddithelp.com/en/categories/measurement/reddit-pixel-helper By using the Reddit Pixel Helper you agree to the Reddit Advertising Platform Terms: https://advertising.reddithelp.com/en/categories/policy-guidelines/advertising-terms-ads-platform
Pixel Perfect Pro
The Pixel Perfect Pro Extension for Browsers is an invaluable tool for web designers and developers. With this extension, users can easily and accurately overlay their web designs on the existing web page, making sure that all the planned design elements and styling match up perfectly. The extension is compatible with all major browsers, so no matter what browser a user is using, they can be sure that their designs will look perfect. Using this extension is easy and straightforward. First, open the page you want to work with and then open the Pixel Perfect Pro Extension. You can then choose the design you want to overlay and the extension will automatically display it over the web page. You can position the design elements, adjust the size and check that all the planned elements are in place. It offers a wide range of features: 1. unlimited layers, 2. inversion and scaling, 3. horizontal and vertical alignments, 4. splitting images for each website, 5. support for large images up to 50 MB, 6. drag and drop file uploads, 7. keyboard arrow and mouse wheel support when focused on an input, 8. minimal space needed for development panels, 9. a ruler for accurate measurements. With Pixel Perfect Pro, you can save time and energy creating flawless websites with perfect pixel-level accuracy. Overall, the Pixel Perfect Extension for Browsers is an incredibly useful tool for web designers and developers who want to quickly and accurately check that their designs match up with the existing web page.
PixGrid Ruler
Your Pixel-Perfect Ruler for Measuring Web Elements Introducing PixGrid: Your Ultimate Pixel-Perfect Ruler for Web Element Measurements Discover PixGrid, the browser extension designed to enhance your web browsing experience with pinpoint precision. Whether you're a designer, developer, or simply someone who values accuracy, PixGrid is your go-to tool for measuring web elements effortlessly. Features: 📏 Ruler Tool: Get pixel-perfect measurements with our intuitive ruler feature. Say goodbye to estimation and hello to precision. 🔍 Measure Web Elements: Seamlessly measure elements on web pages with a ruler tool to ensure your designs align perfectly and your layouts are on point. 🖱️ Free Selection: Enjoy the freedom to select with the ruler any element on a webpage and instantly measure its size with ease. ⌨️ Keyboard Shortcuts: Navigate through measurements swiftly using convenient keyboard shortcuts, streamlining your workflow. 🎨 Designers: Perfect for ensuring your designs are pixel-perfect and align seamlessly with your vision. 💻 Developers: Streamline your coding process by accurately measuring and placing web elements in the right spots. 📐 Professionals: Architects, photographers, and other professionals can rely on PixGrid for precise measurements on web content. 📚 Students: Ideal for learning about web design and development, giving you the tools to practice and grow. Elevate your browsing experience today with PixGrid – where precision meets simplicity. Try it now and experience the future of accurate web element measurement.
Measuremate — Pixel Ruler for Web Design
Measure distances, inspect the box model, drop guides on any live page. A pixel ruler for the web — no DevTools. Measure distances between any elements on any website. Pixel ruler, CSS inspector, and alignment guides — everything you need for pixel-perfect design handoff, right in your browser. Measuremate is a measuring tool built for frontend developers, web designers, and QA engineers who need precise pixel measurements without leaving the browser. Lightweight, private, and fast. 🔍 INSPECTOR MODE — Click any element to inspect it. See dimensions, distances to neighboring elements, and full CSS details. Hover to preview before selecting. 📐 GUIDES MODE — Place vertical and horizontal ruler guides anywhere on the page. Snap to element edges, measure between guides, and verify alignment like in Figma. Switch between modes with a single keystroke. ━━━━━━━━━━━━━━━━━━━━━━━━ WHAT YOU CAN DO ━━━━━━━━━━━━━━━━━━━━━━━━ 📏 MEASURE DISTANCES between any two elements — spacing, gaps, padding, margins. On-page dimension lines show exact pixel values. 🎯 INSPECT THE CSS BOX MODEL with visual breakdown of content, padding, border, and margin (including negative margins). 🔬 VIEW DETAILED CSS by category — Layout (display, position, flex, grid, z-index), Text (font, color, line-height, letter-spacing), and Attributes. 🌳 NAVIGATE THE DOM TREE — browse from root to any element, hover to preview, click to inspect. 📐 DROP VERTICAL OR HORIZONTAL GUIDES on any page with a single keystroke. Use arrow keys for 1px precision, Shift+arrows for 10px jumps. 🧲 SNAP TO ELEMENTS — guides and cursor automatically snap to element edges and centers. Cmd+Shift+M (Mac) / Ctrl+Shift+M (Win) — Toggle Measuremate on/off 1 — Switch to Inspector mode 2 — Switch to Guides mode M — Show/hide the control panel V — Drop a vertical guide at cursor H — Drop a horizontal guide at cursor S — Toggle snap-to-alignment Q — Clear all guides Arrow keys — Move cursor/guides 1px (Shift for 10px) Esc — Clear selection ━━━━━━━━━━━━━━━━━━━━━━━━ WHO IT'S FOR ━━━━━━━━━━━━━━━━━━━━━━━━ • Frontend developers verifying pixel-perfect implementation against designs • Web designers checking spacing, alignment, and typography on live sites • QA engineers validating responsive layouts across breakpoints • Teams doing design handoff from Figma, Sketch, or other design tools • Anyone who needs a fast, clean ruler for the web ✓ Clean UI — does nothing until you activate it. No interference with the pages you browse. ✓ Lightweight — under 500 KiB, no bloat, no telemetry. ✓ Privacy-first — zero tracking, zero data collection. ✓ Works on any website, including SPAs and iframes. ✓ Figma-like distance measurements you already know how to read. ✓ Keyboard-first workflow for power users. 1. Click the Measuremate icon in your toolbar (or press Cmd/Ctrl+Shift+M) to activate 2. Hover over any element to preview its dimensions 3. Click to select — see distances to nearby elements appear on the page 4. Open the Main Panel with M to see full CSS, box model, and DOM tree 5. Press 2 to switch to Guides mode and drop alignment rulers ━━━━━━━━━━━━━━━━━━━━━━━━ FREE AND PRO ━━━━━━━━━━━━━━━━━━━━━━━━ We ship updates regularly. Feature requests and bug reports are always welcome.
