All-in-one QA toolkit for web developers: inspect CSS, mock APIs, format JSON, pick colors, switch user agents, and more.
Users
24
+4 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#141K
#117K among extensions
Version
1.2.0
updated 2 Sep 2026
Users
monthly, 5 months
Latest, 16 Oct 2026:24 usersMove the mouse over the chart for any month
Ratings count
monthly, 5 months
Latest, 16 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About QA Toolkit
QA Toolkit is an all-in-one browser extension built for QA engineers and web developers who need fast, reliable tools without switching between apps or DevTools tabs.
Tools included:
π¨ Color Picker
Pick any color from the page using the native EyeDropper API. Displays HEX, RGB, and HSL values instantly. Keeps a history of your last 10 picks.
π CSS Inspector
Click any element on the page to get its optimized CSS selector and full selector path, plus relative and absolute XPath. Ready to copy in one click.
π Ruler
Overlay a pixel ruler on any page. Measure distances between elements, track cursor coordinates, and see nearest-element guide lines β all in real time.
π Lorem Ipsum
Generate placeholder text of any length directly in the extension popup β no third-party sites required.
πΌοΈ Lorem img
Generate test placeholder images of any size and style directly in the popup β no external services or uploads needed. Choose from size presets (favicons, avatars, social cards, banners, edge cases like 1Γ1 and max dimensions) or set a custom width and height. Pick from 6 background types (solid, gradient, checkerboard, noise, stripes, grid), set labels with dimensions or custom text, and export as PNG, JPEG, WebP, or SVG. Unique feature: embed EXIF orientation tags (1β8) into JPEG to test auto-rotate handling in file upload forms.
π Redirect Checker
Trace the full redirect chain of any URL step by step β see every hop, status code, and final destination without leaving the browser.
ποΈ Storage Inspector
View and edit localStorage, sessionStorage, and cookies for the active tab β including HttpOnly cookies, which page JavaScript can't touch. Add, edit, and delete values directly, exactly like Chrome DevTools.
π΅οΈ User Agent Switcher
Spoof your browser's User Agent per tab using session rules. Test how your site responds to different devices and browsers without restarting.
π¦ Mock Server
Intercept any network request and return a custom JSON response. Define your own status code, headers, and body β no backend needed.
{ } JSON Formatter
Paste or capture raw JSON and get it formatted with syntax highlighting. Supports multiple themes (Monokai, Nord, One Dark, Spectrum, GitHub).
πΌοΈ OG Inspector
Inspect Open Graph and Twitter Card meta tags on any page. Preview exactly how your link will look when shared on Twitter/X, Facebook, LinkedIn, Telegram, and Discord.
π iFrame Inspector
List all iFrames on the current page with their source URLs, dimensions, and sandbox attributes. Spot hidden iFrames instantly.
π¨ Page Painter
Draw, highlight, and annotate directly on any webpage. Useful for visual bug reports and quick UI mockups during reviews.
βΏ Accessibility Checker
Run a real WCAG audit powered by axe-core, the industry-standard accessibility engine β entirely local, right from your browser. Get detailed violation reports, an accessibility tree, real keyboard-focus testing, color contrast analysis, audit history and comparisons, and exportable reports (JSON/CSV/HTML) β all in a dedicated side panel.
π Decoder
Decode and encode URL parameters, HTML entities, Base64, Unicode escapes, and JSON β plus decode JWT tokens (header, payload, and expiry, without touching the signature). Auto-detects the format, or pick one manually. Grab a value straight from any element on the page with one click. Runs entirely locally β nothing is ever sent anywhere.