Security headers checker with letter grade, severity levels, batch scan, site compare, fix snippets, and shareable report card.

Inspect CSS variables on any element. See resolution chains, color swatches, and copy name:value pairs from the Elements sidebar.

View, edit, search, and export localStorage and sessionStorage entries for any page.

Encode, decode, and format data instantly. Base64, JWT, URL, Unix timestamps, hashes, and JSON in one popup.

Inspect service worker registrations, view cached resources, simulate offline mode, and debug PWAs.

Find, highlight, and inspect Shadow DOM elements on any page. View tree structure, copy HTML, toggle visibility.

Save, tag, and search code snippets locally. Copy any snippet with one click. No accounts, no cloud — stays on device.

Simulate API rate limiting by intercepting fetch/XHR requests and returning configurable error responses.

Check color contrast ratios against WCAG standards on any webpage. Click any element to see if it passes AA or AAA.

See how well your resume matches any job listing on LinkedIn. Get your match score instantly.

Syntax-highlight .env files on GitHub with grouping, sensitive value detection, and copy buttons.

Captures console logs, warnings, and errors in the background — even when DevTools is closed.

See API calls as they happen. A clean, focused view of XHR and Fetch requests with formatted responses for developers.

Test, debug, and save regex patterns with real-time highlighting, group captures, and replace preview.

Track how long you spend reviewing GitHub pull requests. See cumulative weekly stats and effort estimates.

See the real cost of every meeting. Free live cost tracking plus optional Pro AI insights, CSV export, and 12-week trends.

Instantly decode salary figures on job boards. See hourly, monthly, biweekly, and annual equivalents inline.

Set a tab limit and stay focused. Gently blocks new tabs when you hit the cap, tracks your tab habits over time.