Peekly

Peekly is a near-invisible developer inspector that turns any web page into an interactive component map. How it works Hold the x key and hover any element. Peekly highlights the React component under your cursor and displays a contextual tooltip with detailed information, organized into tabs (Comp / DOM / CSS / A11y). The tooltip is sticky: when you release the x key, it stays on screen so you can interact with it. You can dismiss it at any time by clicking outside or pressing Esc. If you click while holding x, a full floating panel opens, giving you deeper access to the component and its environment. What you get in the panel - Source file access — one-click “Open in VS Code / Cursor / WebStorm / Sublime” - Live re-render counter to track component updates - Parent / children navigation via clickable chips (no need to move the mouse) - Props inspection with smart serialization - Computed styles for precise UI debugging - Tailwind / UnoCSS breakdown, grouped by variant - Accessibility audit (alt, aria-label, WCAG contrast) - Hints for dangerouslySetInnerHTML and oversized classNames - Owner chain to understand component hierarchy - Network inspector Press y to toggle a draggable panel that captures every fetch and XHR request on the page in real time. This includes: - Filtering by method, status, or search - Full inspection of headers and request/response bodies - Automatic TypeScript interface generation - GraphQL analysis - Call stack tracing for each request - Detection of N+1 patterns - Design principles Peekly is built around speed and minimal friction: - Uses plain letter keys → reachable with one hand - Avoids conflicts with OS/browser shortcuts (Option, Shift, Ctrl) - Never captures input while you're typing in a form field - Runtime behavior - Automatically enabled on localhost - Panels are fully draggable - Works seamlessly inside iframes - Hardened against malicious sites - Uses whitelisted editor protocols only - No network egress whatsoever - Open source Peekly is free, MIT-licensed, and fully open source: https://github.com/rosoam/peekly Peekly is built with strict privacy guarantees: Zero tracking Zero external requests Settings stored locally via chrome.storage More details: https://github.com/rosoam/peekly/blob/main/PRIVACY.md