Local-only
Cookie values and event payloads never leave the browser. No server calls, no telemetry on your data.
Chrome DevTools extensions
Focused lenses for everyday web debugging.
Focused Chrome DevTools extensions for everyday web debugging.
Products
Two extensions, one design language. Pick the lens that fits the problem in front of you.
Cookie Lens
Inspect, edit, and audit browser cookies.
A focused DevTools panel for engineers debugging session, auth, consent, and tracking cookies.
- Smart value editor (JSON, URL-encoded, base64, JWT)
- Protected & mock cookies
- Cookie reports and Playwright export
Event Lens
A single timeline for every event your app emits.
Capture analytics calls, custom DOM events, postMessage traffic, and runtime event-bus traffic in one place.
- Ordered timeline with payload inspection
- Structural diff against previous events
- Filter, search, copy, export reproductions
How the Lens family works
Three principles every tool in the family follows.
DevTools-native
Every tool ships as a Chrome DevTools panel — open it where you already debug, with the same shortcuts.
Focused, not bloated
Each Lens does one thing well. Small surface area, fast to learn, predictable to use.