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Chrome DevTools extensions

Focused lenses for everyday web debugging.

Focused Chrome DevTools extensions for everyday web debugging.

Install Cookie LensEvent Lens — Coming soon

Products

Two extensions, one design language. Pick the lens that fits the problem in front of you.

Cookie Lens

Inspect, edit, freeze, and audit browser cookies.

A popup and a DevTools panel for engineers debugging session, auth, consent, and tracking cookies.

  • Decode JWT, JSON, Base64 & key/value inline
  • Freeze cookies and switch named Profiles
  • Activity feed, Diff & a security Report
Open documentation
Latest (1.2.0)

Event Lens

In development

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. Currently in development — not yet on the Chrome Web Store.

  • 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.

01

Local-only

Cookie values and event payloads never leave the browser. No server calls, no telemetry on your data.

02

DevTools-native

Every tool ships as a Chrome DevTools panel — open it where you already debug, with the same shortcuts.

03

Focused, not bloated

Each Lens does one thing well. Small surface area, fast to learn, predictable to use.