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Products/Developer Tools/PeekCSSVC Report ↗
PeekCSS

PeekCSS

PeekCSS provides a lightweight CSS inspector directly inside Firefox, letting developers view and edit styles without leaving the browser

Developer Tools·Launched Aug 2026·0 upvotes·peekcss.com
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ALIVEverified Aug 24, 2026 · HTTP 200
CohortClass of 2026

What it is

PeekCSS provides a lightweight CSS inspector directly inside Firefox, letting developers view and edit styles without leaving the browser. Built from the ground up for Firefox, it offers a seamless experience distinct from Chrome-based tools.

HTTP liveness

2 probes since Aug 17
Aug 17Aug 24
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)

Observed events

probes · press · GitHub
  1. Aug 17, 2026
    First probe — live
    Alive · 200 OK

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Vitals
Upvotes
—
Press
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Tags
Pulse Indexobserved activity
2 probes0 pressGitHub –Tranco –

Not enough observed signals for a Pulse Index (needs 2+ signal families).

Cohort survival · Class of 2026weekly

3,100 products launched in 2026 · 100% still active

3,100 active0 sunset
Still active
100%
Median lifespan
4.9y