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CSS Insight

CSS Insight - quick CSS inspection, analysis, editing and one-click copying on webpages. A practical tool for web developers.

View Chrome Web Store

Time on the storeAbout 1 to 3 yearsA rough range, not an exact date

Store users12As shown on the Chrome Web Store

Chrome Web Store rating5.0 / 51 rating on the Chrome Web Store

Last store update27 Aug 2026Version 1.20.1, 40 days ago

Inside the extension

CSS Insight developer product preview 1

Product image 1 of 4

Reviews

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Permissions & access

Access levelHigh

Can read and change every website you visit.

What it’s allowed to do, not what it actually does. Not a safety rating.

Permissions 5

Sensitive2

Read and change data on every website<all_urls>
See the address and title of every open tabtabs

Standard3

Save its own settingsstorage
Work on the tab you click it onactiveTab
Run its code on pages it can accessscripting

Members also see when a new version asks for new access.

Website access All

All websites

Extension ID: keejoflofbcbepjbbhnmiomgmjjihmnb
Package size: 558KiB
Manifest: Version 3

The maker

MarkAlexI has 10 listings on the store. Updates most of their listings often.

Listings: 10
Combined store users: ≈778
Store Featured: 1
Updated in the last 90 days: 6 of 10

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Combined users can count the same person more than once. See all 10 listings Developer website

Ext Watch AI

Should you build in this niche?

One research report for CSS Insight. Reports come with Plus, Pro and Max.

Takeaway & demandCited takeaway and search volumes
Traffic & domainPopularity rank, visits and authority
Money & pricingPlans and prices from the maker’s site
ReviewsComplaints and praise, quoted
Competitors & ranksRank against the closest listings
Build opportunityWhat to build and how to position it

Every number shows its source and date
Ready in a minute or two
Report and PDF yours for 30 days