Extension Tracker

W3C Markup Validation Service for CSR pages

3,000 users Rated 3.67 from 3 ratings Last updated 2 Feb 2024

By 인스웨이브 시스템즈 Live in the Chrome Web Store kfjemflfclknofbklcnbnpjelkfhcomk Search Google ↗ Last checked 7 Nov 2026, 03:05 UTC

The listing

What the Chrome Web Store shows, as of the last check

W3C Validator for client side rendering pagesSummary from the listing
Developer
인스웨이브 시스템즈
Enhanced Safe Browsing
Trusted. What this means →
Category
Productivity › Developer Tools
First published
1 Feb 2024
Last updated
2 Feb 2024
Version
1.0
Size
13.36 KiB
Minimum Chrome
88
Languages
1 language

English

See Chrome Web Store page ↗ View its code or download CRX ↗
Users over time As shown on the Chrome Web Store
2.95K3K3.05KTracking began 27 Sep 202627 Sep4 Oct11 Oct18 Oct25 Oct1 Nov2026-09-27: 3,000 users2026-10-03: 3,000 users2026-10-10: 3,000 users2026-10-17: 3,000 users2026-10-24: 3,000 users2026-10-31: 3,000 users2026-11-07: 3,000 users3,0002.95K3K3.05KTracking began27 Sep11 Oct25 Oct2026-09-27: 3,000 users2026-10-03: 3,000 users2026-10-10: 3,000 users2026-10-17: 3,000 users2026-10-24: 3,000 users2026-10-31: 3,000 users2026-11-07: 3,000 users3K
Average rating
3.603.7027 Sep11 Oct25 Oct3.673.603.7027 Sep11 Oct25 Oct3.67
Number of ratings
327 Sep11 Oct25 Oct3327 Sep11 Oct25 Oct3
New version One point per check. Source: the extension's public Chrome Web Store listing.
Show the numbers
CheckedUsersRatingRatings
2026-11-073,0003.673
2026-10-313,0003.673
2026-10-243,0003.673
2026-10-173,0003.673
2026-10-103,0003.673
2026-10-033,0003.673
2026-09-273,0003.673
Users, 7 days
No change
since a week ago
Users, 30 days
No change
+0.0%
Rank
#12,533
by users, of 292,125 extensions
In its category
#1,099
of 30,444 in Developer Tools

What changed

Every change found on a check, newest first

No changes found since tracking began on 27 Sep 2026.

Developer history

Moves to another publisher account and new contact emails, newest first

No move to another account and no new contact email since tracking began on 27 Sep 2026.

We know contact emails only by a keyed hash, so they're never shown. Recent account and contact changes →

What it can access

From the extension's manifest, in plain language

Sites
  • *://*.validator.w3.org/*validator.w3.org and its subdomains
Browser features
  • activeTabThe tab you're on, only after you click the extension
  • scriptingRun scripts on sites it can reach
  • tabsRead the addresses and titles of your tabs

More from this developer

Other extensions from the same publisher account

ExtensionUsersRatingRatingsCategory
HTML Downloader1,000 5.002 Developer Tools
All 2 extensions by 인스웨이브 시스템즈 →

About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 7 Nov 2026, 03:05 UTC; next check around 14 Nov 2026.

How we collect the data

Cite this page

Citation
Extension Tracker. “W3C Markup Validation Service for CSR pages” (kfjemflfclknofbklcnbnpjelkfhcomk). Chrome Web Store data, last checked 2026-11-07. https://extensiontracker.com/extension/kfjemflfclknofbklcnbnpjelkfhcomk. Accessed 2026-11-13.
BibTeX
@misc{extensiontracker_kfjemflfclknofbklcnbnpjelkfhcomk,
  title   = {W3C Markup Validation Service for CSR pages (kfjemflfclknofbklcnbnpjelkfhcomk)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-11-07},
  url     = {https://extensiontracker.com/extension/kfjemflfclknofbklcnbnpjelkfhcomk},
  urldate = {2026-11-13}
}

The data is free to reuse under CC BY 4.0.

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