W3C Web Validator installs statistics

By Celian Riboulet · VS Code Marketplace · Linters

Check the validity of your HTML/CSS files in one click

View on VS Code Marketplace Fresh · Oct 19, 2026

W3C Web Validator has 278,671 recorded installs on VS Code Marketplace.

It ranks #1210 of 2,501 tracked VS Code Marketplace listings by installs.

It is rated 4.8 out of 5 from 13 ratings.

PluginStats has 4 daily observations since Oct 16, 2026; the latest is from Oct 19, 2026.

Installs: 278,671; Official API · Oct 19, 2026
7-day growth: —; Insufficient history
30-day growth: —; Insufficient history
90-day growth: —; Insufficient history
Rank: #1210; Among tracked VS Code Marketplace listings

Rating: 4.77 / 5 from 13 ratings

About W3C Web Validator

VSCode W3C Web Validator

Check the markup validity of your web documents !

Validity is one of the quality criteria for a Web page

1/ Start the validation of your file !

Press the extension button and the validation will start right away.

2/ Check if any issue is detected !

If errors are detected you'll be able to see them directly in your file.

3/ Correct your issues !

All errors and warnings have a diagnostic that will help you to correct them.

Report a bug Author : Riboulet Célian

Description from the VS Code Marketplace listing.

CSS
HTML
standard
validation
validator
W3C
web
web validator

Where W3C Web Validator sits in the listing

Each band is one page of 20. Installs on a log scale. Placement is projected from installs, so it can differ from the marketplace's own sort order. Hover a dot to see the listing.

All VS Code Marketplace2,501 listings · 126 pages · page 61, #10 (overall #1210)

All VS Code Marketplace: every listing in installs order

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Linters252 listings · 13 pages · page 8, #10 (overall #150)

Linters: every listing in installs order

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Charts

Images: 30d · 1y · all time · 1600×900 dark

Adoption over time

W3C Web Validator installs on VS Code Marketplace, last 90 days: 278,671 installs as of Oct 19, 2026.

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7/30/90-day growth

W3C Web Validator installs growth on VS Code Marketplace: 7-day growth unavailable, 30-day growth unavailable, 90-day growth unavailable.

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Ranking history

W3C Web Validator VS Code Marketplace ranking history: currently #1210 (by installs).

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Ratings over time

W3C Web Validator ratings on VS Code Marketplace, last 90 days: 13 ratings as of Oct 19, 2026.

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Filled points are observed values; hollow points come from Internet Archive snapshots of the listing page. Dashed segments span periods with no observations — values between points are not interpolated.

Recent observations

Full history (4)

Recent installs observations for W3C Web Validator
Date (UTC)	Installs	Change vs. previous	Source	Precision
Oct 19, 2026	278,671	+100	Official API	Exact
Oct 18, 2026	278,571	+13	Official API	Exact
Oct 17, 2026	278,558	+150	Official API	Exact
Oct 16, 2026	278,408	—	Official API	Exact

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Data source

Install counts, average rating, and rating counts come from the public Visual Studio Marketplace gallery API. Installs are cumulative and exclude updates.

Listing: https://marketplace.visualstudio.com/items?itemName=CelianRiboulet.webvalidator. First seen Oct 16, 2026; last successful collection Oct 19, 2026. See the methodology.