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Best alternatives to HTML Validator (2026)

7 Chrome extensions that do a similar job to HTML Validator, closest first. Each shows real store users, its rating, how recently it was updated and how many permissions it asks for.

HTML Validator: reviews, users and permissionsBest Developer Tools extensions

HTML Validator today

≈30K users3.5★ from 37 ratingsNot updated for 3+ years6 permissions

HTML Validator alternatives, compared

  1. 1

    HTML Validator

    Employ an HTML Validator online to swiftly validate HTML code. Leverage our syntax check verifier as an effective HTML error checker

    ≈2K users3.6★ from 7 ratingsNot updated for 2+ years6 permissions
    • About 15× fewer users than HTML Validator
    • Updated more recently
    Compare side by side
  2. 2

    XML Validator

    Quickly validate your XML and show the problem if there is any.

    ≈3K users4.3★ from 3 ratingsUpdated 3 months ago2 permissions
    • About 10× fewer users than HTML Validator
    • Updated more recently
    • Asks for fewer permissions (2 vs 6)
    Compare side by side
  3. 3

    AMP Validator

    Automatically checks each page for AMP validation.

    ≈50K users4.0★ from 94 ratingsNot updated for 2+ years4 permissions
    • About 1.7× more users than HTML Validator
    • Rated 0.5 stars higher
    • Updated more recently
    • Asks for fewer permissions (4 vs 6)
    AMP Validator alternativesCompare side by side
  4. 4

    CMP Validator

    The IAB Europe CMP Validator checks web pages for the availability of a TCF registered CMP and facilitates their auditing.

    ≈6K users3.3★ from 10 ratingsUpdated 7 days ago2 permissions
    • About 5.0× fewer users than HTML Validator
    • Updated more recently
    • Asks for fewer permissions (2 vs 6)
    CMP Validator alternativesCompare side by side
  5. 5

    HTML Visual Validation

    HTML Visual Validation gives you information about the html elements, live, on page.

    ≈5K users4.4★ from 8 ratingsUpdated 3 months agoNo special permissions
    • About 6.0× fewer users than HTML Validator
    • Updated more recently
    • Asks for fewer permissions (0 vs 6)
    HTML Visual Validation alternativesCompare side by side
  6. 6

    Total Validator

    Check websites are accessible, use valid HTML and CSS, and have no broken links or spelling mistakes. Requires separate application.

    ≈3K users2.9★ from 7 ratingsUpdated 21 months ago6 permissions
    • About 10× fewer users than HTML Validator
    • Updated more recently
    Total Validator alternativesCompare side by side
  7. 7

    zkPass Schema Validator

    The customer is validating the schema structure

    ≈5K users4.0★ from 3 ratingsNot updated for 2+ years5 permissions
    • About 6.0× fewer users than HTML Validator
    • Updated more recently
    • Asks for fewer permissions (5 vs 6)
    zkPass Schema Validator alternativesCompare side by side

HTML Validator alternatives: questions

What is the best alternative to HTML Validator?

By users, the most popular alternative is AMP Validator with ≈50K users and a 4.0-star rating. The closest match by what it does is HTML Validator.

Which HTML Validator alternative has the best rating?

AMP Validator has the highest rating of these alternatives with 50+ ratings: 4.0 out of 5 from 94 ratings.

Is there a HTML Validator alternative that asks for fewer permissions?

HTML Visual Validation asks for 0 permissions, against 6 for HTML Validator.

How many alternatives to HTML Validator are there?

We list 7 close alternatives to HTML Validator on the Chrome Web Store, picked by what they do and ranked by how close they are.

Users and ratings are the figures shown on the Chrome Web Store, re-checked continuously. Alternatives are matched on name, description, category and topic. Browse best-of lists by niche.