Developer Tools
Use W3C html validator online to validate html for errors and syntax issues. AI suggestions help to optimize code with html checker
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Developer Tools
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Audience & ratings
Store users
548
30K
Ratings
What stands out
HTML Validator reports the larger audience. These are store counts. The rating difference is 1.54 points across 3 and 37 ratings.
Category overlap does not establish that two products serve the same workflow.
Product & publisher
Publisher
drjo7178
Marc Gueury
Publisher portfolio
1 listing
1 listing
Listing status
Active
Active
Manifest
Version 3
Version 3
Package size
1.07MiB
2.5MiB
Permissions & access
Requested capabilities describe access, not developer intent or a safety verdict.
API permissions
1 requested
- storage
5 requested
- storage
- activeTab
- clipboardWrite
- webNavigation
- scripting
Website patterns
None recorded
1 recorded
- <all_urls>
Releases
Explore the release history
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Observed
3 Oct 2026
2 Oct 2026
Store users and ratings are observations, not revenue or lifetime installs. A larger audience or a higher score does not establish product quality.
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HTML validatorDeveloper Tools
HTML ValidatorDeveloper Tools