Validate HTML

Validate HTML is listed under Firefox Extensions in Tools.

Imported from open directory source: mozilla-amo.

Visit the official page for details.

Link: addons.mozilla.org.

Use this page to check whether Validate HTML fits your needs before you visit addons.mozilla.org. We highlight access (Free), category (Tools), and similar free alternatives so you can compare without hunting across random lists.

Good for

Using Validate HTML as a free Tools resource with no paid wall to start.
Bookmarking a trusted official link instead of random mirrors.
Building a personal toolkit of free websites in one place.

About Validate HTML

Validate HTML is listed under Firefox Extensions in Tools. Imported from open directory source: mozilla-amo. Visit the official page for details. Link: addons.mozilla.org.

Good for

Using Validate HTML as a free Tools resource with no paid wall to start.
Bookmarking a trusted official link instead of random mirrors.
Building a personal toolkit of free websites in one place.

Not ideal for

Expecting paid enterprise features for free.
Offline-only workflows if the site is web-first.
Guaranteeing every region has the same catalog.

How to use Validate HTML

Open the official Validate HTML link from the Visit button above (new tab).
Confirm the access type (Free) matches what you can use today.
If it is not a fit, browse more free sites in Tools below.

FAQ about Validate HTML

Is Validate HTML free?

Validate HTML is listed as Free on Webjell. Always confirm pricing and limits on the official site before you rely on it.

Is Validate HTML safe to open?

We point to the official destination (addons.mozilla.org). Still use normal caution: check the URL, avoid fake mirrors, and do not enter passwords on lookalike pages.

Do I need an account for Validate HTML?

Many free sites let you browse first; some features may still ask for a free account. Check on Validate HTML after you open the official link.

What are alternatives in Tools?

Scroll to More free sites in Tools on this page for similar Webjell listings related to Validate HTML.