FREE HTML Editor and HTML / HTML5 / XHTML Checker

"I have used CSE HTML Validator Lite for years now, I love it. I've recommended it to several people. Thanks for a great product!"
- Christine

"I was used to a free online tool, which is nowhere near as simple to use as CSE HTML Validator Lite. It suits all my needs as a web developer and I have recommended it to many colleagues already!"
- T. Kramer

"CSE HTML Validator Lite is a superb application -- does everything I hoped and much more."
- Charles Toth, CSE HTML Validator User in Keyser, WV

Want more? Check HTML/HTML5, XHTML, CSS/CSS3, JavaScript, PHP, links, SEO, accessibility, and more with CSE HTML Validator Std/Pro or Enterprise.

Download Pro Trial

NEW! Version 12.01

Clean up your site with CSE HTML Validator Lite for Windows! CSE HTML Validator Lite is an award winning FREE (for personal and educational use) HTML editor and basic HTML / HTML5 / XHTML syntax checker for Windows XP and Windows 7/8.

CSE HTML Validator Lite can:

Includes support for HTML5
Find bad or misspelled tags
Find missing end tags
Find bad or missing attributes
Find other HTML / XHTML syntax problems
Check spelling with the built-in the editor
Quickly change all tags and attributes to lowercase
Automatically place quotation marks around all attribute values
Strip HTML tags from HTML documents, leaving only the text
Quickly change all the headers and/or footers of every page of your web site (when you design your pages using the template tool)

"There aren't many freeware programs out there these days that are this well done and useful."
- Tim Matheson, CSE HTML Validator User

"I downloaded CSE HTML Validator Lite about two months ago and have used it ever since. It's absolutely delightful to use - and has options for everything you can think of (and a lot that you can't!). But in spite of the options, it can be used by amateurs like myself with the default values only. I have tried several other validators before and none comes near it for ease of use, flexibility, and thorough reliability. When I develop to the stage of needing the even more powerful edition, I won't bother to look elsewhere, as I'm confident this product will be of the highest standard also. Well done, and thanks."
- Phil Taylor, CSE HTML Validator User

"I just downloaded the free version and used it immediately. Already I can't say enough about this product! As soon as I have a few bucks ahead I absolutely will be upgrading, and recommending CSE HTML Validator products to everyone I know who makes web pages."
- Connie Srnka, CSE HTML Validator User

(Or alternate download)

CSE HTML Validator Lite is an award winning free (for personal and educational use) HTML editor and basic syntax checker! CSE HTML Validator Lite v12.01 improves upon the previous lite versions, is more up to date (with HTML5 support), and includes a built-in HTML/XHTML/text editor with dynamic help, syntax highlighting, split view, and spell checking.

Commercial editions are also available; these editions include link checking, a more powerful built-in HTML/XHTML/text editor, a batch wizard, thorough syntax checking, CSS syntax checking, and much more. These editions are recommended for business and government websites and for serious or professional web developers.

NOTE: CSE HTML Validator Lite is free for personal and educational use only. It is NOT free to use for business, government, or any for-profit use unless paired with a paid license of CSE HTML Validator Standard or CSE HTML Validator Professional with the same major version number (like v11.0, v12.0, etc.).

Edition Comparison Table (v12.0)
Item/Feature	Lite	Standard	Professional	Enterprise
Price (single license)	FREE (*)	US $69 Buy	US $129 Try Buy	US $299 Buy
Editor split view/Full screen mode	/	/	/	/
HTML, XHTML, CSS editing
Integrates with other software
Open documents from the web
Spell checking (Editor/Validator)	/ No	/	/	/
Superior HTML/XHTML checking
JavaScript linting/checking
PHP syntax checking (requires PHP)
CSS syntax checking
Accessibility checking
Section 508 accessibility checking
Search engine messages/tips
Disable messages you don't want
Pretty print & fix
Link checking
Email address format checking
Integrated web browser
Lots of helpful advice
More frequent updates
Batch Wizard
Add your own tags and messages
XML message output
FREE major upgrades	NA	60 days	1 year	1 year
Priority support & maint (PS&M)		Available	Available	Included
Batch Wizard enhancements

*CSE HTML Validator Lite is free for personal and educational use only.

What Edition is Recommended? (A General Guide)

Recommended Usage Table - A General Guide
Use	Lite	Standard	Professional	Enterprise
Simple HTML Checking Only
Personal/Hobby Only
Learning & Education
Non-profit Organization
Small Business
Medium Business
Government
Large Business
Generate Reports for Small & Medium Sites
Generate Reports for Large Sites

Download CSE HTML Validator Lite

Want more?

Check HTML/HTML5, XHTML, CSS/CSS3, JavaScript, PHP, links, SEO, accessibility, and more with CSE HTML Validator Std/Pro or Enterprise.

Download Pro Trial

Download the latest version of CSE HTML Validator Lite v12.01 for Windows XP and Windows 7/8 (about 6.3 MB):

Link	Protocol	Location
cselite.exe	HTTP	Primary - CNET Download.com
cselite.exe	HTTP	Secondary - Dallas, TX, USA

Report Download Problems

After downloading, simply run the downloaded file to install CSE HTML Validator Lite.

Screenshot of CSE HTML Validator Lite v12.0 — **CSE HTML Validator Lite** screen shot showing the validation results at the bottom. Shown running on **Windows 8**.