Toolipedia- Free
- No sign-up
- Works on any device
No tool matches your search.
- Free
- No sign-up
- Works on any device
Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
- Free
- No sign-up
- Works on any device
Fill in the details to see your QR code.
PNG for phones, chats and websites. SVG and PDF stay sharp at any size, which is best for printing. Tip: point your phone camera at the preview to test it.
3. Style (optional): colors, dots, logo
Choose a photo or screenshot or drag it here
Works with photos of printed codes, screenshots and image files.
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HTML validator
Check HTML for errors with the official W3C validator: paste code, upload a file or enter a URL.
- Free
- No sign-up
- Works on any device
About HTML validator
Sends your HTML to the official W3C validator, whether you paste code, upload a file or give a URL, and lists errors and warnings with line numbers. Typical findings are unclosed tags, duplicate IDs and missing alt attributes. Valid HTML helps browsers render consistently and supports accessibility.
How to use HTML validator
- Set the options above. The result updates live.
- Change anything until it's just right.
- Copy the result or download it.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
Do HTML errors hurt my search ranking?
Not directly, since browsers tolerate many mistakes. But serious errors can break layout or hide content from crawlers, so cleaning them up is still worthwhile.
Is HTML validator free?
Yes. HTML validator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.