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onHTML
What onHTML is
onHTML is a web-based playground for writing HTML, CSS, and JavaScript with a live preview. Its editor can save work automatically, format code, download files, share projects in one click, and provide a cheatsheet. No account or software installation is needed to try it. The service also advertises more than 50 built-in browser tools, including JSON formatting, password generation, QR codes, Base64 conversion, color picking, and Markdown preview. These tools run in the browser, and onHTML says data stays on the user’s device. The password generator supports bulk creation and lengths up to 128 characters. onHTML describes the editor as free, unlimited, and ad free. It offers English, Turkish, Spanish, French, Chinese, and Hindi interfaces. The Free plan is listed as free and includes HTML, CSS, JavaScript editing, live preview, and developer tools.
Who it suits
It suits people who need a browser editor for front-end code and quick developer utilities. It is also suitable for users who want to work without signing up or installing software.
What it does well
- Live preview for HTML, CSS, and JavaScript
- More than 50 built-in developer tools
- No account or installation required
- Automatic saving and one-click sharing
- Browser processing keeps data on the device
What to know first
- Web platform only
- No free trial is listed
- Not a full-stack runtime
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | Forever free · unlimited · no signup | Free |
As onhtml.com lists them, read 12 Oct 2026. The maker's own page has the final word.
Verdict
onHTML combines a front-end playground with a broad set of browser utilities. Its free, unlimited editor and no-signup access fit quick coding and sharing tasks.
Facts from onHTML's own pages
- Browser processing
- The developer tools page says the tools run entirely in the browser and that no data leaves the user's device. · onhtml.com, 12 Oct 2026
- Developer tools
- The site advertises more than 50 built in developer tools, including JSON formatting, password generation, QR codes, Base64 conversion, color picking, and Markdown preview. · onhtml.com, 12 Oct 2026
- Editor features
- The editor offers live preview, auto save, one click sharing, code formatting, download, and a cheatsheet. · onhtml.com, 12 Oct 2026
- Free plan
- Yes · onhtml.com, 22 Sept 2026
- Full-stack runtime
- No · onhtml.com, 22 Sept 2026
- Integrations
- The opened official pages describe browser tools and sharing but do not specify third party integrations. · onhtml.com, 12 Oct 2026
- Languages
- The homepage lists English, Turkish, Spanish, French, Chinese, and Hindi as language options. · onhtml.com, 12 Oct 2026
- No account required
- The site says users can try the editor without signing up or installing software. · onhtml.com, 12 Oct 2026
- No ads
- The homepage describes the service as ad free. · onhtml.com, 12 Oct 2026
- Password generator
- The password generator supports lengths up to 128 characters and bulk generation, and says passwords never leave the browser. · onhtml.com, 12 Oct 2026
- Platforms
- The official site describes onHTML as browser based and does not list separate desktop or mobile apps on the opened page. · onhtml.com, 12 Oct 2026
- Product
- onHTML is a browser based HTML, CSS, and JavaScript playground with a live preview. · onhtml.com, 12 Oct 2026
- Sharing
- The homepage says users can save their work automatically and share it in one click. · onhtml.com, 12 Oct 2026
- Tool limit
- The homepage describes the editor as forever free and unlimited. · onhtml.com, 12 Oct 2026
Where onHTML stands on Freedom251
- Coding Playgrounds#112 of 138