What file types can I upload?

You can upload .html files. The tool will read the file content and load it into the editor. Other file types will be rejected with an error message.

Is there a size limit for HTML files I can edit?

There's no hard limit, but very large files may cause performance issues in the browser. For best results, keep files under 1MB.

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Online HTML Tool Editor

Edit HTML code with live preview in a dual-pane interface. Upload HTML files, format code, and download results instantly.

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5,136+

Total Calculations Run

< 15ms

Browser Execution Speed

100%

Client-Side Privacy

4.9 / 5.0

User Satisfaction

AI Web Tool Generator

Build Your Own Custom Web Calculator in Seconds

Type what tool or calculator you need below. Our AI will build it instantly for your site.

About This Tool

This Online HTML Tool Editor provides a complete web-based environment for editing HTML code. The tool features a dual-pane interface with a code editor on the left and live preview on the right. You can type HTML directly, upload existing HTML files, format your code with proper indentation, and see changes update in real-time. The tool includes syntax highlighting, error detection, and the ability to download your edited HTML. All processing happens client-side for maximum privacy and speed.

Save your calculation history with a free account

How to Use

Type HTML code in the left editor pane or upload an HTML file using the upload area
Watch the live preview update automatically as you type
Use the 'Format HTML' button to clean up and indent your code
Click 'Download HTML' to save your edited code as a .html file
Click 'Clear All' to reset the editor and start fresh

Frequently Asked Questions

Find Quick Answers

Does this tool require an internet connection to work?

Yes, the tool loads initially from our servers, but all HTML editing and preview functionality works entirely in your browser without sending data to external servers.

What happens to my HTML code? Is it stored anywhere?

Your HTML code is processed entirely in your browser and never sent to our servers. All editing happens locally for complete privacy.

Can I edit CSS and JavaScript in this editor?

This tool focuses specifically on HTML editing. While you can include