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ConvertBox

Text Cleaner

Clean messy text in your browser: normalize whitespace, remove duplicate lines, sort lines, extract URLs or emails, reverse text, and escape HTML.

Cleanup Action

Collapse repeated spaces, tabs, and line breaks into single spaces.

How to Use

  1. Paste text into the input area
  2. Choose a cleanup action from the left panel
  3. Review the result and copy it or use it as the next input
  4. Copy the formatted or generated result directly to your clipboard.
  5. Use the result in your application, configuration, or documentation safely.

All processing is done in your browser, and files are never sent to a server.

Frequently Asked Questions

No. All text cleanup runs locally in your browser.
Yes. Click Use as input after a step, then choose another action.
Yes. The first occurrence of each line is kept in its original order.
No. All operations are processed entirely inside your browser's local sandbox using client-side APIs (like WebAssembly, pdf-lib, or HTML5 Canvas). Your files and data never leave your device.
The tool is completely free with no usage limits. However, since processing occurs in your browser's memory, we recommend keeping file sizes under 50MB (especially for heavy files like PDFs or videos) to ensure stability.
No. All tools on ConvertBox are 100% free. We do not insert watermarks, limit features, or require any registration or payment.
Yes. Once the page and its local library dependencies are loaded in your browser, the conversion logic runs completely offline without needing an active internet connection.

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