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Free Tool Arena

File & Format Converters · Free tool

Flatten PDF

Flatten filled form fields, highlights, and annotations into the page so they can't be edited. Runs entirely in your browser.

Updated April 2026

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What it does

Flatten filled form fields, highlights, and annotations into the page so they can’t be edited. Runs entirely in your browser.

Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.

How to use it

  1. Fill in the inputs or drop your file.
  2. Click the primary button to run.
  3. Copy or download the result.