How to use Flatten PDF
- Drop a PDF
- Choose whether to also rasterize pages (strongest)
- Click Flatten PDF and download
About this tool
Standard flattening draws each form field’s current value into the page and removes the interactive field and annotation layer. Rasterize goes further, turning every page into an image so nothing can be edited (text is no longer selectable).
Frequently asked questions
Why flatten a PDF?
Some portals and printers mishandle form fields. Flattening also stops anyone changing your answers.
Can I unflatten a PDF?
No. Keep the original if you might need to edit it.
What happens to comments?
Annotations such as comments and highlights are removed in standard mode. Rasterize keeps their appearance by drawing pages as images.
Are my files uploaded to a server?
No. ConvertBrightly processes files with JavaScript inside your browser. Nothing is sent over the network, and the files disappear when you close the tab. You can even disconnect from the internet after the page loads.
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