PDF Tools
Flatten a PDF
Bake a PDF's fillable form fields into the page so their values can no longer be edited or cleared — entirely in your browser. Everything else stays exactly as it was, and the file is never uploaded. No account, no email.
Frequently asked questions
- What does flattening do?
- It takes the values typed into a PDF's fillable fields and makes them a permanent part of the page — afterwards they can no longer be edited, cleared, or re-filled. Useful for sending a completed form that the recipient can't alter, or for locking a signed form.
- Does my file get uploaded?
- No. The form is flattened entirely in your browser, on your own device — the PDF never leaves your computer and never reaches a server. It even works with your connection switched off.
- Does it change anything else in the document?
- No. Only the interactive form fields are flattened; all other text, images, and layout are left exactly as they were (it's lossless). A PDF with no fillable fields is left alone — the tool tells you there's nothing to flatten rather than re-saving it.
- Can I flatten a form I signed here?
- Yes — sign it with the Sign PDF tool, then flatten it to lock everything in place. Both run on your device, so the signed form is never uploaded.