Flatten PDF
Lock form fields and annotations permanently into the page.
Drop your file here, or browse
PDF — max 50 MB
How it works
- 1
Upload your PDF — filled forms, annotations, or layered content
- 2
We flatten everything using Ghostscript — fields become plain text
- 3
Download your flattened PDF — no editable fields remain
Features
- Permanently bakes form fields into page content
- Flattens annotations and markup
- Merges transparency layers
- No signup required
- Files deleted immediately after processing
Frequently asked questions
What does flattening a PDF do?
Flattening converts interactive elements — form fields, checkboxes, annotations — into static page content. The PDF looks the same but the fields can no longer be edited.
Why would I flatten a PDF?
Common reasons: you've filled in a form and want to lock the values so they can't be changed, you're sending a PDF for signing or printing and don't want editable fields, or you need to ensure consistent rendering across all PDF viewers.
Is flattening reversible?
No. Once flattened, interactive elements are permanently merged into the page. Make sure to keep a copy of the original if you might need to edit it again.
Is my file safe?
Yes. Your file is processed in memory and deleted immediately after you download the result. We never store or read your documents.