Flatten PDF
Bake annotations and form fields into the page.
Merge form fields, comments, sticky notes, signatures and any interactive layers into the page image. The result renders the same everywhere and no one can undo or move the annotations.
How it works
Four calm steps.
- 01
Drop your file
Drag the PDF with annotations or form fields onto the upload card, or click to pick it from your device. You can also paste a link to a file hosted online.
- 02
Pick what to flatten
All annotations, forms only, signatures only, or a custom subset. Interactive form data is preserved as printed values.
- 03
Let us do the work
Our engine rasterises interactive layers into the page in a few seconds. Nothing leaves the encrypted pipeline while it runs.
- 04
Download the result
Save the flattened PDF to your device, share a temporary link, or send it straight to Google Drive or Dropbox. Files are wiped from our servers within one hour.
Why Flatten PDF
Built to be the last flatten pdf tool you try.
Once flattened, no one can move a signature or clear a form field.
The rest of the document is untouched – only the interactive layer is baked in.
Uploads travel over TLS, files are encrypted at rest, and every trace is deleted within 60 minutes. We do not read, index, or train on your documents.
The free tier handles most day-to-day work. You only create an account if you want history, larger files, or batch automation.
FAQ
Questions people ask.
Yes – the entered values are baked in as page content. The fields themselves are gone.
No. Keep the original if you might want to edit annotations later.
Yes. The free tier covers everyday use – you can flatten several files per hour without an account. Pro unlocks larger uploads and batch jobs.
They live in an encrypted staging area for at most one hour, then they are permanently deleted. Nobody on our team can browse them.
No. Everything runs in your browser against our servers – Windows, macOS, Linux, iOS and Android are all supported.
Yes. Locks your annotations is free on the no-signup tier with no watermark added to your files. A paid plan only lifts batch and file-size limits for heavy users.
No. Locks your annotations runs entirely in your browser - there is nothing to download and no account is required to get started.
Yes. Uploads travel over an encrypted connection, are processed in an isolated pipeline, and are permanently deleted from our servers within 60 minutes. We never read, index or train on your documents.
On the free tier Locks your annotations accepts files up to 100 MB. Larger documents are supported on the paid plan, or you can split a big file first.
Yes - Locks your annotations is fully responsive and works in Chrome, Safari, Edge and Firefox across Windows, macOS, Linux, iOS and Android.
No. Locks your annotations only applies the change you make and leaves the rest of the pages, fonts and layout exactly as they were.