To prevent recipients from changing form values, or to bake in annotations before sending to a printer that doesn't render them.

Yes. Flattening runs in your browser - no daily limit, no watermarks.

Are my files uploaded?

No. The PDF stays on your device.

What about my comments and highlights?

Page-level annotations are stripped during flattening. If you want to keep them visually, print to PDF first then flatten.

No - keep your original file. Once form fields are baked in, the editable state is gone.

Decrypt first with an unlock tool, then flatten.

Drop a file

Drag your PDF here

or click to browse

Lock down a PDF before sharing. Form field values, comments, and sticky notes become permanent page content. Runs in your browser.

How it works

Your files are safe

256-bit TLS
Every upload travels over modern TLS. Files at rest are encrypted with AES-256.
Deleted in 24h
Uploaded files and outputs auto-delete from S3 within a day of your job.
Browser-first
Most tools run on your device. Cloud tools are clearly labelled, never silent.
No watermarks
Outputs are pristine PDFs. Free tier, no signup, no branding on your files.

FAQ

To prevent recipients from changing form values, or to bake in annotations before sending to a printer that doesn't render them.

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