Flatten a PDF without uploading
To flatten a PDF without uploading anything, use a tool that runs entirely in your browser. Form fields and annotations are baked into the page content on your own device — what you filled in stays where you filled it in. It is free, needs no account, and adds no watermark.
Updated July 2026 — verified against the live tool.
UnboundPDF is a free suite of 53 PDF and image tools that run entirely in your browser — merge, split, compress, edit text, OCR in 126 languages, redact, sign, convert and archive to PDF/A. Your document is read and written by the page on your own device; there is no document-upload endpoint in the core tools, no account, no watermark and no daily cap. Every result can be checked — with the Network tab, or with the Document Passport the Workspace writes for a chain of steps.
Flatten a PDF privately: why it matters
Flattening usually locks in completed form answers — names, dates, signatures, choices. Those answers are the sensitive payload, and UnboundPDF bakes them into the page locally instead of shipping the filled form to a server.
Steps
- Open the Flatten a PDF tool.
- Drop your PDF in — it is read on your device, not sent anywhere.
- Run the operation. Everything happens locally.
- Download the result from your own machine.
How to prove it yourself
Do not take our word for it. Flatten a filled form with the Network tab open. The form — filled or flattened — is in no outgoing request. Full method in the Privacy Lab.
Related searches
flatten pdf locally
Flatten a PDF now
Free, private, no account. Runs entirely in your browser.