Flatten PDF
Merge annotations, forms, and layers into a single, uneditable PDF layer.
About Flatten PDF
Flattening a PDF permanently merges all interactive elements — including form fields, annotations, comments, stamps, and transparent layers — directly into the static page content. The result is a clean, universally compatible document that looks exactly as intended on every viewer, with no editable fields or floating objects that could shift or disappear. PDF Ops Flatten PDF runs entirely in your browser using pdf-lib, so your files never leave your device, there is no signup required, no watermarks are added, and the tool is completely free to use. It is ideal for finalising contracts, locking filled forms before sharing, preparing print-ready files, or simply reducing visual inconsistencies caused by unsupported PDF layers.
How to use Flatten PDF
- 1Click the upload area or drag and drop your PDF file onto the page.
- 2Preview the document pages to confirm the file loaded correctly.
- 3Choose your flatten options — such as flattening form fields, annotations, or all layers.
- 4Click the Flatten PDF button and wait a moment while your browser processes the file.
- 5Download the flattened PDF instantly — no email, no account, no waiting.