Flatten PDF Forms & Annotations
Lock interactive form fields and annotations into static page content so values cannot be altered by recipients.
1. Select Document Input
Upload your own file(s) or load a real sample document to test Flatten PDF immediately.
How to Use Flatten PDF
- 01.Upload a PDF with interactive form fields or annotations.
- 02.Choose Vector Form Flatten (keeps text selectable) or Full Page Raster Flatten.
- 03.Download the flattened PDF.
Document Processing & Privacy Notes
Supports vector AcroForm flattening (form.flatten()) as well as full-page raster flattening for complete visual immutability.
Processed 100% locally in your browser.
Frequently Asked Questions — Flatten PDF
Why should I flatten a PDF before sending a signed contract?
Flattening prevents recipients from clicking into form fields and changing numbers or text after you have reviewed the document.
Related Edit & Annotate Tools
View All 30 Tools →Stamp customizable page numbers (e.g., "Page 1 of 4"), running headers, and footers with configurable typography and margins.
Full canvas PDF editor: add text overlays, images, shapes, highlights, comments, stamps, watermarks, and signatures with Undo/Redo.
Inspect existing text lines extracted with exact PDF coordinates, modify text content in place, and export the updated PDF.
Inspect exact page dimensions (pt, mm, inches), edit Title, Author, Subject, and Keywords, and add document outline bookmarks.