Flatten PDF

Our Flatten PDF tool allows you to convert interactive form fields (like checkboxes, text boxes, and drop-downs) and annotations into static content. This ensures that no one can change the information you have filled out.

Choose a PDF file

Or drop your PDF file here

Make PDF Forms and Annotations Non-Editable

Our Flatten PDF tool allows you to convert interactive form fields (like checkboxes, text boxes, and drop-downs) and annotations into static content. This ensures that no one can change the information you have filled out.

The flattening process runs entirely within your web browser. This means your private documents are never uploaded to any external server, guaranteeing total privacy and security.

Key features

  • 100% Client-Side Processing We use advanced Web technologies to flatten your PDF locally on your device. Your data never leaves your browser.
  • Lock Your Forms Make sure the data you entered into a PDF form is permanent and cannot be modified by the recipient.
  • Print Ready Flattening ensures that all visual elements, including annotations and stamps, will print exactly as they appear on screen.
  • Completely Free No hidden costs, no file size limits, and no registration required.

How to Flatten a PDF

Follow these simple steps to make your PDF non-editable.

  1. Upload File Click the upload area or drag and drop your PDF file with forms/annotations into the dropzone.
  2. Flatten Click the "Flatten PDF" button to start the process.
  3. Download Download your newly flattened file, which is now static and non-editable.

Usage tips

  • Flattening is highly recommended before sending signed documents or finalized contracts.
  • Keep a backup of your original fillable PDF in case you need to make changes later.
  • This process also merges sticky notes and text highlights into the document layer.

Frequently asked questions

No. All processing happens entirely within your web browser. We never upload, store, or see your files.
Interactive form fields (text boxes, radio buttons, checkboxes) and annotations (highlights, sticky notes, stamps) become a permanent part of the page.
No. Flattening is a permanent one-way process. It is advised to keep a copy of your original file.