Flatten PDF

Fast, secure, and professional-grade file processing

Select your files

Supports PDF files up to 100MB

Flatten PDF Online Free — Lock Forms & Annotations

Bake form fields, comments, and stamps permanently into the page so your document looks the same everywhere and cannot be changed.

Common Use Cases

Lock Filled Forms

Make a completed form non-editable before sending it for approval.

Preserve Annotations

Ensure highlights and comments appear identically in every PDF reader.

Final Documents

Produce a tamper-resistant final version of a signed or stamped document.

How to Use Flatten PDF

1

Click on the upload area to select your PDF file, or drag and drop it directly into the workspace.

2

No configuration needed — all form fields and annotations are flattened automatically.

3

Click the Process button and wait a moment while our secure cloud infrastructure handles the file.

4

Once processing is complete, click the Download button to save your file.

Frequently Asked Questions

What does flattening a PDF actually do?

Flattening merges interactive elements — form fields, annotations, and stamps — into the static page content so they display consistently and can no longer be edited.

Are my files secure during processing?

Absolutely. We don't store or inspect your files. They are processed over secure connections and automatically deleted from our servers.

Is it really free to use?

Yes, this tool is 100% free to use with no registration, subscriptions, or watermarks.

Do I need to install any software?

No installation is required. EZEPDFTOOLS runs entirely in your web browser on any device.