Flatten PDF Form Fields & Annotations
Lock interactive text inputs, checkboxes, and signatures into permanent printable page content.
How to Use PDF Flatten
Manage and modify PDF documents safely in your browser:
Select PDF Document
Choose your file from your computer or phone. Loaded directly into local RAM.
Configure Options
Select pages, enter watermark text, choose quality, or adjust settings.
Download Processed File
Save your output document instantly with pristine formatting and zero watermarks.
Key Features & Capabilities
🔒 100% In-Browser Privacy
Your contracts, tax returns, and confidential documents never touch remote cloud servers.
⚡ Instant Client-Side Execution
Powered by native WebAssembly and pdf-lib for multi-megabyte speed without upload delays.
📱 Mobile & Desktop Ready
Runs cleanly across Chrome, Safari, Firefox, Edge, iOS, and Android.
🚫 Zero Subscriptions or Ads
No account required, no daily document limits, and no branding stamped on your pages.
Frequently Asked Questions
Why flatten a PDF form?
Flattening prevents recipients from altering filled-in form fields and ensures identical printing across all PDF readers.