Flatten PDF Online
Merge interactive form fields, checkboxes, digital signatures, and annotations permanently into PDF page content.
Choose Files
or drop documents directly into this area
Fast & High Quality
Automatic 2-Hour Purge
Multi-File & Batch Support
How to use Flatten PDF Online
Upload your source file(s) using the secure drag-and-drop zone above.
Configure any available options or settings for your conversion.
Click Flatten PDF to start fast, automated processing.
Download your verified, high-quality result instantly.
Frequently Asked Questions
Our high-performance converter processes your files in-memory using sandboxed worker pipelines, guaranteeing high fidelity, fast throughput, and automated verification before download.
Yes. All file processing is performed in strictly sandboxed worker environments. Uploaded files and converted results are automatically purged from cache within 2 hours.
Yes. You can upload multiple files at once. The platform automatically processes them and delivers a consolidated ZIP download.
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