Flatten PDF Online Free | Flatten Forms & Annotations

Flatten PDF Online — Merge Layers, Forms & Annotations

No downloads needed. Two modes available: 'Standard Flatten' merges form fields, annotations, and signatures into static content; 'Rasterize' converts each page to an image making content completely non-editable. Completely free with no watermarks.

Standard flatten: merge fillable forms, annotations, and signatures into static page content
Rasterize mode: convert each page to an image — text becomes non-selectable, non-copyable, non-editable
Dual-mode flexibility: switch between standard flatten or deep rasterization based on protection needs
Ensure consistent display across all readers for printing and sharing

Beyond Flattening: Guaranteed Display Consistency

Standard Flatten Mode

Merges fillable form fields (text boxes, dropdowns, checkboxes), annotations, highlights, and handwritten signatures into the page as non-editable static content — while keeping text searchable.

Deep Rasterization Protection

Converts each page to a high-resolution image and repackages as PDF. All text becomes image-based — cannot be selected, copied, or edited. Ideal for tender proposals and contracts requiring tamper-proof protection.

Flexible Dual-Mode Switching

Standard flatten suits formal form submissions (text stays searchable). Rasterize suits anti-copy protection (text becomes images). Choose the best mode for your protection needs.

Chain Multiple Operations

Combine with compression, merging, or format conversion in one continuous flow — no re-uploading.

Files Deleted After Processing

Your files are processed on EU servers and permanently deleted afterward. Nothing is cached or stored.

Runs in Your Browser

No app or plugin needed. Works on any device — desktop, phone, or tablet.

Flatten a PDF in Just 3 Steps

Upload Your PDF

Click "Choose Files" or drag and drop your PDF.

Automatic Flattening

The system automatically detects and flattens all editable elements.

Download Your Flattened PDF

Download your PDF with all interactive elements flattened to static content — for free.

PDF Flattening FAQ

What's the difference between standard flatten and rasterize?

Standard flatten merges interactive elements into the page but keeps text searchable and selectable. Rasterize converts each page to an image — text becomes completely non-selectable, non-copyable, non-editable. Standard mode produces smaller files; rasterize provides more thorough protection.

Can I edit forms after flattening?

No. Both modes convert editable elements to static content — ensuring data cannot be tampered with.

Will the file size change?

Standard flatten typically decreases file size slightly (interactive metadata removed). Rasterize may increase file size (text becomes high-resolution images).

What are the free plan limits?

Free users can process PDFs up to 100 MB. Upgrade to Pro for larger files.

Is flattening safe?

Your files are safe. 256-bit encrypted transfer, EU-based servers, GDPR compliant, and permanently deleted after processing.

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