Flatten PDF

Convert forms and annotations to static, uneditable content

Drag & drop files here

or click to choose files

Options

How to flatten pdf in 3 Steps

1

Upload the PDF file with forms or annotations

2

Choose to flatten forms, annotations, or both

3

Click flatten and download the PDF

About the Flatten PDF Tool

Flatten PDF online permanently embeds all annotations, form fields, and comments into fixed content. Flattened files can't have annotations edited, ensuring consistent display across all devices.

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Flatten Form Fields

Converts fillable forms into fixed text. Recipients can't modify filled-in content.

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Flatten Annotations

Comments, highlights, stamps become permanent parts of the page. Can't be deleted or modified.

✅

Consistent Display

Flattened files look identical on every PDF reader. No font issues or annotation visibility problems.

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Reduced File Size

Removes annotation layers, often resulting in smaller files after flattening.

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BetaPDF renders all annotations onto the fixed page content then removes separate annotation layers. Form fields are converted to static text. Flattening is a one-way process — it cannot be undone.

🎯

Perfect for: sending filled forms that can't be altered, sharing reviewed documents with permanent comments, preparing print files. Before flattening, ensure all edits are complete. Then password-protect or compress the file.

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Usage Examples

Lock forms

Input5-page fillable form PDF
Options
flatten_forms: Cóflatten_annots: Không
→OutputPDF with forms as static text
🎯Send filled form, prevent editing

Merge annotations

InputReview PDF with highlights
Options
flatten_forms: Cóflatten_annots: Có
→OutputClean PDF, no annotations
🎯Finalize reviewed document

Frequently Asked Questions

Converting fillable forms and annotations (highlights, notes) into fixed content that cannot be edited.

Yes — unlike scanning/rasterizing, text remains searchable and copyable.

No — keep the original if you need to edit later.

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