Form field locking

Field flatteningStatic final copyNo file upload required

Flatten PDF forms in your browser.

Turn form fields and annotations into fixed page content. Create a static output copy so fields and annotations are prepared for final distribution.

Input
Fillable PDF
Runtime
Browser tab
Output
Static PDF
Flatten PDFProtect PDFRedact PDFWatermark PDF

Drop a PDF to flatten

Inspect form fields and annotations, then export a static PDF copy for release or archive workflows.

Local processing · up to 50MB per file
How to use Flatten PDF
  1. 01

    Choose fillable PDF

    Select the PDF form or document with interactive elements. It is loaded into browser memory.

  2. 02

    Analyze fields

    The workflow identifies form fields, annotations, and interactive elements that should become static content.

  3. 03

    Create static PDF

    Interactive elements are converted into a final copy and prepared for download.

Flattening should make final-document intent explicit.

Field detection

The workflow identifies form fields, annotations, and interactive elements that need to be represented statically.

Static output

Fields are converted into final document content for easier distribution.

Visual preservation

The output aims to preserve the visible appearance while reducing editable form behavior.

Form security

Flatten sensitive forms locally so the final copy is easier to share and archive.

Final-copy workflow

Flattening is useful before sending signed forms, portal uploads, or archival copies.

Original stays intact

The tool creates a new flattened PDF instead of changing your source document.

A practical guide to secure PDF flattening

Flattening PDF forms is useful when you need a final, non-editable copy for distribution or archiving. Many online tools require uploading sensitive forms to remote servers. DocuStitch keeps standard flattening workflows local.

Why local flattening matters

When you flatten PDFs with DocuStitch, processing happens in the browser session so form data does not need a separate upload queue.

Final-copy preparation

The workflow converts interactive form behavior into static output while preserving the visible document as much as possible.

Field detection

Identifies form fields, annotations, and interactive elements that need static representation.

Visual preservation

Aims to preserve the appearance of the form while preparing a static output copy.

Complete output copy

Creates a new flattened PDF for distribution and archive workflows.

Local processing

Runs in your browser session without a third-party upload step for standard workflows.

Frequently asked questions about Flatten PDF
Is it safe to flatten sensitive forms online?

With DocuStitch, standard flattening runs locally in your browser session instead of requiring a third-party upload step.

Can the flattened form be edited again?

Flattening is intended to create a static copy. Keep the original file if you may need editable fields later.

Will the flattened PDF look the same?

The workflow aims to preserve the visible appearance while reducing interactive form behavior. Results depend on the source PDF.

What types of elements are flattened?

The workflow targets form fields, annotations, comments, and other interactive elements where supported.

Do I need to install any software?

No. The tool runs in modern browsers with WebAssembly support.