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Fill & Flatten PDF Forms (Free, Private, No Upload)

Complete interactive forms and lock in your answers without relying on external servers. Everything stays in your browser, ensuring sensitive data is protected.

  1. Click Choose PDF and open the form.
  2. Fill in the required fields.
  3. Press Flatten & Save to download the finalized PDF.

Related tools: Page Numbers, Watermark, Protect PDF

FAQ

What does flattening mean?

Flattening turns form fields into regular page content so they can’t be edited.

Is my form uploaded?

No, the entire process runs in your browser.

Can I save a version with editable fields?

Yes, download before flattening to keep fields editable.

Does it support signatures?

You can draw or insert images as signatures before flattening.

Will flattening reduce file size?

Usually slightly, but compression mainly depends on content.