Free · Private · No upload

Mask content in PDF online

Cover ordinary PDF content with a movable, resizable color mask and review the result live before export.

PDF to masked PDF in three steps

The visual Mask tool creates an opaque rectangle for layout clean-up and presentation changes. It is not certified redaction and should not be used to remove sensitive hidden content.

  1. Choose your PDF file

    Drop it into the tool or browse from your device.

  2. Review your settings

    Choose the options available for this conversion.

  3. Download the masked PDF

    Keep the result in your workspace or download it immediately.

Common questions

Is this PDF to masked PDF converter free?

Yes. The local converter is available without an account or per-file charge.

Are my files uploaded?

No. Supported conversions run locally on your device using browser APIs and WebAssembly.

Will complex formatting look identical?

Text and document structure are preserved where possible. PDFs use layout-aware reconstruction and automatic local OCR for scanned pages, though very unusual fonts or visual layouts can still differ.