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PDF JavaScript Remover

Make a PDF safer to share and open. The remover scans the file for active content – document-level JavaScript, actions that run when the file opens, scripted links and buttons, launch actions that start other programs and event actions on pages, fields and annotations – removes it, and verifies the cleaned file contains none. Ordinary web links and the visible content stay as they are.

  • Files stay on your device
  • No sign-up
  • Free to use

How to use PDF JavaScript Remover

  1. Drop the PDF onto the page.
  2. Review the active content found.
  3. Click “Remove scripts and actions”.
  4. Download the verified clean file.

PDF JavaScript Remover features

Scan first

Counts scripts, automatic and launch actions.

Thorough

Document scripts, open actions, links, buttons, events.

Launch actions

Removed – they can start programs.

Verification

The output is scanned again.

Content kept

Text, images, web links and form submission stay.

Local

The file never leaves your device.

When to use PDF JavaScript Remover

  • Sanitising PDFs received from unknown senders.
  • Publishing forms without scripts.
  • Meeting security policies for document exchange.
  • Removing auto-print or auto-open behaviour.

PDF JavaScript Remover FAQ

Why do PDFs contain JavaScript?

Interactive forms use it for calculations and validation; some documents use it to print or navigate automatically. It has also been used to exploit vulnerable readers.

What exactly is removed?

The JavaScript name tree, open actions that run scripts or launch programs, JavaScript and launch actions on links, buttons and fields, and all additional-action (event) entries.

Will my form still work?

Fields can still be filled, but calculations, formatting and validation done by scripts stop working.

Does this make any PDF safe?

It removes the most common active content. It does not scan embedded files or check images for exploits; keep your PDF reader up to date.

Are web links removed?

No. Normal links to web pages and form submission stay.

Is my PDF uploaded?

No. Processing happens in your browser.

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Active content in PDF files

PDF supports actions: instructions that run when something happens. A document can run JavaScript when it opens, when a page is shown, when a field changes or when a link is clicked; launch actions can ask the reader to start another program. These features power interactive forms, but they are also a classic attack surface.

The remover first reads the structure with qpdf and counts what it finds, so you know what the file contained. Cleaning is done with pdf-lib: the document’s JavaScript name tree is deleted, open actions that run scripts or launch programs are removed, actions of those kinds are taken off links, buttons and fields, every additional-actions entry is deleted, and the script and launch action objects themselves are neutralised.

The cleaned file is scanned again, and the result tells you whether anything remains. Web links, which are URI actions, and form submission are not executable code and are kept, so the document still works as expected.

Removing scripts is a strong hardening step, especially for files from unknown sources, but a current, patched PDF reader remains the most important defence.

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