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Protect PDF

Password-protect a PDF and set print, copy, and edit permissions — free in your browser, no upload.

Your files stay on your device.

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Sound familiar?

When you Google “Protect PDF”…

  • Your private files on someone else’s server.

    You have to upload the whole file, even when you only need a small change.

  • Ads to watch. Credits to buy.

    You finish the steps, then find out you have to pay or watch an ad to get your file.

  • “This format isn’t supported.”

    You find a converter, but it cannot open the file you actually have.

  • Too many buttons. No clear next step.

    A complicated interface turns a simple file task into something you have to learn.

  • A bad result. Another search.

    The tool crashes or the result is wrong. Now you have to start again somewhere else.

SO MANY issues with traditional file converters

Convert your files privatelyWith our all in one tool

No more looking for a different tool for each file format. No more going back to Google for another tool.

And no more ads!

Convert multiple files at a time

Add your files to one queue and convert them together. Less repetition, more time back.

Convert images

Turn HEIC into JPG, PNG into WebP, and more. Choose the format your next app needs.

Crop, resize and rotate images

Get the framing, dimensions and orientation you need without opening another app.

Convert videos

Convert MP4, MOV, MKV and more. Choose video quality and resolution for the job.

Convert or extract audio

Convert WAV, FLAC and other audio formats, or save the audio from a video as MP3.

Convert documents

Convert Markdown, DOCX, EPUB and more. Export documents to PDF or other supported formats.

Compress and edit PDFs

Reduce PDF file size, merge documents, split pages, add page numbers and more.

Make your files smaller

Adjust image quality, video resolution or audio bitrate to reduce file size. Results depend on the file and settings.

And much more!

Add a password to your PDF without uploading it to a server.

6,576 desktop conversionsView all conversions

Internet is needed for activation and the first download of each conversion engine. Once downloaded, engines are kept for offline use.

One app. One payment.

All desktop tools, with no subscription.

  • 6,576 supported file conversions. See all conversions
  • Images, PDFs, documents, audio and video — plus image and PDF editing in one app.
  • Windows, macOS and Linux. See system requirements
  • Batch conversions: convert multiple files in one queue.
  • No daily conversion limit or per-file credits.
  • All future updates and major upgrades included.
  • Use on 3 computers. Connect once to activate, then work offline without an expiration date.
  • Get help with your specific file requirements.
  • Support independent development.
$20
Applicable taxes are calculated at checkout.The web tools stay free.

Frequently asked questions

Can I use Protect PDF in the desktop app?

Add a password to your PDF without uploading it to a server.

Is the website free?

Yes. Use the web tools for free, with one file at a time in Convert and a 50 MB limit per file. Some formats require the desktop app.

Do my files leave my device?

No. Conversion and editing happen on your device. Your files are not uploaded.

Can I use the desktop app offline?

Use on 3 computers. Connect once to activate, then work offline without an expiration date. Internet is needed for activation and the first download of each conversion engine. Once downloaded, engines are kept for offline use.

Where can I find my license key?

Find your key in your purchase receipt or customer portal.

Which file formats can I convert?

ConvertPeach Desktop supports 6,576 distinct conversion pairs across images, PDFs, documents, audio and video. Browse the catalog to check your exact input and output formats before buying. Same-format exports are not included in this count. See all conversions

Can I convert multiple files at once?

Yes. Add multiple files to the desktop conversion queue and process them together. The free web converter handles one file at a time; individual editing tools have their own workflows.

Are conversions unlimited? Is there a file-size limit?

There is no daily conversion quota and no per-file credit charge. That does not mean unlimited file size: desktop limits depend on the tool, file type, available memory and storage. Document conversions accept inputs up to 64 MiB. Web tools have a 50 MB limit per file.

Does my purchase include future updates?

Yes. Your one-time purchase includes all future ConvertPeach Desktop updates and major upgrades released for the app, with no upgrade fee. Downloading updates needs internet. Specific new features and release dates are not guaranteed.

What are the desktop system requirements?

Installers are available for Windows x64 with Microsoft WebView2, macOS 13 or later on Apple Silicon or Intel, and Linux x64 or ARM64 as DEB and RPM packages. Linux targets include Ubuntu 22.04+ and Debian 12; compatibility varies by distribution. Windows setup may need internet to install WebView2. Contact support if you need to confirm your OS version before buying.

Can I use the app for commercial work or on several computers?

Yes. Your license covers your own personal and commercial work on up to three computers. Deactivate an old computer before moving its activation when possible. License keys cannot be shared or resold.

Can you help with a specific file or an unsupported format?

For conversion problems and format requests, use our public GitHub support repository. Include your input format, desired output and any error message. Do not post license keys or private files. We can investigate problems and consider requests, but cannot guarantee every file can be converted or every request will be added. Support · Request a format

For billing, licensing, or private files, email support@convertpeach.com.

Is this a subscription? How do I get the app after buying?

No. Pay $20 once, plus applicable taxes shown at checkout. After payment is confirmed, sign in with your purchase email to download the app and find your license key. Activation and the first download of any needed conversion engine require internet.

Password-protect a PDF so readers need a password to open it, with optional limits on printing, copying, editing, forms, and comments.

Set an open password, an optional owner (admin) password for changing security settings, then download the protected file — all in your browser.

How to password-protect a PDF

  1. Drop a PDF into ConvertPeach.
  2. Enter an open password (required to encrypt the file).
  3. Optionally set a different owner password and toggle reader permissions.
  4. Download the protected PDF.

Why protect PDFs with ConvertPeach

Emailing an open PDF is easy to forward. An open password raises the bar for casual access without installing desktop software or sending the file to a cloud converter.

Your document and passwords stay on your device. The tool is free and needs no account.

When to protect a PDF

  • Sharing contracts, offer letters, or payroll summaries
  • Sending drafts that should not be casually opened on a shared machine
  • Limiting printing or editing as a soft deterrent
  • Packaging a final packet before you archive or hand it off

Open vs owner password

The open password is required to open the file. The owner (admin) password can change security settings later. If you leave the owner password blank, it defaults to the same value as the open password.

Permission options

You can allow or disallow printing, copying text, modifying the document, filling forms, and commenting. Treat these as a deterrent: some PDF readers ignore permission settings even when a password is present.

Tips

Extremely large files may take longer or fail in a memory-limited browser tab. Always store your passwords somewhere safe — ConvertPeach cannot recover a forgotten password.

Frequently asked questions

What is the admin password?

The owner password can change security settings. Leave it blank to reuse the open password.

Will every PDF reader enforce permissions?

No. Some readers ignore permission settings. Rely on the open password for access control; treat other limits as a soft deterrent.

Can I remove the password later?

Yes, if you still know the password — use Unlock PDF on ConvertPeach to download a copy you are authorized to open.

Are my files uploaded?

No. Protection runs entirely in your browser on ConvertPeach — free, with no account required.