Encrypt PDF on iPhone
Encrypt PDF on your iPhone straight from Safari — no App Store download, no in-app purchase, and no account. ContinuePDF works with the iOS Files app and iCloud Drive, so you can encrypt your PDF whether it's saved on your phone, in iCloud, or attached to an email. You can even add the tool to your Home Screen so it opens like a regular app.
Start Encrypt PDF NowHow to Encrypt PDF on iPhone
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1
Open ContinuePDF in Safari
On your iPhone, open Encrypt PDF in Safari. Tap the Share icon then "Add to Home Screen" if you want app-like access.
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Pick a file from Files or iCloud
Tap to add your PDF and choose from the Files app, iCloud Drive, Photos, or a recent attachment.
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Save back to Files
Run the tool and tap download — password-protected PDF is saved into the Files app (usually under Downloads).
What you can do with Encrypt PDF
Encrypting a PDF locks it with a password, so the document can only be opened by someone who knows it — protecting sensitive files when they are shared, emailed, or stored somewhere less secure.
Protect financial documents
Password-protect bank statements, tax returns, or payslips before sending them.
Secure an email attachment
Add a password so a confidential file is useless to anyone who intercepts the email.
Lock personal records
Encrypt medical results, contracts, or IDs kept on a shared or cloud drive.
Share on a need-to-know basis
Give the password only to intended recipients so others cannot open the file.
Encrypt PDF on iPhone without an app
Most iPhone PDF apps want an App Store download, then gate the useful features behind a subscription or a one-time purchase — a lot of overhead just to encrypt a single document. And each app is one more thing taking up space and asking for permissions.
ContinuePDF runs in Safari instead, so there is nothing to install. It plugs into iOS the way you'd expect: pull your PDF from the Files app, iCloud Drive, or Photos, encrypt it, and save password-protected PDF straight back to Files. Everything happens on the phone — your document is never uploaded — and adding the page to your Home Screen gives you a one-tap "app" without the App Store.
Why choose ContinuePDF
No App Store
Runs in Safari — no download and no in-app purchases.
Files & iCloud
Pull files from the Files app, iCloud Drive, or Photos.
Add to Home Screen
Save it as a Home Screen icon for one-tap, app-like access.
Stays on your iPhone
Documents are processed on-device and never uploaded.
Pro tip
Use a strong, unique password and send it to the recipient through a different channel than the file itself — for example, email the PDF but share the password by message or phone. Do not lose the password; without it, the file cannot be opened.
Frequently asked questions
What happens if I forget the password?
There is no back door — a forgotten password means the file cannot be opened. Keep the password somewhere safe, ideally in a password manager.
Does encryption protect the file everywhere?
Yes. The password requirement is part of the PDF itself, so any compliant reader on any device will ask for it before showing the contents.
Is there a Encrypt PDF app for iPhone?
You don't need one. Encrypt PDF runs in Safari on your iPhone. Add your PDF from the Files app, iCloud Drive, or Photos, and save password-protected PDF back to Files — no App Store download required. You can add it to your Home Screen for app-like access.
Where does the file save on my iPhone?
After processing, tap download and password-protected PDF is saved into the iOS Files app, typically in the Downloads folder. From there you can move it to iCloud Drive or share it to any app.
Is ContinuePDF free to use?
Yes. ContinuePDF and all of its tools, including Encrypt PDF, are free with no signup required. Because documents are processed in your browser rather than on our servers, we can offer the full feature set at no cost.
Other ways to Encrypt PDF
Prefer a different device, browser, or setup? Encrypt PDF works the same everywhere.
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Start using our free encrypt tool now — no signup required.
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