Sign PDF on iPhone
Sign 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 sign 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 Sign PDF NowHow to Sign PDF on iPhone
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1
Open ContinuePDF in Safari
On your iPhone, open Sign PDF in Safari. Tap the Share icon then "Add to Home Screen" if you want app-like access.
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2
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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3
Save back to Files
Run the tool and tap download — signed PDF is saved into the Files app (usually under Downloads).
What you can do with Sign PDF
Signing adds your actual signature to a PDF — drawn, typed, or uploaded as an image — and places it exactly where the document needs to be signed, so you can return it without printing.
Sign a contract fast
Add your signature to an agreement and send it back the same day, with no scanner or printer needed.
Handle forms remotely
Sign school, medical, or HR forms from home and email the signed copy straight back.
Initial every page
Place your initials on each page of a multi-page contract where that is required.
Reuse a saved signature
Sign recurring paperwork with a consistent, professional-looking signature every time.
Sign 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 sign 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, sign it, and save signed 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
Draw your signature slowly on a trackpad or touchscreen for a cleaner line, or upload a photo of your ink signature on white paper for the most authentic look. Size it to match the signature line rather than dropping it in oversized.
Frequently asked questions
Is a signature added this way legally valid?
In many places an electronic signature is acceptable for everyday agreements, but requirements vary by country and document type. For high-stakes legal documents, check what your jurisdiction or the other party requires.
Can I place the signature exactly where I want it?
Yes. You position and resize the signature freely, so you can drop it precisely on the signature line and add a date next to it if needed.
Is there a Sign PDF app for iPhone?
You don't need one. Sign PDF runs in Safari on your iPhone. Add your PDF from the Files app, iCloud Drive, or Photos, and save signed 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 signed 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 Sign 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 Sign PDF
Prefer a different device, browser, or setup? Sign PDF works the same everywhere.
Ready to Sign PDF?
Start using our free sign tool now — no signup required.
Open Sign PDF Tool