HEIC photos are fine
iPhone cameras save HEIC by default. If you photograph your signature and pick it from your library, PureSign can read it, so you do not need to convert anything first.
Sign a PDF on Your iPhone
No app to install. Open this page in Safari, pick the PDF from Files, sign with your finger, and save the signed copy back to your phone.
Drop your PDF here
or click to browse
PDF up to 10 MB
Private by design. Your PDF is processed on your device and never uploaded.
How to sign a PDF on an iPhone
- 01
Save the PDF to Files
From Mail or Messages, tap the PDF, then the Share button, then Save to Files. The signer picks files through the Files picker, so the PDF has to be saved there first.
- 02
Open the PDF in the tool above
Tap the upload area and choose Browse. Select the PDF from Files. It opens on your phone and is not uploaded.
- 03
Add your signature
Choose Draw signature and sign with a finger. The drawing area fills the screen. You can also take a photo of a paper signature, or choose one from your photo library.
- 04
Place it and download
Drag the signature onto the line with your finger, drag the corner handles to size it, then tap download. Safari saves the signed PDF to Files, in Downloads by default.
Things that are specific to iPhone
Rotate to landscape for drawing
A wide signature is easier to draw with the phone on its side. The drawing area follows the rotation without losing the strokes you already made.
Apple Pencil on iPad
On an iPad, the Draw tool reads Apple Pencil pressure, so strokes thicken as you press.
Sharing the result
After download, open the file in Files and use Share to send it by mail, Messages, or another app.
If something does not work
The PDF will not open
A file still stored only in iCloud can fail to read. Open it once in Files so it downloads fully, then try again. If it asks for a password, remove that first.
The signature lands in the wrong place
Drag the box by its centre to move it. The corner handles resize it and the rotate handle turns it, so you can fix its position after placing it.
Nothing happens on download
Safari asks before saving. Tap Download in the prompt, then look in the Downloads list in Safari or in Files.
Frequently asked questions
Can I sign a PDF on iPhone without an app?
Yes. PureSign runs in Safari. Open the tool, pick the PDF from Files, add your signature, and download the signed copy.
Where does the signed PDF go?
Safari saves downloads to the Files app, in the Downloads folder unless you changed the setting. From there you can share or move it.
How do I get a PDF from Mail into the signer?
Open the attachment, tap Share, and choose Save to Files. Then open this page and pick the file from Files.
Does it work on iPad?
Yes. The layout is wider and the handles work with touch and Apple Pencil.
Is my document uploaded?
No. Your PDF is read and signed inside your browser tab and is never uploaded to our servers, whether you are a guest or signed in. The only file we ever store is a signature you choose to save to your vault after signing in.
Can I sign a PDF with more than one page?
Guests and free accounts can sign single-page PDFs, up to 10 MB. Multi-page signing is part of the Pro plan, which also raises the PDF limit to 100 MB. If your file has several pages and you only need one signed, split out that page first.
Related
Sign a PDF on Android
Sign from Chrome with your finger or a photo of your signature. No app to install.
Add signature to PDF
Place a signature, initials, a date, or a check mark exactly where a PDF needs one.
How to photograph your signature
A checklist for the photo, plus the cause and fix for common problems.
Sign a PDF without printing
Skip the print, sign, scan loop and return a clean PDF with its text intact.