How to sign a PDF on your phone
Got a contract or form that needs your signature? Instead of printing, signing and scanning it, you can sign it right on your phone in a minute.
Filezain’s Sign PDF works inside your browser, so neither your document nor your signature is uploaded anywhere.
When you need it
- Signing a rental or work contract and sending it straight away.
- Signing an application form or declaration.
- Adding your signature and today’s date to a document.
- Signing several pages of the same file.
Steps
- Open Sign PDF and choose your file.
- Tap “Create signature” and choose: draw with your finger, type your name, or upload a picture of your signature.
- Tap “Use this signature” and it appears on the page.
- Drag it into place and resize it with the corner handle.
- To add it to other pages, move with the page arrows and tap “Add signature to this page”, then save.
Tips
- Draw large and slowly in the box, then shrink it on the page for a cleaner look.
- When uploading a photo, sign on white paper, photograph it and keep “Remove white background” on.
- “Add text” lets you put the date or your name next to the signature.
- You can choose black or blue ink.
Common problems and fixes
- The file won’t open.
- If it’s password-protected, remove the password first with Unlock PDF.
- The signature landed in a different place after saving.
- Check you placed it on the right page — the page number is shown above the preview.
- The uploaded signature has a grey background.
- Photograph it in good light on white paper, with background removal on.
- The page scrolls when I try to draw.
- Draw inside the signature box only; it’s built to stop the page from scrolling.
Frequently asked questions
Is this a certified electronic signature?
The tool places an image of your signature on the document, which is accepted for many everyday uses. A certificate-based digital signature requires a trust service provider.
Is my signature stored on the site?
No, it only exists in your open page and disappears when you close it.
Does it work on an iPhone?
Yes, drawing with your finger is designed for touch.
Can I sign several pages?
Yes, move between pages and add the signature to each one.