Tramilisto

Sign a PDF on your phone with your finger

Open the PDF you were sent, sign with your finger on the screen and download it signed. Right in your phone's browser, no app to install.

1 · Document

2 · Your signature

3 · Optional text

4 · Place it and download

  1. Load the PDF and create your signature

    Draw it, type it in a handwriting font or upload a photo. You can also create your initials.

  2. Drag it into place

    Move it over the page and resize it from the corner. Add it to as many pages as you need.

  3. Download the signed PDF

    The signature is added on top of the original document. The text and page quality don't change.

Simple electronic signature. You place an image of your signature on the PDF. That's often enough for private documents between individuals and businesses, if the other party accepts it. It isn't a certificate-based digital signature, which many official procedures require. See the difference.
Everything runs in your browser. Your document and signature are never uploaded to any server.

How to sign a PDF from your phone

  1. Open this page in your phone's browser (Chrome, Safari, Samsung Internet…).
  2. Tap the box above and choose the PDF. If it came by email or WhatsApp, save it to Files or Downloads first.
  3. Sign with your finger in the box. If you don't like it, tap Clear and try again.
  4. Tap Add signature, drag it into place with your finger and resize it from the corner.
  5. Tap Download signed PDF. You'll find it in Downloads or Files.

Tips for signing well with your finger

  • Turn your phone sideways: the signature box gets wider and the stroke feels more natural.
  • Sign slowly. The stroke is smoothed automatically, so your hand doesn't need to be perfect.
  • If you have a stylus, use it: the thickness responds to pressure.
  • To move the signature on the page, drag it with one finger. The rest of the page scrolls normally.
  • If it just won't come out right, try Type: your name in a handwriting font.

Private by design

Most online tools upload your files to their servers. Not here: everything is processed in your own browser and nothing is ever sent anywhere. That's why you can safely use it with your ID, passport, payslips, medical reports or contracts.

Where the signed PDF ends up

On Android it usually goes to the Downloads folder. On iPhone, Safari asks what to do with the file and saves it to Files › Downloads. From there you can send it by email or WhatsApp.

None of this goes through our servers: the PDF is read and signed right in your phone's browser.

Signing on your phone and official procedures

This is a simple electronic signature. If you need to sign an official procedure from your phone, you'll normally use the government's own app or portal, or your digital certificate (in Spain, Cl@ve or your certificate on the sede electrónica). We explain the difference.

More about signing PDFs

Frequently asked questions

Are my files uploaded to a server?

No. Everything is processed inside your browser. Your files never leave your device.

Is it free?

Yes. No sign-up, no watermark and no usage limits.

Do I need to install an app to sign a PDF on my phone?

No. It works in the browser on Android and iPhone. You just need the PDF saved on your phone.

Can I move the signature with my finger?

Yes. Drag it to move it and use the blue corner to resize it. If you touch outside the signature, the page scrolls normally.

Can I add several signatures or sign several pages?

Yes. Move between pages with the arrows and add as many signatures, initials and text boxes as you need. "Add to every page" copies the selected item to all pages.

The PDF doesn't show up when I choose a file. What do I do?

If it came by WhatsApp or email, save it to your phone first (Downloads on Android, Files on iPhone) and choose it again.

More tools