Sign & Fill PDF

Add a handwritten signature, text, the date, checkmarks or a stamp to a PDF and save it.

1. Choose a PDF to sign or fill in

Choose one PDF. You can see each page and place a signature or text wherever you like.

Drag and drop a PDF here

or

2. Save the PDF

Add a signature or text to save the PDF.

Everything happens on this device. Your PDF is never uploaded.

Signatures and text go into the PDF as images. This is a visible signature, not a digital signature backed by a certificate.

Draw your signature

Sign inside the box with your finger or mouse.

Color

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How to use

  1. 1. Choose a PDF

    Tap “Choose files” and pick the PDF you want to sign or fill in. A full-screen editor opens.

  2. 2. Draw and place your signature

    Tap “Signature” in the bar at the bottom and sign inside the box with your finger. Tap “Use this signature” to put it on the page, then move it to the signature line with your finger.

  3. 3. Add a date or checkmark

    Tap “Done” to bring back the bar at the bottom, then tap “Date” to put today’s date on the page. Move it to the date field with your finger and drag the bottom-right corner to fit the size. Tap “Done”, then tap “Check” and move it onto the box. “Text”, “Stamp” and the rest work the same way.

  4. 4. Download

    Tap “Save” at the top right of the editor.

Great for

  • Signing and returning an application or consent form

    No need to print, sign by hand and scan it again. Sign on your phone and send it straight back as a PDF.

    People returning paperwork

  • Filling in your name or the date on a PDF form

    Accented letters and names in any language come out right. Today’s date goes in with one button.

    People filling in applications

  • Ticking boxes and circling answers

    Put a checkmark in a box or circle the answer you chose. Circles can be stretched wide, too.

    People answering surveys and forms

  • Stamping a quote or invoice

    Make a red round stamp from a name and place it. You can also load a photo of a stamp on paper and make its white background transparent.

    People sending quotes and invoices

Good to know before you start

  • The signature you add here is only visible. It isn’t a digital signature backed by a certificate.
  • Text and signatures go into the PDF as images, so they can’t be searched or copied as text later.
  • PDFs with a password or with editing restricted can’t be written on.

Visible signatures vs. digital signatures

The signature this tool adds is a “visible signature”, just like signing paper with a pen. Your handwritten signature or stamp is turned into an image and placed on top of the page. The text and images already on the page stay as they are.

A “digital signature”, used for contracts and the like, relies on a certificate so anyone can check who signed and that nothing was changed afterwards. If a document needs a digital signature, use the service the other party asks for.

Ways to sign compared
What it isGood for
Visible signature (this tool)An image of a handwritten signature or stamp placed on the PDFReturning application forms, consent forms and internal documents
Digital signature (certificate)Proves who signed and that nothing was changedContracts and other documents that need legal certainty
Print and sign by handSign on paper, then scan or mail it backDocuments where the original is required

FAQ

Answers to common questions before you start.

Is my PDF sent anywhere?

No. The PDF is read and written inside the browser on your device, and the file is never uploaded to a server.

Can I sign with my finger on a phone?

Yes. Tap “Signature” and a full-screen box for your signature appears. Sign with your finger and tap “Use this signature” to put it on the page.

Can I add text in any language?

Yes. Text is drawn with your device’s fonts before it goes into the PDF, so accents and other scripts come out right. You can also break it into several lines.

Can I change the date format?

When you add a “Date”, today’s date goes in as “October 23, 2026”. Select the date and use “Date format” to switch to “10/23/2026” or “2026-10-23”. You can also edit the date text directly.

Can I add a stamp?

Yes. “Stamp” places a red round seal with a name in it. Change the name under “Name on the stamp”. To use your own stamp, load a photo of it on paper with “Image” and make the white background transparent.

How do I move or resize what I placed?

Drag an item to move it, and drag the bottom-right corner that appears when it’s selected to resize it. The × at the top right removes it. To place things precisely, zoom in on the page.

Can I add things to page 2 and beyond?

Yes. Go to the page with the page list or the arrows, then place your items. Pages with signatures or text show how many items they have.

Is this a digital signature (signed with a certificate)?

No. It’s a visible signature: your handwritten signature or stamp is placed on the page as an image. For contracts that need a digital signature, use the service the other party asks for.

Can I use a password-protected PDF?

No. PDFs with a password or with editing restricted can’t be written on, and you’ll see a message when you choose one.

Is my signature saved?

It isn’t saved on your device or on a server. While the page is open, you can reuse it from “Earlier signatures” on the “Signature” screen. It’s gone when you close the page.

Is it free?

Yes. No sign-up, no ads, and no watermark on the saved PDF.

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