Mobile signing

Sign PDFs on phone with touch drawing

Use a phone or tablet touchscreen to draw and place a visual signature on a PDF.

Upload a PDF to signPages are rendered locally in your browser.

Sample test · 5 September 2026

Draw, move and export a test mark in a narrow viewport

At a 390 × 844 browser viewport, a mock check mark was drawn, placed on page one and exported. The downloaded six-page PDF retained the original text and added the image only to the selected page.

  1. Used a public blank W-9 PDF and a test drawing, not a person's real signature.
  2. Repeated the drag that previously caused a client-side error, then exported the repaired workflow.
  3. Reparsed the 138,876-byte download and rendered every page independently.

What this does not prove: This is desktop Chromium at a mobile-sized viewport, not a physical iPhone, Android or Safari test. It adds a visual mark, not a certificate-backed digital signature. The sample is for testing only and must not be submitted as a signed form.

Blank W-9 form used for testing (IRS)

A PDFPerch automated test, not a customer testimonial. Source files may change at their publishers. Keep your original, compare your output, and use the contact page to report problems without sending confidential documents.

Real use cases

When Sign PDF on Phone is useful

  • Add a visual signature to forms, approvals, delivery notes or client confirmations on a phone.
  • Sign a PDF while traveling without installing a heavy app.
  • Place a handwritten signature image on the exact page position before sending a copy.
  • Use a tablet stylus to create a cleaner signature for school, HR, rental or service forms.
  • Finish simple approval paperwork when you only have a mobile browser and the PDF file.
Privacy advantage

Built for private files

Useful when signing private forms on a personal phone: the visual signature and PDF are assembled in the browser.

✓ No account required for core tools✓ Browser-local processing where stated✓ Download a new copy and keep your original safe

Illustrative scenarios

Ways to use Sign PDF on Phone

Sign while away from the office

A manager receives a PDF approval form on their phone. They draw a visual signature with touch, place it on the signature line, download the signed copy and send it back without installing an app.

Rental or school form

A parent or tenant needs to sign a simple form quickly. The mobile signature page lets them place a handwritten signature image, then verify the result before sharing the signed PDF.

Step-by-step

How to finish this task safely

  1. 01Open the page on your phone or tablet and upload the PDF.
  2. 02Draw your signature on the canvas using your finger or stylus.
  3. 03Drag the signature onto the preview and resize it to fit the signature line.
  4. 04Export the signed PDF and verify the placement before sharing.
  5. 05If touch placement feels difficult, rotate the phone sideways or use a tablet/desktop for the final adjustment.

FAQ

Common questions about Sign PDF on Phone

Is this a legal digital signature?

This creates a visual handwritten signature on the PDF. Regulated digital signatures may require certificates and a compliant signing provider.

Does it work on mobile browsers?

The signature pad is designed for touch, but very old mobile browsers may have weaker file and canvas support.

Is the PDF uploaded for signing?

No. The visual signature placement and PDF export happen locally in the browser.

Can I resize or move the signature?

Yes. Place the saved signature on the preview, then adjust its position and size before exporting.

Will my drawn signature be stored online?

No. The signature image is created in the browser. Avoid sharing the signed PDF until you verify the final placement.

What if the signing page is sideways?

Rotate the PDF first, or use the rotate tool before placing the signature so the signature line is easier to align.

Open the main Sign PDF tool

Built for one clear task

Use the same tested core engine with guidance and defaults tailored to this workflow. Review the result before submitting, printing or sharing an important document.

How to use Sign PDF on Phone

  1. 01. Choose your files and keep the browser tab open.
  2. 02. Use the visible controls to set order, page choices, quality or signature position.
  3. 03. Start processing. Local tools do not upload your document bytes.
  4. 04. Download the result, reopen it, and confirm page count, clarity and layout.
Core processing runs in this browser unless a page explicitly says otherwise.