How to sign a PDF on your phone without an app

Any phone with a modern browser can sign a PDF, no app store required. Open the free signer, load the PDF, draw your signature with your finger, and download the signed file. It runs entirely in the browser, so the document is never uploaded to a server.

Last verified: July 17, 2026

Sign a PDF free, no upload

Sign a PDF on any phone in four steps

  1. 1

    Save the PDF to your phone

    Download the attachment from your email or messaging app so there's a local copy, iPhones save to Files, Android phones to Downloads.

  2. 2

    Open the signer in your browser

    Safari, Chrome, or anything modern. Tap Choose file and pick the PDF, it loads on the phone; nothing is sent anywhere.

  3. 3

    Draw your signature

    Zoom in and sign with your finger, pick a typed handwriting style, or photograph your signature from paper. Drag it into position and resize.

  4. 4

    Download and send back

    The signed, flattened PDF saves to your downloads. Attach it to your reply from there, done, usually in under a minute.

Phone specifics worth knowing

  • iPhone or Android? There's a guide for each

    The flow is the same everywhere, but file handling differs: iPhones use the Files app and the Share sheet, Android uses the Downloads folder and file picker. The device-specific guides cover the exact taps.

  • Why no app is the feature

    Signing one document doesn't justify an install, an account, and app permissions. A web page does the job and disappears when you close the tab, and unlike most web PDF tools, this one never uploads your document either.

  • Poor signal? Not a problem

    Once the page has loaded, signing needs no connection, it works in airplane mode. Useful exactly when you're signing from a phone in the first place.

Frequently asked questions

Do I need to install anything to sign a PDF on my phone?
No. The signer is a web page: open it in your phone's browser, load the PDF, sign, and download. No app store, no account, no email address.
Is signing on a phone as good as on a computer?
For most documents, yes, zoom in before drawing and finger signatures come out clean, or use a typed handwriting style for perfect neatness. Multi-page PDFs, initials, and dates all work the same as on desktop.
Does my document get uploaded when I sign from my phone?
No. The PDF is processed by the browser on your phone and the signed copy saves locally. You can prove it to yourself: load the page, switch to airplane mode, and the entire signing flow still works.

Sign on another device

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Sign a PDF free, no upload
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