How to sign a JPG online (free, no upload)

Sign a JPG in three steps

1. 01

   Open the JPG in the free signer

   Choose the image file (up to 25 MB) or drag it in. It loads locally and is converted on your device into a one-page PDF at the image's own size.

2. 02

   Place your signature

   Draw, type, or photograph your signature and drag it onto the document. Zoom in for precise placement on photographed pages.

3. 03

   Download the signed PDF

   The output is a flattened PDF, the standard format recipients expect for signed documents, saved straight to your device.

Why the output is a PDF, not a JPG

A signed document should be hard to edit and easy to open anywhere, and that's PDF's job: the signature is flattened into the page, page size is fixed, and every device renders it identically. Editing a JPG's pixels directly would invite quality loss and silent modification, wrapping it in a PDF keeps the source image intact underneath your signature.

If the JPG is a photo of a paper page, take it straight-on in decent light before signing: the sharper the source, the more professional the signed PDF looks.

Frequently asked questions

Is my JPG uploaded when I sign it?

No. The image is opened, wrapped into a PDF, and signed by code running in your browser, verifiable in the DevTools Network tab, or by going offline after the page loads. The signed file saves locally.

Can I sign a photo taken with my phone?

Yes, that's the most common case. Open the photo in the signer on the same phone, place your signature, and download the signed PDF. A straight-on, well-lit shot gives the cleanest result.

What if I have several JPG pages?

Each image becomes a single-page PDF, so sign and download them one at a time, or combine the photos into one PDF first with any local tool, then sign the multi-page PDF in one pass.