Runs locally No signup No watermark
Document Tool
Sign Document

Sign Document is useful when you already have a page image or scan and only need a practical signing step before sending, archiving, or sharing it. The workflow keeps the document local and adds the signature directly into the exported file.

✓ 100% Free ✓ No signup 🔒 Files stay on device
1

Upload

2

Adjust & Preview

Pixlane
Preparing the tool on your device

Pixlane is loading locally. No upload, no signup, and your files stay on your device.

Sign Document Free Online - Add Signature to PDF

Place a signature on a scanned document image and export a signed page as PDF or image with browser-based local processing.

Sign Document is useful when you already have a page image or scan and only need a practical signing step before sending, archiving, or sharing it. The workflow keeps the document local and adds the signature directly into the exported file.

How to Use It

  1. Upload your document image and wait for the local preview to load.
  2. Adjust the settings — Upload the document first, add the signature image as the second file, position the signing box, then export the signed page as PDF or image.
  3. Download the result — Download the processed file directly to your device.

Controls and Options

Upload a clean signature image, then draw the placement box directly where the signature should sit on the document.

Formats and Output

Input: document image plus signature image. Output: PDF, PNG, JPG, or WebP. PDF is useful when you want a signed document file while image outputs fit lightweight approval flows.

Frequently Asked Questions

Can I upload a signature image?

Yes. You can draw, type, or upload a photo or PNG of your signature. The upload flow can remove the paper background before placement.

Can I choose exactly where the signature goes?

Yes. After adding the signature, drag and resize it directly on the PDF page before exporting.

Is my PDF uploaded?

No. The PDF preview, signature cleanup, placement, and export all run locally in your browser.

Can I export a signed PDF?

Yes. Pixlane flattens the signature into the PDF and downloads the signed document from your device.

Are my files stored on a server?

No. All processing happens entirely in your browser. Your files never leave your device and are never uploaded to any server.

How long does processing take?

Processing runs directly in your browser. Most operations complete in under 5 seconds depending on file size.

What is the maximum file size?

The current limit is 20MB per file. Batch processing support is planned for a future update.

Does this tool work on mobile devices?

Yes. Pixlane works on any modern browser including mobile Chrome and Safari. No app download needed.

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