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.
Pixlane adds a visual signature to the document. It does not create a certificate-based cryptographic digital signature or a PDF /ByteRange signature.
How to Use It
- Upload your document image and wait for the local preview to load.
- 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.
- 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: PDF, JPG, PNG, or WebP document plus a signature image. Output: PDF, PNG, or JPG. PDF keeps multi-page document workflows together; image input exports remain available as images.
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 supported media workflows 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?
Supported media processing runs on your device, and file contents are not uploaded for processing. Site analytics and the assistant are separate.
How long does processing take?
Processing runs directly in your browser. Completion time varies with the operation, file size, browser, and device.
What is the maximum file size?
There is no server upload limit because processing stays on this device. Very large files can still be constrained by available browser and device memory.
Does this tool work on mobile devices?
Pixlane runs in supported browsers on desktop and mobile; availability varies by required APIs. No app download is needed.