Free · Private · In your browser

Sign PDFLite

Draw your signature and embed it. This is not a PKCS digital certificate signature.

Drop your files here, or click to browse
Processed on your device — nothing is uploaded

How your files are handled

We built these tools so you never have to wonder where your documents go. Here is exactly what happens when you use them.

  • Your files are processed entirely in your browser using open-source libraries (pdf-lib, PDF.js, and others).
  • Nothing is uploaded to our servers. We have no backend that receives, stores, or scans your documents.
  • We cannot see, store, or access your files — not during processing, not after, not ever.
  • Processing uses your device's memory and CPU. Large files may take longer, especially on phones and tablets.
  • All tools are free with no paywall tricks, no hourly task limits, and no watermarks on your output files.

How it works

Three simple steps. Your files never leave your device, and the result downloads straight to your computer or phone.

Frequently asked questions

Common questions about privacy, pricing, and how these tools work.

More edit tools

Other free PDF utilities that work the same way — private, in-browser, no sign-up.

How to sign PDF

Sign PDF adds a handwritten-style signature to a document. Draw, type, or upload your signature once, then place it exactly where it is needed.

  1. Add your PDF; it loads on your device with nothing sent to a server.
  2. Create your signature by drawing it, typing your name, or uploading an image.
  3. Click on the page to place the signature, then drag or resize it to fit.
  4. Click Sign & Download to preview and save the signed PDF.

Good to know: Visual signature — not a cryptographic (PKCS) digital signature.

Everything happens in your browser — your file is never uploaded, and there is no sign-up, watermark, or limit.

Frequently asked questions

Are my files uploaded to a server?

No. Every tool runs entirely in your browser using open-source libraries, so your file is processed on your own device and is never uploaded. We have no backend that receives, stores, or scans your documents.

Is it really free, and will there be a watermark?

Yes. There is no account, no sign-up, and no hourly limit, and the tools never add a watermark to your output. UnboundPDF is free and is not affiliated with Adobe.

Does it work on a phone or tablet?

Yes. The tools run in any modern mobile browser as well as on desktop. Because the work uses your device's own memory and processor, very large files simply take longer on phones.

Is this a legally binding digital signature?

It adds a visual signature image to the page, which suits most everyday agreements. It is not a cryptographic (PKCS #7) digital certificate signature, so it does not carry that kind of tamper-evidence.

Can I reuse the same signature in more than one spot?

Yes. Once created, you can place your signature on any page and resize each placement independently.