Sign PDF
Drop in a signature or stamp image and drag it exactly where you want. Everything stays on your device.
Drop a PDF here
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About this tool
Sign a PDF for Free
You received a lease agreement, an NDA, or a permission slip and need to sign it before sending back. You do not have a printer, you do not have a scanner, and you are not paying Adobe $20/month for the privilege of putting your name on a page.
KuroPDF lets you sign PDFs directly in your browser — for free, with no account, and without ever uploading the document. Draw your signature with a mouse or finger, type it in a handwriting font, or upload a photo of your real signature. Then drag it to the exact position on the page and download the signed PDF.
This is not a "fill and sign" service that stores your documents in someone else cloud. Everything processes locally. Your contract, your signature, and the final output all stay on your device. Period.
Electronic signatures created this way are legally recognized in most jurisdictions under the US ESIGN Act (2000), EU eIDAS Regulation (2014), and equivalent laws in Canada, Australia, India, and most other countries. For simple agreements like leases, NDAs, consent forms, and internal documents, a drawn or typed signature is legally binding.
Sign PDF on iPhone
Use the sign pdf tool directly in your iPhone browser - no app to install, no storage wasted.
Everything runs locally on your iPhone. Your files stay on your device at all times.
Sign PDF on Android
Use the sign pdf tool directly in your Android browser - no app to install, no storage wasted.
Everything runs locally on your Android. Your files stay on your device at all times.
Frequently asked questions
Is this legally binding?
Yes. Electronic signatures are legally recognized in most jurisdictions under laws like ESIGN (US), eIDAS (EU), and equivalent legislation worldwide. For simple agreements (leases, NDAs, consent forms), a drawn or typed signature holds the same legal weight as a wet ink signature.
Can I use my real handwritten signature?
Yes — photograph your signature on white paper, upload the image, and the tool removes the background automatically. Position it anywhere on the document.
Do I need to create an account?
No. No account, no email, no sign-up. Open the tool, sign your document, and close the tab.
Is my signed document uploaded anywhere?
Everything runs locally in your browser using WebAssembly. Because no data is uploaded to a cloud server, your files remain strictly private, and the entire process generates zero server carbon emissions, making it highly eco-friendly.
Can I sign multiple pages?
Yes — place your signature on any page of the document. You can also add date stamps, initials, and text annotations alongside your signature.
How is this different from DocuSign or Adobe Sign?
DocuSign and Adobe Sign are workflow tools for sending documents to multiple signers with tracking and audit trails. KuroPDF is for the simpler case: you have a PDF, you need to put your signature on it, and you want it done in 10 seconds without paying or creating an account. For multi-party signing with audit trails, those paid services are more appropriate.
Does this work on iPhone?
Yes - KuroPDF works in any modern browser on iPhone. No app download required.
Is it private?
Everything runs locally in your browser using WebAssembly. Because no data is uploaded to a cloud server, your files remain strictly private, and the entire process generates zero server carbon emissions, making it highly eco-friendly.
Does this work on Android?
Yes - KuroPDF works in any modern browser on Android. No app download required.
Does this work on Mac?
Yes - KuroPDF works in any modern browser on Mac. No app download required.
Does this work on Chromebook?
Yes - KuroPDF works in any modern browser on Chromebook. No app download required.
Does this work on iPad?
Yes - KuroPDF works in any modern browser on iPad. No app download required.
Does this work on Windows?
Yes - KuroPDF works in any modern browser on Windows. No app download required.
How do I sign a PDF?
Open the tool, drop your file, adjust any settings, and click the action button. The result downloads to your device instantly.
Are my files uploaded?
Everything runs locally in your browser using WebAssembly. Because no data is uploaded to a cloud server, your files remain strictly private, and the entire process generates zero server carbon emissions, making it highly eco-friendly.