How to sign a PDF online without uploading it anywhere
Draw, type or upload a signature and place it on any page — all in your browser.
Signing a PDF usually means uploading a sensitive document to some website you have never heard of. There is a better way: sign it entirely in your browser, so the file never leaves your device.
Why in-browser signing matters
Contracts and agreements are exactly the kind of document you should not be uploading to a random server. CorePDF processes files locally in your browser — nothing is uploaded — so your documents stay private.
Three ways to add your signature
Pick whichever is fastest for you:
- Draw it with your mouse, trackpad or finger
- Type your name and choose a cursive font
- Upload an image of your existing signature
Place it and export
Drag your signature onto the right page, resize it, and export a clean PDF. You can add a date, initials or a watermark in the same editor.
FAQ
Are my files uploaded when I sign a PDF?+
No. CorePDF signs documents in your browser, so the file never leaves your device.
Can I draw or type my signature?+
Both — draw it, type it in a cursive font, or upload an image, then place and resize it on any page.
Sign a PDF privately
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