Is this a legally binding digital signature?

PageFlow adds a visible electronic signature (an image of a signature), not a certificate-based digital signature. Legal enforceability depends on your jurisdiction and use case — review this yourself for important documents.

Where are saved signatures stored?

Only in your browser storage, if you explicitly opt in. They are never uploaded.

Will signing invalidate an existing digital signature on the document?

If the PDF already carries a certificate-based digital signature, editing it — including adding your signature — will likely invalidate that existing signature. PageFlow warns you before this happens.

Sign PDF Online in Your Browser

How sign pdf works

Choose a PDF file using the uploader above, or drag it in.
Use the thumbnail rail and contextual panel to set up sign PDF.
Review the result in the page preview before exporting.
Export — PageFlow builds a new file locally and downloads it to your device.

What this tool changes

Adds a visible signature image and, optionally, a date or printed name to the pages you choose.

What it preserves

All existing page content underneath the signature.

Good to know

This adds a visible electronic signature. It is not a certificate-based digital signature, and it does not verify identity or cryptographically seal the document.

Frequently asked questions

Is this a legally binding digital signature?: PageFlow adds a visible electronic signature (an image of a signature), not a certificate-based digital signature. Legal enforceability depends on your jurisdiction and use case — review this yourself for important documents.
Where are saved signatures stored?: Only in your browser storage, if you explicitly opt in. They are never uploaded.
Will signing invalidate an existing digital signature on the document?: If the PDF already carries a certificate-based digital signature, editing it — including adding your signature — will likely invalidate that existing signature. PageFlow warns you before this happens.