Free Online PDF Editor & Document Annotation Suite
Edit, stamp, sign, and annotate PDF documents directly in your web browser. Visual drag-and-drop studio with official company seals, signatures, and instant export.
How to use:
- Open Document in Editor: Select or drop your PDF document to launch the visual studio workspace.
- Add Stamps, Signatures & Text: Drag and drop company seals, GSTIN stamps, digital signatures, dates, or custom text boxes.
- Export Finalized PDF: Download your signed and finalized vector PDF with razor-sharp 300+ DPI quality.
Frequently Asked Questions:
Can I add a signature to my PDF?
Yes! You can draw a signature with your mouse or finger, type your name in signature fonts, or upload a photo of your paper signature.
Is it completely free with no watermark?
Yes! PdfDio does not insert watermarks and does not require an account or credit card.
Are my confidential documents uploaded to a server?
No. PdfDio runs entirely in client-side JavaScript, ensuring complete confidentiality for NDAs and contracts.