Fill a PDF in three steps
Open a PDF and use its existing form controls when available. Add free text, checkmarks, or a signature where needed.
- Open your PDF in Sigy.
- Fill supported fields or use the text and mark tools.
- Review every page and download the completed PDF.
What forms work?
Sigy supports common interactive text, checkbox, radio, and dropdown fields. Read-only, unusual, or unsupported fields may remain unchanged. Review the exported file before sending it.
Work with several files
You can open multiple documents, move between them, and download them individually or as a ZIP. Files remain in this browser profile until you remove them or clear site data.
Frequently asked questions
Can I fill a flat PDF?
Yes. Add text and checkmarks as page annotations when the PDF has no interactive form fields.
Will Sigy upload my form?
No. Document reading, editing, and export happen in your browser.