Sign a PDF on your device
Open the editor to draw, type, or upload a signature and place it on any page. For contracts, sign then flatten so forms cannot be edited. Everything stays in your browser.
Related tools Flatten PDF · Compress PDF · Merge PDF
Draw, type, or upload a signature and place it on any page — powered by the InstantPDFEdit editor. Files stay in your browser.
1. Open editor to signContracts: sign → flatten → download
- Sign in the editor — export auto-locks when a signature is present (or turn on “Flatten & lock on export” in Settings for fillable forms).
- Flatten & lock so forms/annotations can't be edited — the editor auto-locks when you export a signature, or use Flatten & lock (or the Flatten chip after export).
- Download the locked PDF — ready to send.
Soft limits for browser stability: prefer under 20 MB and ~50 pages (harder past ~80 MB / 200 pages). 100% local — nothing uploaded.
Questions
How do I sign a PDF here?
Open the editor from this page, add your PDF, create a signature (draw, type, or upload), place it, then export. Export can flatten and lock when a signature is present.
Is signing the same as DocuSign?
No. This is a free visual signature on the PDF in your browser. It is not a paid e-sign workflow with identity checks or audit trails.
Are my files uploaded?
No. Signing runs locally. Your PDF stays on your device.
Should I flatten after signing?
For contracts, yes — flatten and lock so form fields and annotations are harder to change. Use Flatten after export if needed.
Can I request someone else to sign?
Use Request signature for a simple pack you can email. It is not a hosted signing portal.