Digital Signature Zero Server TransferClient Side WASM
Sign PDF
Sign contracts, tax forms, NDAs, and agreements without printing or scanning. Draw your handwritten signature on an interactive smoothing canvas pad or upload a signature image.
Drop PDF to sign with digital handwritten signature
Draw, type, or upload your signature and place it anywhere with 100% in-browser privacy
Zero Server Transfer•Local RAM Sandbox
Execution Workflow
How to use Sign PDF in 3 steps
01
Upload PDF Document
Load the document requiring signature.
02
Draw or Upload Signature
Use touch, mouse, or stylus on the signature pad.
03
Place & Sign
Position signature on the desired page and download.
Architecture Analysis
AnTPDF vs Cloud Converters
| Capability | AnTPDF Client Studio | Legacy Cloud Services |
|---|---|---|
| Server Uploads | 0% (Local WASM) | 100% Uploaded to Cloud |
| File Size Limit | Unlimited (RAM Bound) | Capped at 15MB free |
| Daily Task Limits | Zero Paywalls | 2 tasks per day lock |
| Processing Speed | Sub Second Execution | Slow cloud queues |
| Execution Privacy | 100% In Browser RAM | Remote Cloud Server |
Documentation
Frequently Asked Questions
Yes! Your signature never leaves your local device memory.
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