ToolKitSphereSign PDF
Files never leave your browserDraw, type, or upload a signature and place it anywhere on a PDF.
Drop a file here, or click to upload
Single file
Upload a PDF and add your signature
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Sign a PDF document by drawing your signature with a mouse or touchscreen, typing it in a script font, or uploading a signature image — then place and resize it on the page you choose.
Features
- 100% Client-Side Processing: Sign PDF runs entirely in your browser for absolute privacy.
- Zero File Uploads: Your documents never touch external servers or third-party storage.
- High-Quality Output: Preserves original layout, typography, and image resolution.
- Cross-Platform: Compatible with Windows, macOS, Linux, Android, and iOS.
- No Registration Required: Free unlimited usage with no credit card or account needed.
Why use this sign pdf?
- Process sensitive financial, legal, and medical documents with peace of mind.
- Instant workflow execution with zero server processing delay.
- No watermark added to your output files.
- Simple and clean user interface designed for efficiency.
Frequently asked questions
Is my file uploaded when using Sign PDF?
No. All operations for Sign PDF take place locally in your web browser. No files are uploaded to our servers.
Is Sign PDF free to use?
Yes, Sign PDF is 100% free with unlimited usage and no hidden fees or account registration.
Does Sign PDF work on mobile devices?
Yes! You can use Sign PDF on smartphone and tablet browsers without installing any mobile app.