How to Create an Electronic Signature Online
An electronic signature is a digital image of your handwritten signature used to sign documents, contracts, and forms online. You can create one for free without Adobe Sign, DocuSign, or any subscription service. This guide shows three methods: drawing your signature with a mouse or touchscreen, typing it in a script font, and uploading a photo of your written signature.
Quick Answer
An electronic signature is a digital image of your handwritten signature used to sign documents, contracts, and forms online. You can create one for free without Adobe Sign, DocuSign, or any subscription service.
Try it now — free, no signup
Your images stay on your device. Nothing is uploaded to any server.
Step-by-Step Guide
4 steps · takes under 1 minute
Choose your method
Open the E-Signature tool and choose Draw (mouse or touchscreen), Type (select from 5 script fonts), or Upload (photo of handwritten signature). Draw is the most natural — use a stylus on a tablet for the best result.
Refine your signature
If drawing, try a few times until the stroke looks natural. If typing, cycle through the font options to find the one that looks most like your handwriting.
Download as transparent PNG
Download the signature as a transparent PNG. The background is removed automatically so it can be overlaid on any document or form.
Embed in a PDF or document
Open the Sign PDF tool, upload your document, click 'Upload Image Signature', place it on the signature line, and download the signed PDF.
100% Private — Zero Uploads
ImgToolkit runs entirely in your browser using the Canvas API. Your images are never sent to a server, never stored in the cloud, and never seen by anyone else. This makes it safe for sensitive documents, client work, medical imagery, and confidential screenshots.
Pro tip
Use 75–85% quality for web images — you get 60–80% smaller files with no visible difference at normal screen sizes.
Format & File Size Comparison
Same 1080×1080px photo processed four ways
| Format | Quality | File Size | Notes |
|---|---|---|---|
| PNG (original) | Perfect | 4.2 MB | No compression — too large for web |
| Compressed PNG | Visually identical | 1.1 MB | −74% — transparency preserved |
| JPG (85% quality) | Excellent | 310 KB | −93% · Best for photos |
| WebP (85%)BEST | Excellent | 205 KB | −95% · Recommended for web |
Based on a 1080×1080px photo. Results vary by image content and complexity.
Related Free Tools
All tools run in your browser — no account or upload needed
Frequently Asked Questions
4 questions answered
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Free, instant — your files stay on your device. Always.
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