One-Click Gmail PDF Signer 作者： EasyMuse!

Sign PDF attachments directly in Gmail — no downloads, no third-party uploads, no account needed.

How it works:
1. Open any email with a PDF attachment in Gmail
2. Click the ✏️ Sign PDF button next to the attachment
3. Draw or upload your signature, then drag it anywhere on the document
4. Download the signed PDF or attach it directly to a reply

Features:
- Draw your signature with a mouse or trackpad
- Upload an image as a signature (PNG, JPG, etc.)
- Paste an image from clipboard
- Save signatures for reuse across sessions
- Place multiple signatures on any page
- Stamp a signature to all pages at once
- Resize and reposition signatures freely
- Undo (Cmd+Z) support
- Multi-page PDF support with page navigation and zoom
- Attach the signed PDF to a new email, a reply, or a reply-all — without leaving Gmail

Your PDF never leaves your browser. Everything is processed locally.