Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of One-Click Gmail PDF Signer

One-Click Gmail PDF Signer by EasyMuse!

Sign PDF attachments directly in Gmail — no downloads, no third-party uploads. Draw or upload your signature, place it anywhere, and download or reply with the signed PDF in seconds.

0 (0 reviews)0 (0 reviews)
Download Firefox and get the extension
Download file

Extension Metadata

Screenshots
Open any PDF attachment in Gmail — the viewer loads instantly with page navigation, zoom, and signing tools in the toolbar.Draw your signature with a mouse or trackpad, then click "Use this" to save and place it on the document.Place your signature anywhere on the page, then choose to download the signed PDF or attach it directly to a new email, a reply, or a reply-all — without leaving Gmail.
About this extension
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.
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for mail.google.com

Optional permissions:

  • Access your data for mail.google.com

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Support Email
Version
1.4
Size
2.39 MB
Last updated
11 days ago (Feb 27, 2026)
Related Categories
  • Download Management
  • Privacy & Security
  • Social & Communication
License
All Rights Reserved
Version History
  • See all versions
Tags
  • download
  • google
  • privacy
  • security
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Browsers

  • Desktop
  • Mobile
  • Enterprise

Products

  • Browsers
  • VPN
  • Relay
  • Monitor
  • Pocket
  • Bluesky (@firefox.com)
  • Instagram (Firefox)
  • YouTube (firefoxchannel)
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.