A free, open-source tool for creating professional HTML email signatures. No sign-up, no server, no tracking — runs entirely in your browser.

Try it live →

• Fully customizable — name, title, company, phone, email, website, logo, accent colour, social links, and disclaimer
• Live preview — see changes instantly as you type
• Light & dark mode preview — check how your signature looks in both email themes
• One-click copy — copy as rich text (paste directly into your email client) or raw HTML
• Conditional fields — blank fields are automatically hidden from the output
• Custom accent colour — match your brand with the built-in colour picker
• Social icons — LinkedIn, Twitter/X, Facebook, Instagram, and GitHub (only shown when a URL is provided)
• Customizable disclaimer — edit the text or toggle it off entirely
• Setup instructions — step-by-step guides for Outlook (new, classic, Mac), Gmail, and Apple Mail
• Zero dependencies — single HTML file, no build step, no frameworks
• Works offline — download and open locally, no internet required (except for Google Fonts and social icons)

1. Open index.html in any modern browser (or visit the live version)
2. Fill in your details — leave any field blank to hide it from the signature
3. Pick an accent colour to match your brand
4. Click Copy signature and paste into your email client
5. Follow the setup instructions for your specific email app

1. Fork this repository
2. Go to Settings → Pages
3. Set source to Deploy from a branch → main / root
4. Your signature generator will be live at https://yourusername.github.io/email-signature-generator

docker run -d -p 8080:80 ghcr.io/clarkemedia/email-signature-generator:latest

Or with Docker Compose:

git clone https://github.com/clarkemedia/email-signature-generator.git
cd email-signature-generator
docker compose up -d

Then open http://localhost:8080 in your browser.

Just serve index.html from any web server or CDN. It's a single file with no build step.

The default field values in index.html showcase the creator's details as an example. To set your own defaults, edit the value="..." attributes on the form inputs near the top of the file.

Contributions are welcome! Feel free to open an issue or submit a pull request. Some ideas:

• Additional email client instructions
• Font family selector
• Image upload / base64 encoding for logos
• Additional social platforms
• Colour theme presets
• i18n / localization

MIT — see LICENSE for details.

Created by Eoin McMahon at Clarke Media.

Social icons provided by Icons8.

If this tool saved you time, consider buying me a coffee ☕