Gmail Signature Setup 2026: Guide with Logo and Image
Set up a professional Gmail signature with logo and image. Step by step for desktop and mobile app.
Setting up a Gmail signature takes less than five minutes and instantly makes every email look more professional. Here is how to set up a clean Gmail signature with logo, image and proper mobile handling.
Why you need a Gmail signature
A good signature does more than show your name. It shows your role, your channels and ideally your logo. That builds trust, saves follow-up questions and makes replies easier. In Germany, business emails also need the legal fields under Section 37a HGB.
Set up a Gmail signature step by step
- Open Gmail in your browser and click the gear icon top right.
- Choose "See all settings".
- Under the "General" tab scroll down to "Signature".
- Click "Create new" and give it a name like Default or Team.
- Enter name, role, phone, web address and any legal fields.
- Set the signature as default for new emails and replies.
- Scroll to the bottom and click "Save changes".
Your signature will appear under every email automatically. Tip: use one font, no more than two colors, and keep the signature to four to six lines.
Add a logo or image
Gmail supports images directly in the editor. Three reliable ways:
- Upload: upload the logo from your computer.
- By URL: insert via a public image URL.
- Drag and drop: drop the image into the signature field.
Use PNG with transparent background, ideally 120 to 200 pixels wide. Larger logos look heavy on mobile.
Gmail signature on mobile
The Gmail mobile app keeps its own signature, separate from desktop. Match both designs so recipients see a consistent identity. Images in the mobile signature are not supported in the app, so a clean text signature is enough.
Common mistakes
- Too many colors: stick to two
- Huge image: prefer small and sharp
- Long disclaimers: include legal fields but keep them tight
- No mobile test: always check on a phone
Faster with a generator
If you don't want to fight with HTML and pixel sizes, use a generator. signaturly creates your signature in 2 minutes, you copy it and paste it into Gmail.
Conclusion
A Gmail signature is easy to set up once you stick to a few design rules. Fewer colors, smaller logo, clear structure. If you want to skip the work, a tool like signaturly handles the design for you.