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How to Add a Signature in Gmail (2025 Guide)

To add a signature in Gmail: Click the gear icon → See all settings → Scroll to Signature section → Click "Create new" → Enter your signature content → Select signature defaults → Save Changes. Your signature will now appear on all new emails.

Last Updated: December 2025 5 min read

How to Add a Signature in Gmail (Desktop)

Step 1: Open Gmail Settings

  1. Open Gmail in your web browser
  2. Click the gear icon in the top-right corner
  3. Click "See all settings"
Tip: You can also access settings by typing gmail.com/settings directly in your browser.

Step 2: Find the Signature Section

  1. You'll be on the "General" tab by default
  2. Scroll down until you see the "Signature" section
  3. It's usually about halfway down the page

Step 3: Create a New Signature

  1. Click "Create new"
  2. Enter a name for your signature (e.g., "Work" or "Personal")
  3. Click "Create"

Step 4: Add Your Signature Content

In the signature editor, you can:

  • Type your signature text
  • Use the formatting toolbar to add bold, italic, colors
  • Add links by highlighting text and clicking the link icon
  • Insert images (see adding images section)

Example signature content:

John Smith
Marketing Manager | Acme Corp
john@acme.com | (555) 123-4567

Step 5: Set Signature Defaults

Below the editor, you'll see dropdown menus:

  • "For new emails use" - Select your signature
  • "On reply/forward use" - Select same or different signature

Step 6: Save Changes

  1. Scroll to the very bottom of the settings page
  2. Click "Save Changes"
  3. Your signature is now active!
Pro Tip: Send a test email to yourself to verify your signature looks correct.

How to Add a Signature in Gmail Mobile App

iPhone/iPad

  1. Open the Gmail app
  2. Tap the menu icon (☰)
  3. Scroll down and tap Settings
  4. Select your email account
  5. Tap Mobile signature (sometimes shown as Signature settings)
  6. Enable Mobile signature if prompted
  7. Enter your signature text
  8. Tap OK/Save (or go back) to apply
Note: Gmail mobile signatures are separate from desktop signatures. If you want the same signature everywhere, set up both.

Android

  1. Open the Gmail app
  2. Tap menu icon
  3. Tap Settings
  4. Select your account
  5. Tap Mobile signature
  6. Enter your signature
  7. Tap OK

How to Add Images to Your Gmail Signature

Option 1: Insert / Upload an Image

  1. In the signature editor, click the image icon
  2. Choose an image from the picker (options vary by account, but usually include Upload and/or Drive)
  3. Select the image and click Select (or Insert)
  4. Resize the image if needed
Note: Images count toward Gmail’s signature size/character limits. If you get an error, try resizing or compressing the image.

Option 2: Insert by URL (Hosted Image)

  1. Upload your image to a public hosting location (e.g., your company website)
  2. In the signature editor, click the image icon
  3. Select Web Address (URL)
  4. Paste the direct image URL
  5. Click Select
Important: Some recipients’ email clients block external images by default. Make sure your signature still looks good even if images don’t load.
Easiest Option: Use our Gmail Signature Generator to automatically handle images, formatting, and optimization.

How to Create Multiple Gmail Signatures

Gmail allows you to create multiple signatures for different purposes.

  1. Go to Settings → Signature section
  2. Click "Create new" for each signature you need
  3. Common setups:
    • "Work - Formal" for external emails
    • "Work - Internal" for team communication
    • "Personal" for non-work emails

Switching between signatures:

When composing an email, click the pen icon at the bottom of the compose window to select a different signature.

Troubleshooting Common Issues

"My signature isn't appearing"

  • Check that you selected a signature in "For new emails use"
  • Make sure you clicked "Save Changes"
  • Try refreshing Gmail

"Images aren't showing"

  • Ensure images are hosted online (not local files)
  • Check image URL is accessible
  • Keep images under 100KB for best results

"Signature looks different to recipients"

  • Different email clients render HTML differently
  • Test by sending to Gmail, Outlook, and mobile
  • Use simpler formatting for consistency

"Signature is too long"

  • Gmail has a 10,000 character limit
  • Keep signatures concise (4-6 lines ideal)
  • Avoid large images

Gmail Signature Best Practices

  1. Keep it short - 4-6 lines maximum
  2. Include essentials only - Name, title, contact, maybe one social link
  3. Use a professional photo - If including, keep it small (80-100px)
  4. Don't use too many colors - Stick to 1-2 brand colors
  5. Make links clickable - Especially email and phone
  6. Test on mobile - Ensure it looks good on small screens

Create a Professional Gmail Signature in Seconds

Skip the manual setup. Our free generator creates optimized signatures with images, icons, and perfect formatting.

Create Your Gmail Signature

Related Tutorials

How to Add a Signature in Outlook How to Add Images to Email Signatures Gmail Signature Generator