Updated 7 Nov 2026 · Checked against Hilsio content index · By Hilsio team
Short answer
When a signature fails after paste—too long, images missing, blurry logos, or logos sent as attachments—start here. Each guide names the client and links to the install guide or generator.
TOOL
Fix AI / ChatGPT signaturesPaste AI HTML, see what breaks, rebuild with tables and hosted images.
Updated 7 Nov 2026
Gmail (web)
Gmail says your signature is too long: how to fix itGmail shows “The signature is too long” when a signature goes over Gmail’s limit of 10,000 characters. Google says image
Updated 7 Nov 2026
Gmail (web)
Email signature images not showing: fixes for Outlook, Gmail and iPhoneSignature images usually fail when the image is embedded instead of hosted, stored somewhere private (like Google Drive
Updated 7 Nov 2026
New Outlook
Outlook signature not showing: how to fix itStart by confirming which Outlook you use and that the right signature is set as default for new messages and for replie
Updated 7 Nov 2026
Classic Outlook
Email signature images sent as attachmentsWhen a logo arrives as an attachment instead of inline, the image was usually embedded (pasted from disk, base64, or VML
Updated 7 Nov 2026
Outlook
Email signature looks blurry: how to fix itBlurry logos are usually undersized files scaled up in the signature, or resized by dragging in Outlook. Export at twice
Updated 7 Nov 2026
Client updates, roaming sync, or a changed default signature are the usual causes. Check defaults in your mail app, update Outlook if images vanished after May 2026, and rebuild with hosted images if Gmail says the signature is too long.
If the HTML came from ChatGPT, Canva, or Word, paste it into the AI fixer or rebuild in the generator so tables and hosted images match what Gmail and Outlook expect.
Free signatures include one small “Created with Hilsio” text link.