Email Signature Compatibility Checker
Analyze signature HTML and find compatibility and safety problems. The tool opens a relevant preset, and every setting remains editable.
Template
Identity
Contact
Logo and photo
A local image may be blocked by some email clients. A public HTTPS image URL gives the best compatibility.
Social links
Appearance
Order and saved projects
Signature preview
After copying, open your email signature settings, paste the signature and send a test message to yourself.
HTML code
Plain text
Disclaimer generator
Choose a template, edit it and add it to your signature.
Generator vCard
The tool uses the details from your signature. Download a ready contact file.
Compatibility checker
Paste signature HTML. It is analyzed as text and no code is executed.
Issues
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Warnings
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Passed checks
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Instructions
Choose a layout
Start with the prepared preset.
Enter details
Remove any fields you do not need.
Check the result
Use the preview and compatibility checker.
Copy
Paste the signature and send a test email.
Limitations
Email clients interpret HTML differently. Images should use a public HTTPS URL, and the installed signature should be tested on desktop and mobile.
Does the tool upload my details?
No, all processing is local.
Can I change the preset?
Yes, every field and color remains editable.