Email HTML Size Checker

Measure HTML KB size and warn about Gmail clipping (~102KB).

How it works

Will Gmail clip this email?

Paste HTML → click Check HTML size → see KB size vs Gmail’s ~102KB clip threshold.

Or start from a real-life example

Results appear here after you click Check HTML size.

Ready to send with MailShrine?

New accounts get free signup credits. Fix the copy, then send from MailShrine.