How to use this tool
Paste your email's HTML to see its size and a guide to the common clipping threshold.
Before you begin
Email clients vary; this is an approximate size check, not a guarantee of inbox rendering.
Why keep files local?
The tool reads the input with your browser and processes it on your device. It does not send your file to a Workpico conversion API. If you share a result by copying or downloading it, you control what happens next.