Email HTML size checker
Paste your email HTML. Get the rendered size in KB, Gmail clip warning (102 KB limit), count of external images, and a breakdown of what's eating your budget.
Gmail truncates any email whose HTML is larger than 102 KB and shows a 'View entire message' link. Your tracking pixel, unsubscribe link, and footer hide behind a click. Open rates drop. Deliverability erodes. And the email still ships.
Size creeps up quietly, 40 KB from base64-inlined images, 12 KB from repeated inline styles, 6 KB from VML button fallbacks, 8 KB from unminified whitespace. This checker measures rendered size and calls out the biggest contributors so you can cut before send.
This is one pre-flight check. Draftship runs 35 of them, live, in the editor.
Subject length, spam triggers, contrast ratios, Gmail clipping, alt text, undeclared variables, CAN-SPAM footers. All audited as you build. Open the editor and ship an email that passes every check.