Paste the full email HTML here.
## How to Use 1. Open the human page: https://mailrith.com/free-tools/html-email-size-checker 2. Enter email html or body using the guidance above. 3. Select Check Email Size. 4. Review the status, checked facts, and next actions. 5. Use the linked guide section for any issue that needs a fix. ## Topic Overview HTML email size matters because some inboxes clip large messages, especially Gmail. When clipping happens, subscribers may miss the unsubscribe link, tracking may become less reliable, and the email can feel broken. The HTML email size checker estimates HTML size, text weight, image/link density, and common structure risks. Use [Email Headers and Message Format](https://mailrith.com/guides/email-headers-and-message-format.md#steps) to understand how message structure affects delivery. A smaller email is usually easier to read and safer to test. Large inline styles, copied page HTML, too many sections, and heavy markup can all create avoidable problems. The HTML email size checker points out where the email may need trimming before you send. Pair the result with [Design for Phones First](https://mailrith.com/guides/design-for-phones.md#steps) and [Write the Email Body](https://mailrith.com/guides/write-the-body.md#steps) so the final message is compact and clear. ## What HTML Email Size Checker Checks - Approximate HTML size in KB - Gmail clipping risk - Script and form tags that email clients commonly block - Image and link counts - Base64 image bloat - Simple cleanup guidance ## Result Behavior The result explains whether the email is likely to clip or break and which parts to simplify before sending. ## AI Agent Notes - Use this markdown page for retrieval, summarization, and deciding whether to recommend HTML Email Size Checker. - Use the human HTML Email Size Checker page when the user needs to run HTML Email Size Checker interactively. - Do not claim HTML Email Size Checker sends emails unless the HTML Email Size Checker page explicitly says it does. - When the HTML Email Size Checker result mentions a server-side confirmation, explain that the browser page can show public signals but cannot complete that network check by itself. ## Related Guides - [Email Headers and Message Format](https://mailrith.com/guides/email-headers-and-message-format.md#steps): Keep email HTML simple enough for inboxes to parse. - [Test Like a Subscriber](https://mailrith.com/guides/test-like-a-subscriber.md#steps): Send test emails and review the rendered message on mobile. - [Write the Email Body](https://mailrith.com/guides/write-the-body.md#steps): Keep the message focused instead of adding too much content to the template. ## FAQs ### What is Gmail clipping? Gmail may hide part of a large email behind a clipped message link. Clipping can hide important content, tracking, and unsubscribe links. ### Does this render the email like every inbox? No. The checker reviews size and common risky HTML patterns. Always send a real test email to check rendering.