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How to Fix Gmail 102KB Layout Clipping in Gmail Web (Desktop)
for Klaviyo Campaigns

A programmatic integration guide for resolving email rendering crashes inside Gmail Web (Desktop) using Klaviyo's layout editor environment.

Root Bug Analysis

Gmail automatically clips any email template whose raw HTML payload size exceeds exactly 102KB. When clipped, the email cuts off abruptly and appends a '[Message clipped] View entire message' link.

Active rendering engine: Goog/WebKit Layout Engine

Klaviyo Specific Guide

Klaviyo embeds detailed tracking and conversion anchors. This adds 10-15KB of tags to the final HTML payload, triggering Gmail clipping. You must run layouts through a tree-shaking parser.

Integration Step:

Open your Klaviyo template editor. Drag an 'HTML' block directly into your layout timeline (do not use a standard text box). Clear the default skeleton content inside the Klaviyo markup editor and paste the RenderOps corrected inline code.

ESP Unsubscribe Alignment

When compiling custom HTML templates for Klaviyo, you must ensure your layout retains deliverability compliance loops. Klaviyo requires you to insert their specific unsubscribe merge tag, otherwise your campaign delivery will be flagged by automated spam audits.

Klaviyo Unsubscribe Tag:{% unsubscribe %}

Documented Client Behavior

Expected layout behavior based on target rendering engine specifications:

Documented behavior: Gmail Web strips message body content and appends warning links if HTML payload exceeds 102KB. Tree-shaking and CSS minification are required.

Interactive Klaviyo Custom Sandbox

Target Environment: Gmail Web (Desktop)

Auto-compile fixes inside RenderOps Workspace

Load layout code directly into our Vaporize Minifier to compile responsive table frameworks that display cleanly in Gmail Web (Desktop).

Launch Vaporize Minifier

Fix Gmail 102KB Layout Clipping on Other clients for Klaviyo