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DOCUMENT & DATA TOOLS

Review your email HTML before sending.

Find CSS patterns that need email-client review, missing image descriptions, unsafe links, and broken template markers. Download a corrected copy with a change report.

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Files and text are processed in your browser.

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Email template reviewIllustrative workflow
CSSFlex & gridReview table fallbacks
ImagesMissing altMark decorative images
ReportHTML + notesChanges you can inspect

Static checks; not Outlook or Gmail rendering tests

WORKSPACE

HTML Email Compatibility Checker

Paste HTML or select an HTML file. No remote images or links are fetched for testing.

Active scripts, embedded objects, event handlers, and javascript links are removed from the exported copy.
Ready when you are.
ABOUT THIS TOOL

Use static checks alongside real client testing.

This checker flags common risks and performs only selected basic repairs. It does not render in Outlook or Gmail, inline styles, test delivery, or guarantee appearance. Empty alt attributes are suitable for decorative images; write meaningful descriptions for informative images. Template markers are inspected for obvious unmatched braces, not validated against a particular email platform. Input limit: 2 MB.