Email HTML Previewer

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Frequently asked questions

Is this pixel-perfect for Gmail or Outlook?

No. This tool shows a safe browser preview. Actual rendering varies by client, device, and settings.

Is my HTML stored on your servers?

No. Processing happens in your browser unless you choose to import into Memo.ly.

Can I edit the HTML visually?

Import into Memo.ly to edit in the design studio or preserve as an HTML block.

About this tool

Paste or upload email HTML and preview it in a sandboxed iframe on desktop, tablet, and mobile widths. See size stats, link counts, and common HTML warnings before you send.

How to use Email HTML Previewer

1. Paste your HTML or upload an .html file.
2. Review the live preview and toggle width, zoom, and overlay guides.
3. Check the stats panel for size, links, images, and clipping risk.
4. Copy, download, or import into Memo.ly when ready.

What it checks or simulates

• HTML size and approximate Gmail clipping risk
• Link, image, and button counts
• Missing image sources and remote URLs
• Unsupported CSS patterns and script tags
• Alt-text coverage summary

Best practices

• Preview at 320px and 600px widths.
• Keep HTML under 102 KB to reduce Gmail clipping.
• Use hosted images with width attributes.

Learn more

• How export works
• Understand preflight
• Free HTML previewer

Disclaimer

Email HTML Previewer provides practical guidance and simulation only. Memo.ly does not send email, guarantee inbox placement, certify accessibility or legal compliance, or promise pixel-perfect rendering in every email client.

• Preview is a browser simulation - not pixel-perfect email client rendering.
• Does not test inbox placement, spam scoring, or deliverability.
• Scripts are stripped for safety; behavior may differ from your ESP.