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Preview for Gmail & Chat: HTML, Markdown, JSON

ExtensionDeveloper Tools17 users
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Item media 1 (screenshot) for Preview for Gmail & Chat: HTML, Markdown, JSON
Item media 1 (screenshot) for Preview for Gmail & Chat: HTML, Markdown, JSON
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Overview

Preview HTML, Markdown, and JSON attachments from Gmail and Google Chat, and save any preview as a PDF.

Tired of your inbox showing HTML attachments as raw source code? This extension renders HTML, Markdown, and JSON attachments the way they're meant to look — in a clean, full-screen viewer — without downloading them or leaving your inbox. • Web pages are rendered exactly as designed, in a secure sandbox. • Markdown documents are formatted with headings, tables, code blocks, and links. • JSON data opens as an interactive, collapsible tree with search, a raw-text toggle, and one-click copy. Common variants of these formats are supported too. • Print what you are reading, or save it as a PDF containing just the document — no mail-client furniture around it, and named after the file itself. How it works: Hover any supported attachment — in Google Chat, an open Gmail message, or your inbox list — and click the eye icon that appears. The file opens in a full-screen preview, ready to read, print or save. Press Esc or click Close to dismiss. Private and secure by design: • No accounts, no servers, no analytics, no tracking — nothing ever leaves your browser. • Files are rendered inside an isolated sandbox with no access to your Google account or session. • The extension only ever talks to Google's own file endpoints to fetch the file you chose to preview.

Details

  • Version
    1.1.1
  • Updated
    August 23, 2026
  • Offered by
    Northwind Studio
  • Size
    49.6KiB
  • Languages
    English
  • Developer
    Email
    appmaestro2023@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

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The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes

Support

For help with questions, suggestions, or problems, please open this page on your desktop browser

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