Openly
ExtensionTools
Overview
Free viewer for Markdown, Mermaid and JSON files: folder tree, search, TOC, math, diagrams, collapsible JSON, dark mode.
Read Markdown files as clean, formatted pages right in your browser. Free, no account, no ads, no tracking. • Opens .md files from your computer or the web, plus .mmd / .mermaid diagrams • Open a folder and switch files from the sidebar • Ctrl+K to search every file in the folder • Table of contents, light / dark theme • Code highlighting, math, Mermaid diagrams, task lists, alerts • Auto refresh while you edit Readmark only displays your files. It never changes or uploads them. To open local files: chrome://extensions → Readmark → Details → "Allow access to file URLs".
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Details
- Version1.1.0
- UpdatedOctober 5, 2026
- Offered byNguyễn Đức
- Size1.81MiB
- Languages7 languages
- Developer
Email
nguyenminhduc230903@gmail.com - Non-traderThis 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.
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