Telescopo: Markdown & Diagrams

View, Summarize, Export PDFs

Only for Mac

Free · In‑App Purchases

Mac

The definitive viewer for Markdown, Diagrams, and Code Files, with Adaptive Navigation, PDF Export, AI Summarization, Dynamic Themes, Fonts, Code Syntax Highlighting. Telescopo is the fastest, most beautiful Markdown and diagram viewer on macOS. Start free with a powerful native Markdown viewer, clean rendering, local and remote images, light and dark themes, adaptive chapter navigation, tabbed windows, and a stunning interface. The Markdown reader your Mac deserves. Need more power? Telescopo Pro is a one-time purchase. No subscriptions. Own it forever. Pro unlocks the full Telescopo experience, every format, every feature, no limits: - Mermaid diagrams and LaTeX math rendered inline inside Markdown - 70+ file formats including SVG, JSON, XML, CSV, ePub, PDF, and 40+ code languages with full syntax highlighting - Universal AI summarization across every file type using Apple Intelligence (M1+, macOS 26+) - Universal PDF export and print in landscape and portrait, any document, any format - Adaptive chapter navigation across every format, including code files - Six handcrafted themes including the animated Cyberpunk, Bad Command, and Cyberspace themes powered by Apple Metal - Full syntax highlight theming with adjustable inline code support If Markdown and diagrams are part of your daily work, Telescopo is the cleanest, most powerful viewer on Mac.

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v5.1.0 - Telescopo’s Markdown engine is now even more capable and standards-friendly, with support for custom heading IDs, wiki-link syntax, definition lists, and admonition callouts. (opening localfiles linked inside of Markdown is not yet supported), fixes for other aspects of Markdown reported - Heading anchors were improved for reliability: GitHub-style slug behavior is more consistent, custom IDs are respected, and duplicate IDs are automatically uniquified to prevent broken in-page navigation. - Markdown rendering security was hardened with stronger HTML sanitization and safer link handling, reducing risk from unsafe embedded content while keeping normal Markdown behavior intact. - Checklist/task-list rendering was polished so task items display cleanly and consistently in the reader. - Markdown's in-line Mermaid and LaTeX viewer behavior received stability improvements and better handling - The reader toolbar was redesigned to be cleaner, slimmer, and less intrusive while preserving core quick actions (navigation, search, AI summary, zoom, theme/font/syntax access). - Reader toolbar interaction polish was improved, including better tooltip behavior and more consistent icon sizing/spacing. - The main/welcome window was overhauled with a cleaner layout focused on opening files and continuing from recent files. - Recent-files flow was improved for a smoother resume experience, can show up to 25 recent files, and fully supports drag-and-drop actions for files. You may drag and drop onto the Telescopo app, or in the main screen directly.- Support for macOS 14 has been officially removed

The developer, Bad Command AI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    • Seller
      • BAD COMMAND AI, LLC
    • Size
      • 12.7 MB
    • Category
      • Developer Tools
    • Compatibility
      Requires macOS 15.0 or later.
      • Mac
        Requires macOS 15.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • In-App Purchases
      Yes
    • Copyright
      • © 2026 Telescopo