Telescopo
Markdown & diagrams viewer
Mac
Version 5.1.0
macOS 15.0 or later
13.5 MB
1 languages
Instead of switching between multiple apps or websites for reading Markdown, Mermaid, LaTeX, or SVGs — get one fast, unified viewer that handles it all with consistent gestures and keyboard shortcuts. Telescopo features macOS native support for ePub, PDF, CSV, JSON, YAML, and 70+ additional formats and growing. It’s fast, keeps your files private, and helps you focus on the content, not the tools. Ideal for anyone who deals with documents, code, or diagrams — students, writers, researchers, developers, and others.
View Markdown, Mermaid, LaTeX, SVG & more
Export PDF & print Markdown and diagrams
Search and navigate chapters seamlessly
Get on-device AI summaries
Telescopo features
View multiple file types
Open Markdown, Mermaid, LaTeX, SVG, ePub, PDF, plain text, code files (Swift, Python, JavaScript, Java, C/C++, Go, Rust, HTML/CSS, YAML, and 40+ others), JSON, XML, CSV, and more — all in one app. Every format is rendered cleanly, so you don’t need separate apps for different file types.
Navigate long documents easily
Jump between chapters, sections, pages, or code functions instantly. Dynamic highlighting, smart scrolling, and keyboard shortcuts make even very long documents easy to browse.
Summarize Markdown with on-device AI
Turn long Markdown documents into concise summaries using Apple Intelligence, without sending your data online. This saves time when reviewing notes, documentation, or research.
Render diagrams and SVGs perfectly
See complex diagrams (Mermaid, LaTeX with MathJax) and SVG graphics with native, vector-perfect quality. Infinite zoom and smooth transitions make it easy to inspect any detail.
Export Markdown & diagrams to PDF
Create professional PDFs directly from Markdown with theme-aware styling and polished typography. No need to switch to another app to share or print your documents. PDF Export is supported for Markdown with complex in-line Mermaid, Mermaid, and LaTex with MathJax.
Customize your reading experience
Choose from six handcrafted themes, adjust fonts, and set independent themes per tab. Light, dark, retro, cyberpunk — you can make each document feel exactly how you want it.
Ratings and reviews
Telescopo
•
24 ratings
Jochen Häberle
Mar 1, 2026
App version: 5.1.0
Nice! I was hoping for a quicklook preview, but the app does not offer one unfortunately. For the present agentic workflows, where AI agents constantly spit oz Markdown, the possibility to quickly just paste some Markdown into the app would be very useful!
Darren Peterson
Feb 26, 2026
App version: 5.0.1
Great So far - Makes reading these docs super easy!
Ted M. Young
Feb 21, 2026
App version: 4.1.1
Tried it out with a few files and its display was worse than Finder’s quick preview. Immediate uninstall.
Response from Developer
Feb 22, 2026
We appreciate the feedback, a new update will be coming out this week that significantly overhauls the experience. We hope you will check it out!
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Telescopo
Markdown & diagrams viewer