Telescopo
Markdown & diagrams viewer
Mac
Version 4.1.1
macOS 14.6 or later
12.7 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
•
4 ratings
Phillip Rearick
Feb 13, 2026
App version: 4.1.1
Bottom bar is hard to see and the app doesn’t seem to solve any problem that isn’t solved in other apps and is missing details that about the content it is displaying. Apps that focus on specific formats, like Marked for markdown, are much better at displaying them and giving useful functionality. Trying to pull every format together and reducing functionality isn’t very helpful.
RPSM
Feb 13, 2026
App version: 4.1.1
The UX is very difficult to read, the transparent bar at the bottom is impossible to see, it’s a distraction from the text. To get support you need to create an account and sign it — too much trouble in 2025, I don’t want another account to have to remember and manage. The problem is not with Tahoe or liquid glass, though I’m sure that makes it worse. The problem is with the toolbar itself, especially on a dark color scheme for the documents (or any that matches the system’s color scheme). The location of the bar at the bottom, and the subtlety of its design, makes it very difficult to use. You can see it clearly in the screenshots, the toolbar is difficult to read, and as you scroll through documents, more so. There is no contrast, and this was done on purpose. For an app that is essentially about viewing, it should focus on visibility and not coolness.
Pål Brønlund
Feb 13, 2026
App version: 4.1.1
It seemed really promising and I was looking for a Markdown viewer, but the app can't even display numbered lists correctly. Numbered lists!
Response from Developer
Feb 13, 2026
Thank you for your feedback, could you please open a support request at telescopo.ai/support with a markdown snippet or file if possible that we can test with. We will investigate and address this ASAP so the fix can be applied to the next update.
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Telescopo
Markdown & diagrams viewer