7-day full-feature trial: Reader, Editor, and Split views with Markdown, code, SVG, search, zoom, themes, templates, export, and AI Assistant.
Continue after the trial: choose Monthly Access, Annual Access, or Lifetime Access in the Mac App Store purchase window.
The Context-Switching Tax
A typical developer's or designer's workflow on macOS involves reading several different file types throughout a day. A Markdown README. A Python script. An SVG icon. A YAML configuration file. An architecture document with embedded Mermaid diagrams. Each of these requires a different viewer: Quick Look for a partial preview, a browser for rendered Markdown, Figma for the SVG, a text editor for the YAML, and something else for the diagram-heavy document.
Every context switch has a cost. A different app has a different interface, different keyboard shortcuts, different zoom controls, and a different visual style. The cumulative friction is not large per switch, but it accumulates across a full day and pulls focus away from the actual content you are trying to understand.
What Telescopo Unifies
Telescopo is built around a single principle: one app should handle the structured files a developer or technical professional needs to read and create. The 7-day trial includes the complete workflow from reading through writing, editing, exporting, and asking questions about a document.
Markdown
Native reading with Mermaid, LaTeX, and Quick Section Navigator
Source Code
70+ languages with syntax highlighting
SVG
Infinite zoom with hardware acceleration
Consistent Keyboard Shortcuts Across Every Format
In Telescopo, the shortcuts for zooming, adjusting width, switching themes, and exporting work identically whether you are reading a Python file, a Markdown document, or an SVG. There is no mode-switching and no format-specific interface to learn. The keyboard shortcuts you learn on day one work on every file you open on day one hundred.
How Telescopo Compares to Preview
macOS Preview handles images, PDFs, and some basic document formats well. What it does not do is render Markdown, apply syntax highlighting to source code, render Mermaid diagrams, or provide Telescopo Navigator. For the file types that Preview handles, it is a solid tool. For the file types that developers and designers work with daily, it is not designed for the task.
Telescopo focuses precisely on the formats that Preview misses. It is not trying to replace Preview for viewing PDFs or raster images. It is filling the gap for structured text, vector graphics, and code, and doing so with a native, hardware-accelerated rendering pipeline that feels as fast as Preview does for the things it handles well.
Setting Telescopo as Your Default Viewer
You can set Telescopo as the default application for Markdown, code, and SVG files in Finder. Right-click any file of the type you want to reassign, select Get Info, expand the Open With section, choose Telescopo, and click Change All. From that point forward, double-clicking any file of that type opens it directly in Telescopo without a manual app launch.
Frequently Asked Questions
Can Telescopo replace macOS Preview for viewing code, Markdown, and SVG files?
Yes. Telescopo Markdown Studio is designed as one native workspace for Markdown, structured text, vector graphics, source code, editing, export, templates, AI Assistant, Live Monitoring, Mermaid, LaTeX, and Navigator workflows.
What file types does Telescopo support?
Telescopo Markdown Studio supports Markdown, code, SVG, structured files, Mermaid, LaTeX, PDF export, AI Assistant, templates, and rich authoring workflows in one native workspace.
