cosmovex~/cosmovex/home.md · rendered with Markdown Editor & MD Viewer
A Markdown editor good enough to write its own homepage.
This page is a Markdown document. You're reading the rendered preview — press or hit if you don't believe it. That round trip — plain text in, a clean document out — is what Markdown Editor & MD Viewer does on your Android phone. Free, offline, no account.
# Two cursors, one document My phone is hosting this file over Wi-Fi, and my desktop is editing this line r > nothing leaves the device — it's your Wi-Fi, your file
## New in v1.5 — watch it work
## The rest of the toolkit
One app per job. No 200 MB do-everything bloat.
| App | Job | Rating | |
|---|---|---|---|
 Markdown Editor & MD Viewer | Write and preview Markdown on mobile. | 4.7★ · 5K+ | installios |
 WebEva: Build Websites & Code | Build websites from your phone. | 4.4★ · 5K+ | installios |
 PDF Viewer & Editor - AI | Edit, convert & sign PDFs on mobile. | 4.9★ · 1K+ | installios |
 HTML Viewer & Editor - Code | View & edit HTML on mobile. | 4.6★ · 1K+ | installios |
 SQLite Editor & SQL Learner | Manage SQLite databases on mobile. | 5.0★ · 1K+ | install |
 Python IDE - Offline Compiler | Write and run Python on your phone. | 4.1★ · 1K+ | install |
 DevBuddy: Offline Dev Toolkit | Your pocket developer toolkit. | — | installios |
 ShellPilot - Batch SSH Client | SSH terminal & SFTP on the go. | — · 1K+ | installios |
 API Client -REST & HTTP Tester | Test APIs anywhere, anytime. | — · 500+ | installios |
 JSON Editor - Viewer & Format | View, edit & format JSON instantly. | — · 500+ | installios |
 Java & Kotlin Compiler IDE | Write and run Java on your phone. | 4.4★ · 1K+ | install |
 XML Viewer & Editor | View, edit & validate XML on mobile. | — · 5K+ | installios |
 Open CSV — Viewer & Editor | Open and edit CSV files on mobile. | — · 500+ | installios |
 JavaScript Editor — React IDE | Run JavaScript and React on your phone. | — · 1K+ | install |
 Image to SVG Converter, Viewer | Convert images to SVG and edit vectors on mobile. | — · 1K+ | install |
 YAML / YML Viewer & Editor | View, edit & validate YAML instantly. | — · 500+ | install |
 Network Toolkit: WiFi IP Tools | Network utilities and diagnostic tools. | — · 500+ | install |
 Code Editor - Text & Notepad | Edit text files on mobile. | — · 500+ | install |
 C / C++ Compiler IDE | Compile & run C and C++ on your phone. | — | install |
 Diagram Maker: Flow & ERD | Draw flowcharts & ERDs on mobile. | — | install |
 QR Scanner & Generator | Scan codes with confidence | — | install |
 Zip Extractor — Unzip RAR 7Z | Open ZIP, RAR, and 7Z files | — | install |
 PromptCrate: AI Prompt Manager | Your personal AI prompt library | — | install |
 Markdown & MD: Notes, AI | AI markdown workspace with Mermaid & GitHub sync. | — | install |
## Free web tools
Background RemoverSnapglowJSON FormatterYAML FormatterXML FormatterCSV FormatterSQL FormatterMarkdown PreviewBase64JWT Decoderall tools →
## Questions, answered
Is there a free Markdown editor for Android?
Yes — Markdown Editor & MD Viewer is free on Google Play. It gives you a split-view editor with live preview, syntax highlighting, and HTML/PDF export, and it works fully offline with no account.
Can I edit Markdown from my phone on a desktop browser?
Markdown Editor & MD Viewer includes a Live Server: your phone hosts the document over Wi-Fi and you edit it from any desktop browser with two-way live sync. The file never leaves your device.
Can I make Mermaid diagrams on Android?
Yes — the built-in Mermaid Studio turns plain text into flowcharts, sequence and class diagrams, with pan/zoom and SVG export, right on your phone.
Can I turn Markdown into slides or a PDF on my phone?
Presentation Mode turns any Markdown document into a fullscreen slide deck, and export produces styled HTML or print-ready PDF — all generated on-device.
## From the journal
- How to Manage Linux Servers Remotely with an SSH Terminal on AndroidTutorial
- SQLite Editor for Android: Manage Databases and Learn SQL on the GoTechnology
- I Cut My AI Coding Costs by 60% With This One Weird Trick (It's Not Clickbait, I Promise)Technology
We're a small studio with one rule: each app does a single job well, works offline, and never asks who you are.
## Stay in the loop
© 2026 Cosmovex — EOF