YAML Studio — Editor & Viewer

A free offline YAML syntax-highlighted editor, viewer and converter.

YAML Studio is a fast, beautiful editor for YAML — built for developers, DevOps engineers and anyone who works with config files on their phone or tablet.

Write and fix YAML with a real code editor: syntax highlighting, line numbers, live linting that pinpoints the exact line of an error, auto-indent and tab support. Then reformat, compact or convert your document in a single tap.

EDITOR

- Syntax-highlighted editor with line numbers and a smart caret
- Live linting — errors show the exact line and reason as you type
- Auto-indent, tab / shift-tab, and configurable indent (2, 4, tab)
- Find in document, word wrap, adjustable font size
- Open .yaml / .yml / .json / .txt files and edit them directly

FORMAT & TRANSFORM

- Format: clean, re-indent and normalize your YAML
- Compact: collapse to flow style
- Document Tree: explore your data as a collapsible outline
- Templates: docker-compose, GitHub Actions, Kubernetes, OpenAPI, Ansible and more

CONVERT

- YAML to JSON and JSON (minified)
- YAML to TOML, .properties and .env

MAKE IT YOURS

Beautiful editor themes: Cobalt, Paper, Midnight, Nord — plus Solarized, Dracula and Neon
Code fonts including JetBrains Mono, Source Code Pro, Fira Code and IBM Plex Mono
Save documents locally and reopen them anytime
Export or share your file, or copy any conversion to the clipboard
English and Spanish, light and dark

Everything runs on-device. Your documents never leave your phone.