YAML / YML Viewer & Editor

1.1.0

CosmoVex

0.00

0 reviews

1,000+
Downloads

Free

Edit YAML & YML files offline. Validate, format, convert to JSON or XML.

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1,000+ downloads

About YAML / YML Viewer & Editor

YAML / YML Viewer & Editor is a tools app developed by CosmoVex.

Download Statistics

YAML / YML Viewer & Editor has been downloaded 1.3 thousand times. In the last 30 days, the app was downloaded 380 times.

User Ratings

The app has no ratings yet.

App Information

YAML / YML Viewer & Editor is FREE to download. The APK download size is 23.34 MB. The latest version available is 1.1.0. The last update was on August 19, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play May 2026.

Description

A dedicated YAML and YML editor for Android. View, edit, validate, format, and convert .yaml and .yml files on your phone or tablet — fully offline, on-device.

Most editors on Google Play treat YAML as plain text. This one is built around YAML: real syntax highlighting, real indentation handling, real validation that catches the mistakes that break a build at 2am.

WHAT YOU CAN DO

- Open any .yaml or .yml file from Downloads, Drive, OneDrive, Dropbox, or local storage
- Edit YAML / YML with syntax highlighting tuned for dark mode
- Validate documents and see exactly which line and column failed
- Auto-format and re-indent messy files with one tap
- Browse a tree preview that mirrors the document structure
- Convert YAML / YML to JSON or XML, and back the other way
- Save with the extension you want — choose .yaml or .yml on every export
- Save anywhere through the system SaveAs dialog (Downloads, Drive, OneDrive, etc.)
- Work fully offline. No file ever leaves your device.

REAL USE CASES

- Edit a GitHub Actions workflow on the train and push it from your phone
- Tweak a docker-compose.yml when a service will not come up
- Patch a Kubernetes deployment.yaml from a pager rotation
- Fix an OpenAPI 3.0 spec a teammate sent over Slack
- Open application.yml or config.yaml from a Spring Boot project
- Inspect a .gitlab-ci.yml or .circleci/config.yml on the go

BUNDLED TEMPLATES

- OpenAPI 3.0 starter (.yaml)
- GitHub Actions Flutter CI (.yml)
- AWS CloudFormation skeleton (.yaml)
- Docker Compose multi-service (.yml)
- Kubernetes Deployment, Service, Ingress (.yaml)

Open a template, edit it, export it. A full document round-trip without ever opening a browser.

VALIDATION THAT ACTUALLY HELPS

YAML and YML break on whitespace. A single misplaced space turns a working pipeline into a red build. The validator points to the exact line, the exact column, and explains the error in plain English.

CONVERTERS

- YAML to JSON / YML to JSON
- YAML to XML / YML to XML
- JSON to YAML
- XML to YAML

Useful when a tool wants JSON but your config is YAML, or when you need to paste a Kubernetes object into a tool that only speaks JSON.

15 LANGUAGES

UI available in English, Spanish, Portuguese, French, German, Russian, Hindi, Bengali, Indonesian, Turkish, Urdu, Arabic, Chinese (Simplified), Japanese, and Korean. YAML keys and values are never translated.

OFFLINE AND PRIVATE

Everything happens on the device. No file is uploaded. No keys, secrets, or tokens are sent anywhere. The app uses the network only for ads (free tier) and crash reporting.

FREE WITH OPTIONAL PRO UPGRADE

The app is free to install and use. The free tier shows ads to support development. A one-time Pro upgrade ($4.99) removes ads. No subscription. No recurring charges.

WHO IT IS FOR

- DevOps and SRE engineers editing manifests on call
- Backend developers working on application config
- Cloud engineers writing CloudFormation templates
- Students learning Kubernetes, Docker, and CI/CD

FAQ

Does it work offline? Yes. Open, edit, validate, format, convert, and save without a network.

Does it upload my files? No. Files stay on the device.

What about secrets in my config files? They never leave your device.

What is the difference between .yaml and .yml? They are the same format with two common extensions. .yaml is the official spec name; .yml is widely used in CI/CD configs (docker-compose.yml, .gitlab-ci.yml, application.yml). This editor handles both, and you choose the extension on every save.

Recent changes:
Fixed: you could get stuck in the viewer with the back button doing nothing. Back always works now, and the app is much faster on large files.

Multi-document files (---) and Helm templates now open properly, with a document switcher.

New: syntax highlighting, search in file, and a Checks tab that finds problems in your YAML — duplicate keys, tab indentation, values that quietly change meaning — and fixes them in one tap.

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More data about YAML / YML Viewer & Editor

Price	Free to download
Total downloads	1.3 thousand
Recent downloads	380
Rating	No ratings
Ranking	Not ranked
Version	1.1.0
APK size	23.3 MB
Number of libraries	?
Suitable for	Everyone
Ads	Contains ads

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YAML / YML Viewer & Editor compared with similar apps

Common keywords of similar apps

Yaml Yml Offline Validate Real Docker Kubernetes Free Service Ci Config Ads Phone Fully Plain Validation Break Build Downloads Drive Onedrive Line Column Extension Choose Export Github Actions Openapi Spec Gitlab Templates Json Edit Files Format Xml Device Convert Open Save Editor File Syntax Highlighting Document Work

Keywords missing from this app

Text App Viewer View Code Documents User Create Pdf Feature Storage Data Notepad Formats Share Editing Support Reader Access Saved Built Recent Search Tool Fast Easily Converted Directly Read Simple Lets Fonts Size Powerful Html

Downloads over time

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YAML / YML Viewer & Editor has been downloaded 1.3 thousand times. Over the past 30 days, it averaged 13 downloads per day.

Changelog of YAML / YML Viewer & Editor

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Developer information for CosmoVex

CosmoVex

trionapps@gmail.com

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Google Play Rankings for YAML / YML Viewer & Editor

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Technologies used by YAML / YML Viewer & Editor

12 permissions

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