To convert YAML to JSON, choose your YAML config files above, adjust the options if needed and press "Convert to JSON". The JSON downloads instantly: free, with no sign-up, and the file never leaves your device.
About the YAML to JSON Converter
This YAML to JSON converter turns config files from YAML into JSON without installing software or uploading anything. It solves a common problem: YAML is indentation-sensitive and many tools and APIs expect JSON. Converting to JSON gives you structured JSON, ideal for APIs, web and mobile apps, configuration and MongoDB or Firebase data.
The file is parsed with well-tested open-source parsers (the browser's JSON and XML parsers, js-yaml and smol-toml) and written back out as valid JSON. Because everything happens on your own device, your config files are never uploaded, stored or seen by anyone else, which makes it safe for customer lists, salary sheets, GST data and API exports.
What to expect: objects, lists, numbers, booleans and text keep their structure and types; invalid input is reported with the line of the problem so you can fix it.
How to use the YAML to JSON Converter
- Click "Choose files" or drag your YAML config files onto the box. You can add several at once.
- No settings are needed; indentation and types are handled automatically.
- Press "Convert to JSON". The conversion runs on your device and shows its progress.
- Download each JSON file, or use "Download all (ZIP)" when you converted several.
- Open the result in every programming language or VS Code to check it; your original YAML is never changed.
Tips & benchmarks
- The JSON is pretty-printed with two-space indentation and numbers and booleans keep their types.
- Validate the output in your target tool (for example kubectl, Cargo or your API client) before deploying it.
- Keep the file name simple (letters, numbers and hyphens) if you plan to upload the JSON to a website or government portal.
Frequently asked questions
How do I convert YAML to JSON?
Click "Choose files", select your YAML config files, adjust the options if you want, and press "Convert to JSON". The JSON downloads immediately; with several files you can download everything as one ZIP.
Is this YAML to JSON converter free and safe?
Yes. It is completely free, with no sign-up, no daily limit and no watermark. The conversion runs inside your browser, so your config files never leave your phone or computer and nothing is stored on News Appite's servers.
What happens to nested data?
Nothing is lost: objects, lists and values map one-to-one between YAML and JSON. Comments are not carried over because most formats cannot store them.
Can I convert several YAML files at once?
Yes. Add as many YAML files as you like; they are converted one after another and you can download them individually or together as a ZIP.
Does it work on iPhone, Android and Mac?
Yes. The converter works in any modern browser, including Chrome, Safari, Edge and Firefox, on Android, iPhone, iPad, Windows, macOS and Linux. No app is needed.
What is the difference between YAML and JSON?
YAML (YAML Ain't Markup Language) is a human-friendly configuration data best suited to Kubernetes, Docker Compose, GitHub Actions, Ansible and app configuration. JSON (JavaScript Object Notation) is a structured data (text) best suited to APIs, web and mobile apps, configuration and MongoDB or Firebase data.
Is there a file size limit?
There is no upload limit, because nothing is uploaded. The practical limit is your device's memory: files of a few hundred megabytes work on most computers, and phones handle smaller files comfortably.
How do I convert YAML to JSON in Python?
Use PyYAML: json.dump(yaml.safe_load(open("input.yaml")), open("output.json", "w"), indent=2). If you just need the file, this converter does it in the browser without writing any code.
YAML ko JSON kaise kare?
Is page par "Choose files" dabaiye, apni YAML file chuniye aur "Convert to JSON" par click kijiye. JSON file turant download ho jaati hai. Ye bilkul free hai, sign-up nahi chahiye, aur aapki file kisi server par upload nahi hoti.
YAML vs JSON: format comparison
| YAML | JSON | |
|---|---|---|
| Full name | YAML Ain't Markup Language | JavaScript Object Notation |
| Type | Human-friendly configuration data | Structured data (text) |
| Created by | Clark Evans, Ingy döt Net and Oren Ben-Kiki, 2001 | Douglas Crockford, early 2000s (RFC 8259) |
| Compression | None (text) | None (text) |
| File extension | .yaml | .json |
| MIME type | application/yaml | application/json |
| Best for | Kubernetes, Docker Compose, GitHub Actions, Ansible and app configuration | APIs, web and mobile apps, configuration and MongoDB or Firebase data |
| Opens in | VS Code, kubectl, Docker, GitHub and every major programming language | every programming language, VS Code, Postman, browsers and databases |
What is a YAML file?
YAML is a configuration language that uses indentation instead of brackets, making it easy for people to read. Kubernetes, Docker Compose, GitHub Actions, Ansible and many CI pipelines are configured in YAML.
What is a JSON file?
JSON is the data format of the modern web: almost every API, app configuration and NoSQL database speaks it. It represents objects, arrays, numbers and text in a compact, human-readable way.
Need it the other way round? Use the JSON to YAML Converter.
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All tools on News Appite are free to use for personal and commercial work. Calculations and file conversions are performed in your browser; the redirect and cache checkers make a single request to the URL you enter and store nothing. Found a bug or want a new tool? Tell us.