How to use the JSON Viewer
- Paste or upload your text. Type, paste or upload a .txt file into the input box.
- Pick options. No options needed — the tool runs instantly.
- See the result instantly. The output updates live as you type.
- Copy or download. Use Copy to clipboard or Download to save the result.
About this tool
JSON, XML, YAML, SQL, CSS, JS formatters, encoders, regex and code generators.
Read the complete JSON Viewer guide
Frequently asked questions
Is the JSON Viewer free to use?
Yes. The JSON Viewer on Gemma-4 is 100% free with no sign-up, no limits and no watermark. An optional free account lets you save favourites.
Is my data private?
Yes. Your inputs are processed instantly and are not stored on our servers.
Does it work on mobile phones?
Absolutely. The JSON Viewer is fully responsive and works on Android, iPhone, tablets and desktop browsers such as Chrome, Edge, Safari and Firefox.
Is there a limit on text length?
You can process very large texts (several megabytes). Extremely large inputs may take a moment depending on your device.
Who is the JSON Viewer useful for?
It is popular with web developers, backend and API engineers, students learning to code — anyone who needs quick, reliable help with formatting, validating and converting code and data.