Data formats
JSON formatter
Pretty-print or minify JSON for debugging, reviews, and smaller payloads.
Minified JSON saves bytes on the wire; formatted JSON saves your eyes during code review. Paste JSON, choose pretty or minify, and copy the result. The formatter validates syntax as it goes—invalid JSON is rejected with a parse error you can fix locally.
Similar tools
Quick links to related utilities—same workflow, different input or output.
- Data formatsYAML to JSONConvert YAML configs and manifests into JSON for tools that only speak JSON.Open
- Data formatsJSON to YAMLConvert JSON into YAML for configs, k8s manifests, and readable diffs.Open
- Data formatsJSONL validatorValidate JSON Lines, see which lines fail, and collect valid rows into a JSON array.Open
FAQs
Why format JSON at all?›
Indented JSON shows structure and nesting, which makes debugging and diffs easier. Minified JSON reduces size for caching and transmission.
Does formatting change my data?›
Only whitespace changes. Object keys and values stay the same semantically when the input is valid JSON.
Why am I seeing a parse error?›
JSON is strict: no trailing commas, double quotes only, and full Unicode escapes where needed. Fix syntax in your editor and try again.
Can it handle large documents?›
Very large blobs can lock the browser. For huge files, use jq, streaming parsers, or IDE formatters.
Is this a JSON validator?›
Yes—if it formats, it parsed successfully. Use it to sanity-check payloads before sending them to an API.
General
Do these tools send my data to Exemplar’s servers?›
By default, conversion and formatting run entirely in your browser. Nothing is uploaded to Exemplar for normal paste-and-transform workflows. Tools that deliberately open an external service (for example, a third-party speed test) are called out on the page.
Do I need an account or install anything?›
No account is required. Everything runs in the browser—there is nothing to install for these utilities. They complement the Exemplar platform but work standalone.
Are these utilities open-source or the same as other sites?›
These pages are built for Exemplar’s audience (developers working with APIs, config, and ops data). Behavior may differ slightly from other online tools; always verify critical output in your own environment.
Are there size or performance limits?›
Very large inputs can slow down or crash the tab—especially for images, huge JSON, or multi‑MB HAR files. For production-scale data, prefer local CLI tools, streaming parsers, or your own pipelines.
Can I use output in production?›
Yes, when you have validated it. Parsers and formatters here aim to be helpful for everyday tasks but are not a substitute for tests, schema validation, or security review where it matters.
Where can I read more about privacy?›
See our Privacy policy at /privacy for how exemplar.dev handles site analytics and general data practices.