JSONLint vs BrowserUtils
JSONLint is a long-running online JSON validator and formatter. It now has 43 JSON tools, from repair and diff to converters and code generators, plus a Chrome extension and a paid Mac app.
Quick comparison
| Fact | JSONLint | BrowserUtils |
|---|---|---|
| Runs where | In the browser | In the browser (1 tool needs a server and is labeled) |
| Sign-up | Not needed | Not needed |
| Ads | Heavy | No third-party ads (one small note per page about our own products) |
| Platform | Web, Chrome extension and Mac app | Web, works on mobile |
| Open source | Yes | No |
| Price | Free; Mac app $6.99 one-time | Free |
| Tools | 43 tools | 299 |
Checked
Where JSONLint is better
- The site's source is on GitHub under the MIT license, and its validator engine is published as an npm package (@jsonlint/core) you can use in your own code.
- JSON Repair auto-fixes broken JSON, such as LLM output or bad copy-paste. BrowserUtils' validator shows where the error is but doesn't fix it.
- More JSON-specific tools (43), including JSON to Excel, JSON to SQL, a schema generator and an LLM token counter, plus a Chrome extension and a Mac app.
Where BrowserUtils is better
- No third-party ads. JSONLint runs programmatic ad auctions and a fixed footer banner on its pages.
- Generates types in 11 languages, adding Dart and GraphQL to the nine JSONLint covers (TypeScript, Python, Java, C#, Go, Kotlin, Swift, Rust, PHP).
- Goes beyond JSON on the same site: YAML, TOML, XML and SQL formatters and validators, plus JWT, Base64 and regex tools (299 tools in all).
- Paste JSON into the search box on any page and it's recognized and opened in the formatter, validator, tree viewer or converter you pick.
Tools on both
JSON Validator
Validate and lint JSON with detailed error messages
JSON Formatter
Format and beautify JSON data instantly
JSON Minifier
Compress JSON by removing whitespace
JSON Diff
Compare two JSON documents structurally
JSON Tree Viewer
Explore JSON data as a collapsible tree
JSON Schema Validator
Validate JSON data against a JSON Schema
JSONPath Tester
Test JSONPath expressions against JSON data
JSON to TypeScript Converter
Generate TypeScript interfaces from JSON
Discussion
Try BrowserUtils, free.
299 tools. No sign-up. Almost all of them run entirely in your browser.
Browse all tools
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