jsonfmt.dev vs JSONLint

jsonfmt.dev9.0Visit JSONLint8.7Visit

Higher score jsonfmt.dev #3 in JSON Tools 9.0/10 Free plan Free plan✓ 4 of 5 features Visit jsonfmt.dev

vs

JSONLint #5 in JSON Tools 8.7/10 Free plan Free plan✓ 3 of 5 features Visit JSONLint

• jsonfmt.dev fits best

  Power users needing repair, JSONL, and API access

• JSONLint fits best

  Broad conversion and code-generation workflows

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Side by side

Feature	jsonfmt.dev 9.0/10 Visit ↗	JSONLint 8.7/10 Visit ↗
At a glance
Editor score	9.0	8.7
Ranking	#3 in JSON Tools	#5 in JSON Tools
Best for	Power users needing repair, JSONL, and API access	Broad conversion and code-generation workflows
Pricing model	Free plan + paid	Free plan + paid
Starting price	$9 one-time	$6.99 one-time
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Browser extension	Cloud, Desktop
Platforms	Web, Chrome extension	Web, macOS
Built for	Solo, Small business, Mid-market	Solo, Small business
Features jsonfmt.dev 4/5 · JSONLint 3/5
Schema validation	✓	✓
JSONPath querying	✓	✓
jq querying	—	Not checked yet
Batch processing	✓ (best)	Not checked yet
JSON diff and compare	✓	✓
Specs
Available platforms	web, api, chrome_extension	web, macos
Our review
Pros	Covers formatting, validation, JSONPath, diffing, repair, and conversions Processes JSONL and offers JWT decoding and inspection REST API, CLI, MCP server, and Chrome extension support	40+ browser-based validation, formatting and conversion tools JSONPath, Schema, diffing and multi-format conversion in one toolkit $6.99 one-time Pro app adds offline macOS editing and smart repair
Cons	No jq querying Pro rate limit is needed for higher request volume The toolset may exceed the needs of basic formatting tasks	The native editor is available on macOS rather than across platforms Offline support and smart repair are part of the paid Pro app Its broad feature set may exceed the needs of simple validation tasks
Our verdict	jsonfmt.dev is a browser-based JSON toolkit for developers who need more than formatting and minification. Its feature set includes configurable indentation, RFC 8259 syntax validation, JSON Schema validation with detailed errors, JSONPath… Read the review →	JSONLint is a browser-based toolkit for developers who work with JSON across validation, transformation and code-generation tasks. The free Web Tools plan brings more than 40 tools for JSON validation, formatting, beautification,… Read the review →

Strengths and trade-offs

• jsonfmt.dev — where it wins

  • Covers formatting, validation, JSONPath, diffing, repair, and conversions
  • Processes JSONL and offers JWT decoding and inspection
  • REST API, CLI, MCP server, and Chrome extension support

  Where it doesn't

  • No jq querying
  • Pro rate limit is needed for higher request volume
  • The toolset may exceed the needs of basic formatting tasks

• JSONLint — where it wins

  • 40+ browser-based validation, formatting and conversion tools
  • JSONPath, Schema, diffing and multi-format conversion in one toolkit
  • $6.99 one-time Pro app adds offline macOS editing and smart repair

  Where it doesn't

  • The native editor is available on macOS rather than across platforms
  • Offline support and smart repair are part of the paid Pro app
  • Its broad feature set may exceed the needs of simple validation tasks

• jsonfmt.dev9.0/10 · Free plan

  A broad JSON toolkit with local browser processing, API access, and a $9 one-time Pro plan.

  Visit jsonfmt.devFull verdict →
• JSONLint8.7/10 · Free plan

  A broad JSON toolkit with free browser tools and an affordable macOS editor.

  Visit JSONLintFull verdict →