Проверить json на валидность

JSON формат валидатор и проверки

JSON данных

Формат JSON широко применяется по всему веб-разработки. JSON строка всегда вырезать пробел, отступ и символ новой строки, чтобы сохранить пропускную способность сети и размер документа, но его слишком трудно читать и отлаживать. Даже ваш код JSON был минимизирован или uglified, этот инструмент может проверить JSON код и показывает сообщение дружественный ошибке вам.

Check out their products!

JSONLint is a validator and reformatter for JSON, a lightweight data-interchange format. Copy and paste, directly type, or input a URL in the editor above and let JSONLint tidy and validate your messy JSON code.

  • You can directly input a URL into the editor and JSONLint will scrape it for JSON and parse it.
  • You can provide JSON to lint in the URL if you link to JSONLint with the "json" parameter. Here’s an example URL to test.
  • JSONLint can also be used as a JSON compressor if you add ?reformat=compress to the URL.
  • Expecting ‘STRING’ — You probably have an extra comma at the end of your collection. Something like
  • Expecting ‘STRING’ , ‘NUMBER’ , ‘NULL’ , ‘TRUE’ , ‘FALSE’ , ‘ <‘ , ‘[‘ — You probably have an extra comma at the end of your list. Something like: ["a", "b", ]
  • Enclosing your collection keys in quotes. Proper format for a collection is
  • Make sure you follow JSON’s syntax properly. For example, always use double quotes, always quotify your keys, and remove all callback functions.
Читайте также:  Задача про 6 гномов и сокровища

If you use a Windows computer you may end up with different results. This is possibly due to the way Windows handles newlines. Essentially, if you have just newline characters (
) in your JSON and paste it into JSONLint from a Windows computer, it may validate it as valid erroneously since Windows may need a carriage return (
) as well to detect newlines properly. As a solution, either use direct URL input, or make sure your content’s newlines match the architecture your system expects!

Maintained by CircleCell. Thanks to Douglas Crockford of JSON and JS Lint, and Zach Carter, who built a pure JavaScript implementation. You can download the JSONLint source code on GitHub.

Adblocker eh? No problem. You can support our work in other ways.


The JSON Formatter was created to help folks with debugging. As JSON data is often output without line breaks to save space, it can be extremely difficult to actually read and make sense of it. This tool hoped to solve the problem by formatting and beautifying the JSON data so that it is easy to read and debug by human beings.

To further expand the debugging capabilities, advanced JSON validation was soon added following the description set out by Douglas Crockford of json.org in RFC 4627. It has since been updated to allow validation of multiple JSON standards, including both current specifications RFC 8259 and ECMA-404.

Most recently, the capability to fix common JSON errors was added. If enabled, it will replace incorrect quotes, add missing quotes, escape unescaped characters, and remove comments and trailing commas.

Learn About JSON

JSON or JavaScript Object Notation is a language-independent open data format that uses human-readable text to express data objects consisting of attribute-value pairs.

Читайте также:  Яндекс календарь приложение на ios

Although originally derived from the JavaScript scripting language, JSON data can be generated and parsed with a wide variety of programming languages including JavaScript, PHP, Python, Ruby, and Java.

To learn more about JSON check out some of the following links.


Install the JSON Formatter & Validator Bookmarklet to quickly and easily format and validate any public JSON URL with a single click.

To install, just drag the button above into your bookmarks toolbar.


November 2019

  • Added integration with the Mutate: Data Converter and the JSONPath Expression Tester, via new convert and query buttons.
  • Added drag and drop, and browse, local file loading.
  • Added capability to fix common JSON errors. It will optionally replace incorrect quotes, add missing quotes, escape unescaped characters, and remove comments and trailing commas.
  • Fixed an object key string comparison issue. Thanks Gwon.

October 2019

  • Added the latest JSON specification, RFC 8259.
  • Added performance improvements.
  • Added limits to val >Thanks Khurram.

May 2019

  • Added error highlight toggling. Thanks Raf.

January 2019

  • Added a single tab, tab template.

December 2018

  • Added JSON val >Thanks to everyone that reported it.
  • Fixed an issue when val >Thanks Rodrigo.

June 2017 v5

  • Fixed a cookie bug.

November 2017

  • Improved images.
  • Updated broken Learn About JSON links. Thanks Tony.

October 2016

  • Switched copy to use clipboard.js.

July 2016

  • Fixed a RFC 7159 val >Thanks Anonymous.

November 2015 v4.5

  • Added the ability to val >Thanks Philipp.
  • Fixed a parse bug. Thanks Bla.

October 2015

  • Added the ability expand/collapse all nodes.

August 2015

  • Added the ability to rename results.
  • Added the ability to download results.
  • Switched to HTTPS.
  • Fixed a text rendering bug. Thanks Kyle.

October 2014

  • Fixed a template collapse/expand bug. Thanks Dmitry.
  • Fixed a copied result entity bug. Thanks Jim.

September 2014

  • Added a four space tab template.
  • Added a clear button.
  • Improved grow/shrink buttons.
  • Fixed a clipboard bug.

July 2014 v4.0

  • Redesign of frontend.
  • Updated backend from CodeIgniter to Laravel.
  • Added cookies to remember options.
Читайте также:  Телефон периодически загорается экран

September 2013

  • Changed hosts to further improve speed.

April 2013

  • Added autofocus to JSON Data input.
  • Fixed stripping of invisible characters. Thanks Paul.

March 2013

  • Fixed a typo. Thanks Anonymous.
  • Added a donation button.

February 2013

  • Fixed a number val >Thanks Chris and Anonymous.

January 2013

  • Updated external libraries.
  • Improved caching.

May 2011

  • Added ability to collapse/expand objects and arrays.
  • Added a two space tab template.
  • Fixed bugs reported since version 3.0.

February 2011 v3.0

  • Redesign of frontend.
  • Improved validation logic. String validation in particular is greatly improved.
  • Improved error messages.
  • Added goto error ability.
  • Added ability to accept JSONP. Check out this example.
  • Added ability to pass JSON URL in URL as hash. Check out this example.
  • Added a bookmarklet.
  • Added a button to copy results to clipboard.
  • Removed custom template capability. From now on send in template requests & examples.
  • Removed Select All button.

November 2009

  • Upgraded hosts to improve speed.

December 2008

  • Added a Select All button.
  • Fixed url validation and output bugs.

November 2008 v2.0

  • Improved JSON formatter.
  • Improved JSON parser.
  • Redesign of frontend.
  • Added multiple results.
  • Added templates.
  • Added more helpful error messages.
  • Added validation.
  • Added resizable textareas.

A Long Time Ago. in 2007 v1.0

  • Initial release of the JSON Formatter.


Although you are in no way obligated, some users have requested a way to support the project.

A big thank you goes out to all the donors who have already contributed. Your kindness and generosity is very much appreciated.


Over the years the JSON Formatter & Validator has been immensely improved through the feedback and suggestions of its users. We encourage you to continue to pass along any new recommendations, requests or bug reports.