Hey there fellow data geek! JSON has completely changed how we store and transmit data on the web. In this post I‘ll convince you why JSON is every developer‘s best friend. We‘ll look at:
- Why JSON is so darn useful
- Common operations performed on JSON
- 19 handy online JSON utilities to make your life easier
So brew a fresh cup of coffee, grab a snack and let‘s dig in!
Why JSON is the Goat
In the early days of the web, XML was the main data format used for APIs and web services. But it had some annoying limitations:
- Bulky and slow – All those closing tags added lots of overhead. JSON is lightweight and fast.
- Verbose and redundant – So. Many. Tags. JSON‘s simple name/value pairs are concise.
- Complex parsing – XML parsing is a pain with all those nodes. JSON decoding is simple across languages.
Then JSON came along and changed the game. Originally based on JavaScript object literals, it was popularized by Douglas Crockford in the early 2000s.
JSON has many advantages over XML:
- ⚡️Lightning fast – Without all the tag overhead JSON is smaller and faster to parse. Important for mobile.
- 🤓Human readable – Basically just keys and values so it‘s intuitive.
- 🔌Universally supported – Every modern language has JSON libraries built-in or available.
- 💾Great for storage – JSON maps nicely to objects and fits NoSQL databases like a glove.
- 📡Perfect for web services – Lightweight and fast over the wire with minimal parsing.
Here is a simple example of JSON data describing my friend Sam:
{
"firstName": "Sam",
"lastName": "Blue",
"age": 28,
"address": {
"street": "444 Sesame St",
"city": "New York",
"state": "NY"
}
}
The key-value pairs and nested objects make it very intuitive.
JSON usage has exploded over the last decade:
| Year | Percentage of Websites Using JSON |
|---|---|
| 2013 | ~10% |
| 2018 | ~50% |
| 2022 | ~80% |
Source: W3Techs
It has become the lingua franca for web services and data transfer. Almost every database, programming language and platform supports it out of the box.
So in summary, here‘s why JSON is the GOAT:
✅ Lightning fast to parse
✅ Human readable
✅ Minimal overhead
✅ Easy to generate and parse
✅ Maps nicely to objects
✅ Built-in support everywhere
No wonder it has become so popular!
Common Operations on JSON
Now that we know JSON is the jam, let‘s look at some of the common operations performed on JSON data:
Validation
Validating that JSON is properly formatted according to the JSON spec. Ensures different clients can parse it.
Formatting
Making JSON human readable by properly formatting it with indentations and line breaks.
Parsing
Convert a JSON string into native data structures like objects, arrays, etc. Allows programmatic access.
Stringification
Serialize a native object into a JSON string to transmit over the network.
Editing
Make changes to JSON data by adding, deleting or modifying elements as needed.
Querying
Selectively retrieve parts of a JSON document instead of the whole thing.
Transformation
Convert JSON to other formats like XML, CSV or even YAML. Bridge gaps between systems.
Performing these operations manually is a drag. That‘s where online JSON utilities come in handy!
Let‘s look at 19 useful ones that will make working with JSON a breeze.
19 Handy Online JSON Utilities
Over the years many online JSON tools have popped up to help developers. Here I‘ve hand-picked 19 awesome utilities that will scratches any JSON itch:
1. JSONLint – Validator
JSONLint is one of the most popular online JSON validators. It uses the JSON spec RFC 8259 to check if your JSON is legit.
Just paste some JSON in and it will highlight any issues found. No more guesswork!
It also auto-formats the JSON with spacing and line breaks so you can easily spot issues.

Validation is super important before sending JSON to an API or loading it into a database. JSONLint makes it a breeze.
2. JSON Formatter & Validator – All-in-one
JSONFormatter combines formatting, validating and transforming JSON all in one. Talk about handy!
It beautifies ugly JSON into an easy to read format. You can also validate against multiple JSON standards.
Unique features include converting JSON to other formats like CSV, SQL, XML, YAML etc. This helps integrate JSON across systems.

For all your JSON needs, JSONFormatter has got you covered.
3. JSON Editor Online – Tree editor
JSON Editor Online provides a feature-rich JSON editor right in your browser.
It shows JSON in a collapsible tree view to easily navigate large docs. And you can edit values in the tree with autocomplete.
Other nifty features include validation, file downloads and theme customization. No login required.

The unique tree editor with autocomplete makes editing complex JSON a breeze!
4. JSON Mate – Inspector & beautifier
JSONMate packs powerful features like a JSON inspector, JSON beautifier and REST API importer.
You can input JSON and see it in an interactive inspector view. It also lets you visually debug any JSON issues.
Other features include downloading edited JSON and seamlessly importing REST API examples.

JSONMate combines JSON capabilities you won‘t find together anywhere else.
5. JSON Generator – Mock data
JSONGenerator.org generates mock JSON data based on a schema. Super useful for testing!
Just define your schema UI and it will generate randomized JSON data matching it.
You can customize options like string lengths, value ranges, etc. Over 20 field types supported.

When you need complex dummy JSON data fast, JSON Generator has got your back.
6. Object to JSON – Serializer
Object to JSON converts a JavaScript object into a JSON string.
Say you generate an object dynamically in JavaScript. Plop it into this tool and boom – you have JSON.
No need to manually serialize objects to JSON before sending to API.

One less tedious manual step thanks to Object to JSON!
7. JSON Viewer – Chrome extension
JSONViewer prettifies JSON responses right in Chrome.
Install it and any ugly blob of JSON returned will be auto-formatted with syntax highlighting.
You also get a collapsible tree view of the JSON next to the raw response.

Take the pain out of reading API JSON responses with JSONViewer.
8. JSON Formatter – Chrome extension
Similarly, the JSON Formatter Chrome extension formats JSON responses in your browser.
After adding it to Chrome, it will detect and beautify any JSON from APIs, JSON files or JavaScript.
Customize formatting with options like tree collapsing, clickable links etc.
Yet another way to make JSON human readable thanks to JSON Formatter.
9. JSON to CSV – Converter
JSON-CSV allows effortless conversion of JSON to CSV/Excel online.
Just paste or upload JSON and it will automatically parse it into a spreadsheet-friendly CSV format.
You can download the resulting CSV/Excel file to analyze and visualize JSON data.

Now you can easily import JSON into Excel or databases that support CSV. Sweet!
10. CSV to JSON – Converter
CSVJSON does the reverse – convert CSV/Excel data into JSON online.
It auto-detects delimiters and data types from a CSV sample. Click download to get JSON.
Great for bringing CSV/spreadsheet data into the JSON world.

CSVJSON makes going from CSV to JSON a breeze.
11. JSON Query Online – Extractor
JSONQuery allows extracting specific data from JSON through JSONPath queries.
Instead of parsing everything manually, you can query just the data needed.
Saves time and bandwidth instead of downloading entire JSON payloads.

Pinpoint precision when retrieving data from JSON with JSONQuery.
12. XML to JSON – Transformer
XML to JSON transforms XML into JSON online with ease.
This helps exchange data between legacy XML systems and modern JSON-based services.
Just copy in XML data and download the converted JSON.

Say goodbye to cumbersome XML and embrace the JSON future.
13. JSON Utils – API converter
JSONUtils offers JSON conversion and validation through a handy API.
It handles validation, formatting, XML/JSON conversion behind a simple API.
Easily integrate into apps instead of using clunky one-off converters.

Automate your JSON workflows by tapping into the JSONUtils API.
14. JSON Diff – Comparer
JSON Diff makes comparing JSON objects a breeze through an intuitive diff view.
Paste in 2 JSON objects side by side and it will visually highlight the differences between them.
Great for spotting changes in API responses during testing and debugging.

Now you can diff JSON instead of pore over it line by line!
15. JSON Parser – Decoder
JsonParser converts JSON into parsed JavaScript objects you can access.
It takes your JSON and returns an equivalent object variable you can programmatically access.
No need to manually decode JSON in JavaScript anymore.
One less step between you and programmatically accessing your JSON thanks to JsonParser.
16. JSON Beautifier/Minifier – Optimizer
JSON Beautifier/Minifier helps optimize JSON payloads.
The beautifier prettifies hard to read compact JSON by formatting it.
The minifier compacts JSON by removing unneeded whitespace. Good for reducing transmission size.

Optimize JSON for human or machine consumption with a few clicks.
17. JSON Editor Online – Tree editor
JsonEditorOnline is another robust browser JSON editor with handy features.
You get an interactive tree-view of JSON, search and filtering, collapsing, and more.
Useful for modifying API examples quickly without coding.
JsonEditorOnline brings advanced JSON editor features right into your browser.
18. JSON Schema Validator – Linter
JSON Schema Validator validates JSON data against a predefined JSON schema spec.
JSON schema defines structure, data types, enums etc. Paste your JSON here to validate it conforms.
Great for consuming 3rd party JSON APIs with a known schema.

Make sure your JSON meets expectations with JSON Schema Validator.
19. JSON Generator & Editor – Builder
JSONGenerator lets you visually build JSON through an editor GUI.
You add objects/arrays and set values via UI to generate valid JSON without coding.
It also has nifty features like mocking APIs and JSON schema validation.

Visually construct complex JSON objects with JSONGenerator.
Wrap Up
I hope this tour of JSON and awesome online tools got you excited about integrating JSON into your next project!
Here‘s a quick recap on why JSON is so gosh-darn useful:
✅ Human readable
✅ Fast to parse
✅ Built-in support
✅ Maps nicely to objects
✅ Lightweight format
And you‘re now equipped with 19 handy JSON utilities:
- Validate JSON
- Format JSON
- Parse & stringify
- Transform JSON
- Edit JSON
- Query JSON
- Generate test data
- Compare JSON
- …and more!
JSON can do a ton of the heavy lifting for shuttling data between clients, servers, databases and services. Combined with these online utilities, you‘ll be a JSON master in no time!
Let me know if you have any other favorite JSON tools I should check out!
JSON geekingly yours,
[Your name]