List of free json stuff for developerππ½
If you're looking for all programming tools around json (not just free). Check this page List of json Programming Tools

DevPal
DevPal is a set of many online developer tools that make developers' everyday work productve
Tag: url-encoder, text-editor, devtools, json, image, generator, encoder, decoder, formatter, productivity

Format Express
Instant online formatter for JSON / XML / SQL : what you paste is immediately beautified with syntax highlighting, node navigation, minimap, search tools, ...
Tag: json, xml, sql, formatter
Illimited use. No ads, no tracking.

Online JSON Formatter
Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
Tag: json, formatter

ExtendsClass's CSV Generator
Web-based random data generator. Generate CSV, JSON and SQL datasets. Free API.
Tag: mock-data, mock-api, json
No limit in the browser 200 API requests/day 5000 rows per call

Web Code Tools
The ultimate web code generators. Generate HTML, CSS, JSON-LD, Twitter Cards, Open Graph and more! No coding skills required.
Tag: html, css, JSON, meta


JSON sort
Free online recursive JSON sorting based on the key names. The values and list orders remain untouched. Paste the JSON and you're done!
Tag: json

Flatbase
Query your CSV and JSON files with SQL. Flatbase is the data science platform for developers. Upload files, write SQL, visualize results, and share with collaborators.
Tag: sql, json, api, playground
Up to 3 workspaces Share with up to 3 teammates