ExtendsClass
Free Online Toolbox for developers
Online Tools for Developers
Web designers and Webmasters
Developer tools
ExtendsClass provides tools directly usable in a browser. It saves you from having to install add-ons to your browser in order to add features.
You have at your disposal syntax validators, code formatters, testers, HTTP clients, mock server, but also a SQLite browser.
These are small and easy-to-use tools that can help when you do not want to install software on your workstation.
Testers
RegexTester XPath
Tester JSONPath
Tester JSON Schema validator XML Schema validatorXML validatorCSV validator
HTTP API tools
RESTclient SOAP
client Mock
REST API Web Service
Testing JSON
Web StorageJSON Web
Token decoderFake API
Database tools
SQLOnline CompilerMySQL
Online Mongodb
Online PostgreSQL
OnlineSQL Server
OnlineOracle
OnlineSQLite
browser SQL
FormatterSQL Syntax
CheckerSQL Query
Builder
Code converter
SQLto SQLSQL
to MongoDBPython
to JavascriptTypescript
to JavascriptKotlin
to JavaPHP to
PythonXPath to
CSS Selector
Encoder, decoder, Converter, Formatter, Compare tool
The available tools allow you to convert data (CSV, TSV, XML and JSON), compare data (Text, XML, JSON), format data (XML, JSON) and also encode and decode base 64 data.
Encoders
URL encoder and decoder Base64 decode / encode HTML entity decode / encode Base64 image encoderConverters
XML to JSON JSON to CSV converter CSVto Excel JSON to YAML converterJSON to PHP converterJSON to Python converterParquet
to CSV
Formatters
XMLformatter JSON
formatter CSV
formatter Python
formatterJavascript
formatterReact
formatterParquet
viewerAvro
viewerPHP
formatter
Free tools for Web designers and webmasters
ExtendsClass's tools lets you optimize and manage your websites.
You have at your disposal minifiers and Generators.
