Online Tools for IT professionals

SEO specialists, Web designers, Webmasters and Developers

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.

These tools allow to test REST & SOAP APIs, but also to query SQLite databases.


Code editor

Free tools for SEO specialists

ExtendsClass's tools allow you to optimize and manage your websites.


Google search


Other available tools
JavaScript minifier CSS minifier HTML minifier

Free tools for Web designers and webmasters

ExtendsClass's tools lets you manage your websites.


Google search

Encoders and Decoders

Tools for web developers, in order to encode images or convert XML / JSON.

Include encoders, decoders, converter, validators, and code minifiers.


Convert document

The tools are provided "as is", without warranty of any kind, either express or implied.