itsfully.online

Overview

itsfully.online is a collection of about 145 free web tools grouped into 13 categories, including text, developer, design, SEO, security, math, physics, media and file-conversion utilities. Pages cover tasks such as formatting and validating JSON, profiling CSV columns, converting CSV to JSON, parsing cron expressions, testing regex patterns and checking colour contrast against WCAG. Users open a tool and run it through a form; the site requires no account and no API key.

Each tool page labels its default execution mode. About 55 forms use the browser engine, while other forms send the supplied input to the site's server for processing, and conversions may create temporary files. A public JSON manifest lists the available tools with their input and output schemas, execution modes and, where present, a client module and exported function that agents can import.

A companion how-to guide describes fetching the manifest, loading a module and executing it with documented inputs, noting that a headless browser can supply browser APIs that a plain Node.js runtime does not. The site advises testing with small, non-sensitive samples and checking important security, math or AI results against a trusted reference before relying on them.