5 focused utilities
Web Tools
Focused browser utilities for URLs, tabular data, HTML text, and responsive CSS measurements.
Web work often fails at boundaries: an encoded query value is decoded twice, a CSV field contains an unexpected comma, HTML text is inserted without escaping, or a responsive measurement is calculated from the wrong viewport. This collection makes those assumptions visible before the result moves into a site or application.
Each utility runs locally and keeps source and result close together for review. The tools follow browser standards, but production code should still validate untrusted input, document encoding rules, and test output in the environment that will consume it.
URL Parser
Break an absolute URL into its origin, path, query parameters, and fragment.
URL Encoder
Encode or decode URL components without sending addresses to a remote service.
CSV ↔ JSON Converter
Convert quoted CSV records and JSON object arrays in either direction locally.
HTML Entity Encoder
Encode HTML-sensitive characters or decode named and numeric character references.
CSS Unit Converter
Compare px, rem, em, vw, and vh values using explicit layout assumptions.