About

Cassidor Tools

Cassidor Tools is a collection of fast, practical developer utilities designed to work directly in the browser whenever possible.

The goal is simple: give developers useful tools without accounts, downloads, or unnecessary friction. Most tools process data locally in the browser so you can format, validate, convert, encode, and test information without uploading it anywhere.

We focus on speed, clarity, and privacy. The site is built for quick workflows and clean interfaces, not bloated dashboards or noisy marketing.

No accounts

Use the tools without creating an account or signing in.

Private by default

Browser-based tools keep your input on your device whenever they can.

Built for speed

Fast, lightweight tools with clean interactions and zero unnecessary complexity.