Tool library
All 33 free XSular tools — open any utility directly or read the matching tutorial for step-by-step explanations.
Blog
Practical articles on writing, development, design, and productivity — each tied to a free XSular tool you can use right away.
Understand the different versions of UUIDs, when to use each type, and how to generate cryptographically random unique identifiers instantly.
Learn how JSON Web Tokens work under the hood. Understand headers, payloads, and signatures, and decode or generate JWTs safely in your browser.
Understand how computers store text as binary data. Learn how to encode and decode ASCII and UTF-8 text to binary strings instantly.
Understand exactly how Base64 encoding works, why it is essential for transmitting binary data across the internet, and how to decode it safely.
Find out exactly how long it would take a hacker to crack your password. Learn the mechanics of password entropy and how to build unbreakable passphrases.
Learn how to expertly format, validate, and debug complex JSON data instantly in your browser without compromising sensitive API secrets.
