The AXS TXT blog
Practical guides for getting more out of text and code.
How to Test a Regular Expression (Without Guessing)
Build a regular expression step by step and test it against real text: flags, greedy vs lazy, anchors, Unicode letters, and the JavaScript regex features that differ from other languages.
July 19, 2026 · Silviu Anca
How to Decode a JWT (and Why You Can't Trust It on the Client)
What is inside a JSON Web Token, how to read its header and claims, what the exp and iat numbers mean, and why decoding a token proves nothing about it.
July 18, 2026 · Silviu Anca
Are Online Text Tools Safe? Where Your Text Really Goes
In 2025 two popular formatting sites exposed about 80,000 saved snippets full of passwords and API keys. How text tools handle what you paste, and how to check one in a minute.
July 15, 2026 · Silviu Anca
Base64 Explained: How It Works, Padding, URL-Safe and Common Errors
What Base64 is for, why it ends in =, how much bigger it makes data, URL-safe Base64 in JWTs, and the 'outside of the Latin1 range' error — with worked examples.
July 14, 2026 · Silviu Anca
How to Create a Strong Password (and Why Length Wins)
What makes a password hard to crack, with the numbers: length vs character types, what NIST now requires, passphrases, and how our generator picks characters.
July 14, 2026 · Silviu Anca