Written explanations of the problems our tools solve — why a PDF pastes with a line break on every line, what a JWT actually contains, how sales tax works backwards. Every guide ends at the tool that does the job for you.
10 guides, linked to the 45 free tools that run in your browser.
Developer Tools
GPT-6 Astra has a 1.05M context window and costs $10/$50 per million tokens. It also breaks your integration in four specific ways, and loses to Claude on three coding benchmarks at the same price. What the release notes do not tell you.
Developer Tools
OpenJDK Platform Binary is just Java running someone else's program. Here is how to find out which application started it, why it burns CPU, and how to tell a legitimate Java process from one worth investigating.
Tool: Hash Generator
Developer Tools
A JWT is three chunks of Base64, and the first two are readable by anyone holding the token. What the signature protects, what the claims mean, and why alg:none was a real vulnerability.
Tool: JWT Decoder
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Reasonable. The guides exist for when something is behaving strangely and you need to know why. When you just need it fixed, go straight to the tool.