Blog
Guides and tips on text, JSON, images and developer tools — everything processed privately in your browser.
5 min read
Compound vs. Simple Interest: What's the Difference?
Simple interest is charged on the original amount; compound interest is charged on the growing balance. The gap is huge over time.
5 min read
How Loan Payments Work (and How to Calculate Them)
Every fixed loan payment splits between interest and principal. Here is how the monthly figure is calculated and why early payments barely move the balance.
4 min read
Why Client-Side Tools Are More Private
Client-side tools process your data in the browser and never upload it. Here is why that matters and how to tell the difference.
5 min read
How to Format, Validate, and Compare JSON
A practical guide to cleaning up messy JSON, catching syntax errors, and diffing two payloads — all in the browser.