Tools

If you work with APIs, config files, or messy data exports, you’ve probably been here before: paste JSON into one tool to pretty-print it, open another to convert YAML, jump to a third to decode a JWT, and still end up writing a throwaway script just to answer one question about your payload. JSON Explorer brings that workflow into one place. It’s a free web app where you can explore, edit, query, and convert structured data — entirely in your browser, with no account required. ...

Responsive design sounds simple until you’re staring at a layout that looks perfect on your laptop and breaks on an iPhone 6 or a Galaxy Tab from 2014. Real users don’t all share the same screen. They’re on old phones, new tablets, scaled laptops, and ultrawide monitors—and your site has to work on all of them. Website Resolution Tester is a free, browser-based tool that lets you preview any website at exact device viewport sizes. No installs, no accounts, no complicated setup. Paste a URL, pick a resolution (or several), and see how your site actually renders. ...