JSON Formatter & Validator

If you’ve ever tried to read a JSON response from an API or a console log, you know the pain. It’s usually just one massive, unreadable wall of text that stretches across the whole screen. Trying to find a specific key or figure out where a nested object ends is literally like looking for a needle in a haystack. It’s so frustrating and makes debugging take way longer than it should. Our JSON Formatter and Validator is the "sanity pill" for developers. You just dump that messy, minified blob of text into the tool and—boom—it transforms into a beautiful, indented, and color-coded structure that actually makes sense. It adds the proper newlines and spacing so you can see exactly how the data is nested. But it’s not just about looks; it also checks your syntax. If you missed a comma, a quote, or messed up a bracket, it will highlight exactly where you went wrong and tell you why. I use this tool basically every day when I’m testing APIs or checking config files. And as always, the best part is the privacy. Most other "pretty print" sites make you upload your data to their servers. If you’re pasting JSON that contains API keys, personal info, or private IDs, that’s lowkey dangerous. On Filemint, the formatting happens entirely in your browser. Your data never leaves your device. It’s fast, it’s secure, and it’s an essential part of any modern dev’s toolkit. Seriously, once you stop squinting at minified JSON and start using a formatter, your life gets so much easier.