About JSON Tools

Format, minify, and validate JSON right in your browser — with the exact line and column when something is wrong.

JSON is the language your software uses to talk to itself: API responses, configuration files, webhook payloads, log lines, and data exports are all JSON, and all of them become hard to read the moment they arrive as one long line. JSON Tools is a focused workbench for that moment. Paste in a payload and format it with two-space, four-space, or tab indentation so the structure is visible at a glance. Minify it when you need the smallest possible version for a request body or a config value. Validate it when a parser somewhere is refusing your file and you need to know why. The validator does more than say invalid: when the parser reports a position, the tool converts it into a line and column so you can jump straight to the missing comma, the trailing comma, or the unquoted key that broke the parse. Everything runs locally in your browser using the same JSON parser your browser ships with, so your data is never uploaded, logged, or stored — you can safely check production payloads, tokens-adjacent configuration, and customer exports here. It is deliberately simple: one input, three actions, a clear verdict, and output you can copy straight back into your editor, your API client, or your ticket.

Who operates this site

JSON Tools (jsontools.codetoolworks.com) is operated by BrightSpan Holdings LLC under the Book AI Studio brand. Book AI Studio builds practical online calculators and tools that give people clear, honest estimates before they make a decision. If you have a question about this site, a correction to suggest, or a problem to report, contact us at admin@bookaistudio.com.

Ready to try it? Open the JSON formatter, minifier, and validator tool.