JSON Beautifier turns any raw JSON response into a clean, collapsible tree — automatically, the moment you open it. No pasting, no uploading, no waiting.
Add to ChromeOpen any JSON endpoint. It formats itself — there is no button to press.
Searches the whole document, including branches that aren't rendered yet.
Windowed rendering with a node budget, so a huge array never freezes the tab.
Click a key to copy its path, click a value to copy the value.
Zero network requests. Your JSON never leaves the browser.
Open source, MIT licensed. No ads, no telemetry, no accounts.
Because the popular ones stopped being trustworthy. Some now bundle adware, some hang on files over a few megabytes, and some fail silently when the JSON is slightly malformed — leaving you staring at a blank page. This one is small, fast, honest about errors, and does exactly one thing.