JSON Formatter

About

When you need to pretty-print a minified blob, squash whitespace before pasting into a config, or pinpoint exactly where your JSON is broken — open the popup, paste, and read the result. Everything happens inside your browser; nothing is sent anywhere.

Key features:
- Three modes: **Format** (pretty-print with configurable indent), **Minify** (strip all whitespace), **Validate** (check syntax without rewriting)
- Indent picker: 2 spaces, 4 spaces, or Tab
- Validate mode shows a compact shape summary (e.g. "object · 4 keys") for valid JSON
- On error: a precise **line + column** pointer with the underlying parser message
- "Sample" button loads a representative JSON document for quick exploration
- One-click copy on the formatted/minified output
- Your last-used mode and indent setting are remembered locally

No data leaves your device. JSON is parsed and serialized in the browser; nothing is uploaded.