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Professional JSON formatter and validator with VSCode-inspired developer UI. Live syntax highlighting, auto-formatting, JSON validation with error detection.
Text ToolsLoading tool...
Count words, characters, sentences, paragraphs, and lines.
Try tool →Automatically capitalize the first word in every sentence.
Try tool →Switch between lowercase, UPPERCASE, Title Case, and more.
Try tool →Count characters, words, sentences, paragraphs, reading time, and more with live updates.
Try tool →Find your exact age in years, months, days, and more.
Try tool →Find the number of days between any two dates.
Try tool →Quick percentage calculations for discounts and tips.
Try tool →Find your best bedtime or wake-up time for full cycles.
Try tool →{ "name": "MS Tools", "version": 1, "features": [ "calculators", "converters", "utilities" ], "isActive": true, "config": { "theme": "dark", "maxResults": 100, "settings": null } }
Auto-Formatting
Your JSON is automatically formatted and validated as you type. No need to click buttons!
Syntax Highlighting
Output is color-coded: keys in blue, strings in orange, numbers in green, booleans/null in purple.
Indentation Control
Use the indent selector to switch between 2, 4, or 8 spaces for your preferred formatting style.