JSON Formatter
Formatters
Format, beautify and validate JSON with clear error messages.
Open ToolFree, fast and privacy-friendly tools for developers. Format, convert, encode, validate and generate — directly in your browser.
The tools developers reach for most.
Formatters
Format, beautify and validate JSON with clear error messages.
Open ToolFormatters
Check whether a JSON document is valid and locate syntax errors.
Open ToolConverters
Convert JSON documents into readable YAML.
Open ToolConverters
Encode text to Base64 and decode Base64 back to text.
Open ToolSecurity
Decode JWT header and payload claims locally in your browser.
Open ToolDeveloper Utilities
Test regular expressions with live matches and capture groups.
Open ToolDeveloper Utilities
Build cron expressions visually and explain existing ones.
Open ToolFormatters
Format and minify SQL queries for several dialects.
Open ToolBrowse tools grouped by what they help you do.
All core tools are free to use. No paywalls, no premium tiers.
Most tools run entirely in your browser, so results appear instantly.
Your data stays in your browser whenever possible — nothing is uploaded.
Start using any tool immediately. No account, no email required.