Formatters
Beautify and format JSON, SQL, HTML, CSS, XML, and YAML. · 8 live · Free · No signup
JSON Formatter
Format, beautify, and indent JSON online instantly. Validates JSON syntax and highlights errors. Free online JSON formatter and beautifier, no account required.
JSON Validator
Validate JSON syntax instantly online. Pinpoints the exact line and column of every error. Free online JSON validator and syntax checker, no signup required.
JSON Compare
Compare two JSON objects side-by-side online. Highlights added, removed, and changed keys with full dot-notation paths. Free online JSON diff tool, no signup required.
SQL Formatter
Format and beautify SQL queries online. Supports MySQL, PostgreSQL, SQLite, T-SQL, and BigQuery. Clean indented output instantly. Free SQL formatter, no account needed.
HTML Formatter
Format and indent HTML markup online for better readability. Beautifies minified HTML instantly with configurable indentation. Free HTML formatter, no signup required.
CSS Formatter
Format and expand minified CSS stylesheets online. Consistent indentation, readable property formatting. Free CSS formatter and beautifier, no account required.
XML Formatter
Format and indent XML documents online. Validates structure and reports errors. Supports attributes, namespaces, and large files. Free XML formatter, no signup needed.
YAML Formatter
Format YAML and convert between YAML and JSON online. Supports Kubernetes configs, CI/CD pipelines, and Ansible playbooks. Free YAML formatter, no signup required.
Frequently Asked Questions
Is my JSON data sent to a server?
No. All formatting runs in your browser. Your data never leaves your device.
Can it handle large JSON files?
Yes, up to several MB. For very large files, consider splitting into smaller chunks for easier readability.
What kind of errors does it detect?
All standard JSON syntax errors: missing quotes, trailing commas, unexpected tokens, mismatched brackets, and more.
Does it compare nested objects?
Yes. The comparison is fully recursive — it drills into every level of nesting and reports the exact path of each difference.
Does it handle arrays?
Arrays are compared as values. If you reorder elements, they will show as changed. For order-insensitive comparison, sort the arrays before pasting.