Formatter Tools
10 free formatter tools that run entirely in your browser.
JSON Formatter & Validator
Format, validate, and beautify JSON data with syntax highlighting.
Markdown Preview
Write Markdown and see a live rendered preview side by side.
SQL Formatter
Format and beautify SQL queries for better readability.
JSON Tree Viewer
Visualize JSON data as an interactive collapsible tree.
XML Formatter
Format and minify XML documents with proper indentation.
JavaScript Beautifier
Beautify and format minified JavaScript code with proper indentation.
CSV Viewer
View CSV data as a sortable table with instant column sorting.
JSON Sort Keys
Sort JSON object keys alphabetically, recursively.
SQL EXPLAIN Formatter
Format EXPLAIN plans as an indented tree and flag costly operations.
GraphQL Formatter
Format and indent GraphQL queries, mutations, and schemas.
About formatter tools
These 10 formatter tools cover the tasks developers reach for most. Each one runs client-side, so your input never leaves your device and every tool works offline after the first visit. No account, no upload, no tracking.