Code Formatters & Beautifiers
Formatters turn minified, machine-generated, or hand-mangled code back into something a human can read — and minifiers do the reverse for production. Every tool here runs locally in your browser, so API responses, SQL with real table names, or config files with secrets never leave your machine.
Most of these also validate as they format: a JSON formatter that pinpoints the exact line of a syntax error, an XML formatter that catches unclosed tags, an SQL formatter that understands 14 dialects. Paste, read, copy — no account, no upload.
13 format tools
JSON Formatter
Format, validate and minify JSON instantly
NDJSON / JSON Lines Formatter & Validator
Validate and pretty-print newline-delimited JSON, or convert to/from a regular JSON array
Markdown Preview
Write and preview Markdown in real time
SQL Formatter
Format or minify SQL across 14 dialects, including SQL Server, Oracle, and Snowflake
HTML Formatter
Prettify and minify HTML markup instantly
Word Counter
Count words, characters, sentences, and estimate reading time
SVG Optimizer
Strip editor cruft and shrink SVG file size — entirely in your browser
Image Compressor
Compress and resize JPEG, PNG, and WebP images entirely in your browser
Image EXIF Viewer & Remover
See exactly what metadata is embedded in a photo — camera info, timestamp, GPS location — and strip it before sharing
GraphQL Query Formatter
Format and minify GraphQL queries, mutations, and fragments
XML Formatter
Prettify, minify, and validate XML with CDATA-safe formatting
List Sorter & Deduplicator
Sort, dedupe, shuffle, and clean up lists of text lines
JavaScript / TypeScript Formatter & Minifier
Beautify or minify JS and TS code instantly — powered by Prettier and Terser
Guides
🧹 Why Your SVG Exports Are 6× Bigger Than They Need to Be
A 500-byte icon can leave Figma or Illustrator as 3KB of editor metadata, redundant precision, and XML cruft. Most exported SVGs can shrink 40-80% with zero visible difference.
🧩 Unexpected Token in JSON: Every Cause and How to Fix It
SyntaxError: Unexpected token in JSON at position N is the most common JSON error in JavaScript. Here's every real-world cause — from HTML error pages to trailing commas to BOM characters — and the fix for each.
📊 CSV vs JSON: When to Use Which (and How to Convert Between Them)
CSV and JSON solve different problems — one is tabular, one is hierarchical. Here's how to decide which format fits your use case, plus the common pitfalls when converting between them.
🎲 Mock Data for API Testing: How to Generate Realistic Test Data Without a Real Backend
Waiting on a backend, real data, or production access shouldn't block frontend work or test coverage. Here's how and when to use generated mock data — and where it falls short.
🗄️ SQL Incorrect Syntax Near — Complete Fix Guide for Reserved Word Errors
SQL syntax errors near keywords are almost always caused by using SQL reserved words as column or table names without quoting them. Learn how to identify reserved words, quote them correctly, and fix the most common cases.
🗄️ MySQL Error 1064: You Have an Error in Your SQL Syntax Fix
MySQL Error 1064 means the SQL parser hit something it didn't expect. Learn the most common causes — reserved words, quoting mistakes, missing commas — and how to fix them fast.