Developer Tools
That Respect Your Privacy
42 tools. All processing runs entirely in your browser. Your data never leaves your device.
Formatters
JSON Formatter
Validate, format, and minify JSON with syntax highlighting
XML Formatter
Pretty-print and validate XML with collapsible nodes
CSS Formatter
Beautify or minify CSS stylesheets instantly
SQL Formatter
Format SQL queries with dialect-aware indentation
YAML Formatter
Validate, format, and convert YAML with error highlighting
Converters
Base64 Encode / Decode
Encode text or files to Base64 and decode Base64 strings
URL Encode / Decode
Percent-encode URLs or decode encoded URL strings
JSON ↔ YAML
Convert between JSON and YAML formats instantly
Color Converter
Convert between HEX, RGB, HSL color formats with live preview
SQL to Prisma Schema
PROConvert raw SQL CREATE TABLE statements into Prisma schema models
YAML to CSV
Convert lists of objects between YAML and CSV formats.
JSON ↔ CSV
Convert between JSON arrays and CSV format
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates
Number Base Converter
Convert numbers between Binary, Octal, Decimal, and Hexadecimal
Markdown → HTML
Convert Markdown to clean HTML — supports GitHub Flavored Markdown
Text ↔ Binary
Convert text to binary and binary back to text
Encoders
HTML Entity Encode / Decode
Encode special characters to HTML entities and decode back
Image ↔ Base64
Convert images to Base64 strings and Base64 strings back to images
Validators
Text Utilities
Text Diff Checker
Compare two text inputs and highlight differences
Markdown Preview
Write Markdown and preview rendered HTML in real time
Text Case Converter
Convert text to UPPER, lower, Title, camelCase, snake_case, and more
Word & Character Counter
Live word, character, sentence, and paragraph counts with reading time
Duplicate Line Remover
Remove duplicate lines from text with customizable matching options
String Escape / Unescape
Escape and unescape strings for JavaScript, HTML, URL, and JSON
Generators
UUID Generator
Generate UUID v1, v4, or v5 — bulk or single
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text or file
Password Generator
Generate strong passwords with custom rules and entropy meter
QR Code Generator
Generate QR codes from text, URLs, or WiFi credentials
Lorem Ipsum Generator
Generate placeholder text — paragraphs, sentences, or words
JWT Encoder
PROSecurely generate and signJSON Web Tokens (JWT) using HMAC SHA-256
Minifiers
Reference
HTTP Status Code Reference
Search and explore all HTTP status codes with descriptions
Regex Cheat Sheet
Quick reference for regex syntax, flags, and common patterns
42
Free Tools
0
Server calls
100%
Client-side
∞
Forever free
What is AnsaTools?
AnsaTools is a comprehensive suite of free, privacy-first developer tools built by AnsaSolutions. Every tool runs entirely in your browser — your data is never sent to any server, ensuring complete privacy and security for sensitive information like API keys, SQL queries, and authentication tokens.
Our growing collection of 42+ tools covers essential developer workflows including JSON formatting and validation, Base64 encoding and decoding, SQL query formatting with dialect-aware capitalization, URL encoding and decoding with automatic query parameter parsing, regular expression testing with live highlighting, and cryptographic hash generation. We also offer color conversion between HEX, RGB, and HSL formats with WCAG contrast checking, JWT token decoding and encoding, QR code generation, password generation, and many more utilities.
Whether you are debugging a REST API response, formatting a complex SQL query for a code review, validating a regular expression, or generating a secure password, AnsaTools provides the right tool — instantly, privately, and with zero setup. All tools work offline as a Progressive Web App (PWA), so you can install AnsaTools and use it even without an internet connection.
Formatters & Validators
JSON, XML, CSS, SQL, YAML formatters with syntax highlighting and instant error detection.
Encoders & Converters
Base64, URL, HTML entities, color formats, JSON-YAML, JSON-CSV, and more — all bidirectional.
Generators & Utilities
UUID, hash, password, QR code generators. Regex tester, text diff, JWT decoder, and more.