> All Tools
113 free utilities for developers and QA engineers. No signup required.
Formatters
9 toolsJSON Formatter
Format, validate, and beautify JSON
XML Formatter
Pretty print XML documents
YAML Formatter
Format YAML with validation
SQL Formatter
Beautify SQL queries
HTML Formatter
Prettify HTML markup
CSS Formatter
Format CSS/SCSS/LESS
JavaScript Formatter
Format JS/TS code
Log Parser
Parse and analyze log files
Email HTML Renderer
Preview HTML emails with compatibility checks
Generators
17 toolsUUID Generator
Generate UUID v1, v4, v5, NIL
Password Generator
Secure password with options
Lorem Ipsum Generator
Placeholder text generator
Fake Data Generator
Names, emails, addresses
Hash Generator
MD5, SHA-1, SHA-256, SHA-512
HMAC Generator
Generate and verify HMAC signatures
QR Code Generator
Generate QR codes from text
Color Palette Generator
Random color schemes
Slug Generator
URL-friendly slugs
Gradient Generator
CSS gradient creator
Box Shadow Generator
CSS box-shadow builder
Meta Tag Generator
SEO meta tags
.htaccess Generator
Apache configuration
Placeholder Image
Custom placeholder images
Invoice PDF Generator
Create invoices as PDF
Test Credit Card Generator
Luhn-valid test card numbers
Random User Agent Generator
Realistic test user agent strings
Converters
16 toolsJSON ↔ CSV
Bidirectional conversion
JSON ↔ XML
Bidirectional conversion
JSON ↔ YAML
Bidirectional conversion
Base64 Encoder
Encode/decode Base64
URL Encoder
Encode/decode URLs
HTML Entity Encoder
Encode HTML entities
Timestamp Converter
Unix ↔ human readable
Number Base Converter
Binary, hex, octal, decimal
Color Converter
HEX, RGB, HSL conversion
Unit Converter
Bytes, time, length
Aspect Ratio Calculator
Calculate and resize ratios
Text Case Converter
camelCase, snake_case, etc.
Byte Size Converter
KB, MB, GB conversions
JSON/CSV to SQL
Convert JSON or CSV data to SQL INSERT statements
JSON to TypeScript, Go & Java Converter
Generate TS types, Go structs or Java POJOs from JSON
cURL to Code Converter
Convert cURL commands to code
Analyzers
1 toolsValidators
13 toolsRegex Tester
Test regex with highlights
JSON Schema Validator
Validate against schema
Cron Expression Validator
Parse & preview cron
Email Validator
Validate email format
Credit Card Validator
Luhn algorithm check
Phone Number Validator
International formats
URL Validator
Validate URL format
IP Address Validator
IPv4/IPv6 validation
IBAN Validator
IBAN mod-97 + 89-country checks
Regex Builder
Visual regex builder with match highlighting and pattern library
XPath Tester
Test XPath with live match highlighting
Password Strength Tester
Entropy, 0–4 score, crack-time estimates
Gherkin Validator
Validate Cucumber feature file syntax
Diff & Compare
5 toolsEncoders
5 toolsNetwork
10 toolsHTTP Header Checker
Inspect response headers
Website Status Checker
Check if a site is up or down
DNS Lookup
Domain DNS records
CORS Tester
Test CORS policies
SSL Certificate Checker
Check SSL/TLS certificates
Webhook Tester
Receive & inspect webhooks
WHOIS Lookup
Domain registration info
CSP Builder
CSP header generator
SSL/TLS Config Generator
SSL/TLS config generator
HTTP API Tester
Send HTTP requests, inspect responses
Reference
1 toolsMinifiers
3 toolsSEO Tools
6 toolsLegal
5 toolsImage Tools
4 toolsAccessibility
3 toolsTesting
3 toolsUtilities
6 toolsFile Tools
6 toolsImage Format Converter
Convert between popular image formats
CSV/Excel Viewer & Editor
View, edit, sort, and filter spreadsheet files
Document to PDF Converter
Convert HTML, Markdown, and text into PDF
PDF to Word/Excel Converter
Extract PDF text into editable Word or Excel files
Video to GIF Converter
Convert video clips to animated GIFs and back
Image Background Remover
Remove photo backgrounds directly in the browser