Developer Tools, Instantly
39+ free utilities that run in your browser. No sign-up, no tracking, no data leaves your machine.
Base64 Encode / Decode
Encode or decode text and files using Base64
URL Encode / Decode
Percent-encode or decode URL components
HTML Entity Encode / Decode
Convert special characters to HTML entities and back
JWT Decoder
Decode and inspect JSON Web Tokens
JSON Formatter / Validator
Format, validate, and minify JSON data
YAML Formatter / Validator
Format and validate YAML documents
SQL Formatter
Format SQL queries with proper indentation
Regex Tester
Test regular expressions with live highlighting
Cron Expression Builder
Build and explain cron schedule expressions
Markdown Preview
Live preview of Markdown content
UUID Generator
Generate UUIDs (v4 and v7)
Password Generator
Generate strong random passwords
Lorem Ipsum Generator
Generate placeholder text for designs
QR Code Generator
Generate QR codes from text or URLs
Fake Data Generator
Generate realistic fake names, emails, and addresses
JSON ↔ YAML Converter
Convert between JSON and YAML formats
Timestamp Converter
Convert between Unix timestamps, ISO 8601, and human-readable dates
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal
Color Converter
Convert between HEX, RGB, HSL, and CSS color formats
Case Converter
Convert text between camelCase, snake_case, kebab-case, and more
CSV ↔ JSON Converter
Convert between CSV and JSON formats
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes
Hash Identifier
Identify hash types from hash strings (MD5, SHA, bcrypt, etc.)
YARA Rule Generator
Generate YARA rules for malware and threat detection
Bcrypt Hash / Verify
Generate and verify bcrypt password hashes
HMAC Generator
Generate HMAC signatures with various algorithms
CIDR Calculator
Calculate IP ranges, subnet masks, and network details
CVE Lookup
Look up Common Vulnerabilities and Exposures by ID
SSL Certificate Decoder
Decode and inspect PEM-encoded SSL/TLS certificates
IP Address Info
Get details about your current IP address
Text Diff
Compare two texts and highlight differences
Word Counter
Count words, characters, sentences, and paragraphs
String Escape / Unescape
Escape and unescape strings for various languages
Docker Compose → K8s / Helm
Convert docker-compose.yml to Kubernetes manifests or Helm values
Dockerfile Linter
Lint Dockerfiles for best practices and security
K8s Manifest Validator
Validate Kubernetes YAML manifests for common issues
Nginx Config Generator
Generate nginx configurations for common use cases
chmod Calculator
Calculate Unix file permissions in octal and symbolic notation
YAML / JSON / .env Converter
Convert between YAML, JSON, and .env file formats