Developer Tools
Developer utilities: .env editor, CSV viewer, semver calculator, git commands, Dockerfile linter, and more.
📋
.env Editor
Parse, edit, diff, and export .env files with duplicate detection
📄
CSV Viewer & Editor
Parse, edit, sort, filter CSV data and export as JSON, TSV, or Markdown
🔢
Semver Calculator
Test semver ranges, compare versions, and explore version range syntax
🌿
Git Command Builder
Interactive git command constructor with 40+ operations and explanations
🚫
.gitignore Generator
Generate .gitignore files for any language, framework, or IDE
📖
README Generator
Build professional README.md files with badges, sections, and templates
🔄
GitHub Actions Validator
Validate GitHub Actions workflow YAML with error detection and best practices
🐳
Dockerfile Linter
Lint Dockerfiles for best practices, security issues, and optimization tips
📡
OpenAPI Validator
Validate and visualize OpenAPI/Swagger specs with endpoint cards and schema browser
📝
Changelog Generator
Generate changelogs from git commits using conventional commit format
📦
package.json Analyzer
Analyze package.json for issues, typosquatting risks, and dependency insights
📋
JSON Schema Generator & Validator
Infer JSON Schema from data or validate JSON against a schema with detailed error reports
🌐
IP / CIDR Calculator
Calculate network address, broadcast, subnet mask, wildcard, and usable host range from any IPv4 CIDR notation.
🔒
chmod Calculator
Interactive Unix file permission calculator with octal and symbolic notation
🎮
Code Playground
Browser-based HTML, CSS & JavaScript editor with live preview and console
📧
Email Normalizer
Normalize email addresses — remove dots, plus-tags, and vendor quirks
⏱️
Chronometer
Stopwatch with lap tracking, split times, and millisecond precision
🌐
IPv6 ULA Generator
Generate random IPv6 Unique Local Addresses (fd00::/8)
📊
IPv4 Range to CIDR
Convert IP ranges to CIDR notation and calculate total IPs
⏳
ETA Calculator
Calculate estimated time remaining for long-running tasks
🐳
Docker Run to Compose
Convert docker run commands to docker-compose.yml
🔍
User Agent Parser
Parse and analyze browser user agent strings
🔎
JSONPath Tester
Test JSONPath expressions against JSON data with result highlighting
📎
MIME Type Lookup
Search MIME types by extension or type name — 200+ types
🔢
Bitwise Calculator
Calculate AND, OR, XOR, NOT, and shifts with visual bit representation
📧
Email Preview
Preview HTML email templates with desktop/mobile viewports and dark mode
⏱️
Process Scheduler
Visualize CPU scheduling algorithms: FCFS, SJF, SRTF, Round Robin, Priority
🧮
Memory Address Converter
Convert memory addresses between hex, decimal, and binary with pointer arithmetic
🔍
HTTP Header Inspector
Parse and analyze raw HTTP headers with descriptions
🔢
CRC Calculator
Calculate CRC-8, CRC-16, and CRC-32 checksums with multiple presets