Online Developer Toolbox: 172 Browser-Based Utilities

🛠️Developer Utilities41 tools

🔐
TOTP One-Time Password
✈️
Subscription Converter
{}
JSON Formatter
TS
JSON to TypeScript
Go
JSON to Go Struct
↹
JSON Flatten & Restore
JS
JSON Schema Validator
$.
JSONPath Query
YML
YAML Validator & Formatter
ENV
.env / JSON Converter
CSV
CSV / JSON Converter
XML
XML Validator & Formatter
🔑
JWT Decoder
🍪
Cookie / Set-Cookie Parser
.*
Regex Tester
⌖
XPath / CSS Selector Tester
🕒
Timestamp Converter
16
Number Base Converter
64
Base64 Encoder / Decoder
🔗
URL Encoder / Decoder
🧭
URL Parser
🆔
UUID Generator
🎲
Random String Generator
🔒
Password Generator & Strength Test
📡
HTTP Status Codes
⏰
Crontab Builder & Parser
v1
SemVer Comparison
💾
SQL Formatter
📱
User-Agent Parser
🐚
curl to Code
API
OpenAPI Request Example Generator
🌿
Git Command Builder
🐳
Docker Compose Builder
🔌
WebSocket Tester
🚀
REST Client
&
HTML Entity Converter
🔑
htpasswd Generator
🛡️
Shield Badge Builder
🧱
CSP Policy Builder
🛡
HTTP Security Header Check
🌈
Syntax Highlighter

💻Development Environments24 tools

🟦
VS Code
✨
Trae
🤖
Cursor
💎
JetBrains
🟧
Sublime Text
💚
Vim
👓
Neovim
⚡
Zed
🌳
HBuilderX
🐍
Python
🟢
Node.js
🔵
Go
🦀
Rust
☕
Java JDK
🐘
PHP
💎
Ruby
🟣
.NET SDK
📦
npm
📦
pnpm
🥟
Bun
🦕
Deno
🐳
Docker
📜
Git
🍺
Homebrew

📝Text Tools18 tools

Aa
Case Converter
☷
Text Line Tools
M↓
Markdown Editor
📊
Mermaid Diagram Editor
🔐
Text Encrypt / Decrypt
0x
Hex String Converter
#
Word Counter
🔄
Text Diff
··--
Morse Code
￥
Chinese Amount Converter
👽
Martian Text Converter
简
Traditional / Simplified Chinese
U+
Unicode Character Inspector
🕶️
Data Masking
╁
ASCII Table Generator
🎨
ASCII Art
🚫
Sensitive Word Checker
🎤
Teleprompter

📄Document Tools8 tools

🖇️
Merge PDF
✂️
Split PDF
🔄
Rotate PDF
#
Add PDF Page Numbers
💧
Add PDF Watermark
📄
Extract PDF Pages
🖼️
Images to PDF
📝
Batch File Renamer

🖼️Image Tools21 tools

📝
Image Text Recognition
🗜️
Image Compressor & Converter
◇
SVG Viewer & Optimizer
🎨
Image Palette Extractor
🔳
QR Code Generator
▣
QR Code Reader
|||
Barcode Generator
💧
Add Image Watermark
📐
Image Cropper
🖨️
Image Print Preview
🎞️
Image Stitcher
🧩
Image Slicer
💠
Favicon Maker
📱
App Icon Maker
64
Image Base64 Converter
ℹ️
Image Metadata
✍️
Electronic Signature
👤
Avatar Generator
🖼️
Placeholder Image Generator
📧
Email Image Builder
📏
Image Spec Inspector

🎬Audio & Video3 tools

🎵
Audio Cutter
🎙️
Audio Recorder
📝
Subtitle Format Converter

🔥Operations3 tools

rwx
Linux Permission Calculator
🔗
Punycode Converter
💾
Disk Partition Planner

🛡️Network & IP20 tools

🌐
Advanced Network Inspector
DNS
DNS Lookup
📍
IP Geolocation
📡
CIDR Calculator
.com
Top-Level Domain Lookup
🚀
Bandwidth Calculator
IP
IPinfo
🛡️
Scamalytics
IQ
IPQS
🚫
AbuseIPDB
💧
IP Pure
📶
Ping0
API
ip-api
🌏
IP.SKK.MOE
✓
IPCheck.ing
☕
IP.net.coffee
🔍
BrowserLeaks
🕵️
Whoer
DNS
DNSLeakTest
💧
IPLeak.net

🎨Design Utilities7 tools

SEO
SEO / Open Graph Meta Tags
🎨
Color Picker
◐
Color Contrast Checker
CSS
CSS Effect Generator
↔️
CSS Unit Converter
📝
Grid Paper Generator
🖌️
Online Whiteboard

🎓Academic Tools4 tools

🧮
Calculator
¼
Fraction Calculator
📏
Unit Converter
✍️
Practice Sheet Generator

🔍Reference & Calculators15 tools

💱
Currency Converter
💰
Income Tax Calculator
🏠
Mortgage Calculator
📅
Date Difference Calculator
📄
Paper Size Reference
👕
Clothing Size Converter
📦
Shipping Box Sizes
♈
Zodiac Sign Lookup
👨‍👩‍👧‍👦
Chinese Kinship Calculator
🩸
Blood Type Personality
📅
Today in History
🏷️
Name Ideas
🍴
What Should I Eat?
★
Special Symbols
🗣️
Pronunciation Coach

🎵Music Tools2 tools

🥁
Metronome
🎸
Guitar Tuner

🧩Other Tools6 tools

⏲️
Multi-Timer
🪙
Coin Flip
#
Text Hash / HMAC
🧲
Torrent File Parser
🗺️
Coordinate Converter
🔗
Short Link Converter
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