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Developer & data utilities — converters, generators and more. Pay only for what you use.

173 tools available

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Text & writing
Case Converter Free
Prefix & Suffix Lines Free
Diff Checker / Text Compare Free
Lorem Ipsum Generator Free
Markdown Preview & HTML Converter Free
Converters
Code to Image Converter Free
World Date & Time Formats Free
JSON ↔ YAML Free
JSON Formatter Free
CSV → JSON Free
JSON → CSV Free
Base64 Encode / Decode Free
Image to Base64 Converter Free
URL Encode / Decode Free
SQL Formatter & Beautifier Free
XML Formatter & Beautifier Free
HTML Entity Encoder & Decoder Free
JSON to Code Generator Free
Slugify — URL Slug Generator Free
String Escape & Unescape Free
HTML to Markdown Converter Free
Archive Files Converter Free
Font Converter Free
HTML to JSX Converter Free
URL Parser & Query Builder Free
Data & spreadsheets
Spreadsheet Converter Free
Spreadsheet Cleaner Free
Excel ↔ JSON / XML Free
Merge Excel Files Free
Split Spreadsheet Free
Remove Duplicate Rows Free
Compare Two Spreadsheets Free
Transpose & Pivot Free
Column Tools Free
CSV Delimiter Converter Free
Spreadsheet → HTML Table Free
Sheet Statistics Free
Find & Replace / Bulk Edit Free
Generators
Email Signature Builder Free
Icon to PNG Free
App Icon Generator Free
Favicon Generator Free
CSS Box Shadow Generator Free
CSS Border Radius Generator Free
CSS Gradient Generator Free
Glassmorphism Generator Free
Neumorphism Generator Free
Flexbox Playground Free
Bootstrap Flex Playground Free
Bootstrap Grid Playground Free
CSS Grid Playground Free
Cubic-Bézier Easing Editor Free
Fake Data Generator Free
QR Code Generator Free
QR Code Scanner Free
Online Whiteboard Free
Barcode Generator Free
Chart Maker Free
UUID / ULID Generator Free
Password Generator Free
Hash Generator Free
Image to ASCII Art Free
Developer utilities
Code Formatter Free
Code Minifier Free
Array Formatter Free
Regex Tester Free
Cron Expression Builder Free
JWT Decoder Free
Timestamp Converter Free
ASCII / Unicode List Free
MIME Type List Free
Exit Codes Reference Free
Linux Signals Free
Regex Token Reference Free
Markdown Syntax Reference Free
Git Command Reference Free
chmod Calculator Free
Morse Code Translator Free
Braille Translator & Reference Free
ASL Fingerspelling Alphabet Free
Language Codes (ISO 639) Free
Diacritics & Accent Reference Free
Country Info Directory Free
Currency Codes (ISO 4217) Free
International Dialing Codes Free
cURL to Code Converter Free
JavaScript Tester Free
JavaScript Obfuscator Free
Error Code Lookup Free
Timezone Directory Free
Cheat sheets
JavaScript Cheat Sheet Free
PHP Cheat Sheet Free
MySQL Cheat Sheet Free
Python Cheat Sheet Free
Shell Cheat Sheet Free
SSH Cheat Sheet Free
CSS Cheat Sheet Free
Vim Cheat Sheet Free
Excel Cheat Sheet Free
VS Code Cheat Sheet Free
Claude Code Cheat Sheet Free
Git Cheat Sheet Free
Regex Cheat Sheet Free
Keyboard Shortcuts Free
cURL Cheat Sheet Free
SASS Cheat Sheet Free
jQuery Cheat Sheet Free
PowerShell Cheat Sheet Free
Docker Cheat Sheet Free
Bootstrap Cheat Sheet Free
Laravel Cheat Sheet Free
React Cheat Sheet Free
TypeScript Cheat Sheet Free
Java Cheat Sheet Free
C++ Cheat Sheet Free
Go Cheat Sheet Free
Rust Cheat Sheet Free
HTML Cheat Sheet Free
Markdown Cheat Sheet Free
Tailwind CSS Cheat Sheet Free
Emmet Cheat Sheet Free
PostgreSQL Cheat Sheet Free
SQL Joins Cheat Sheet Free
Google Sheets Formula Cheat Sheet Free
Kubernetes / kubectl Cheat Sheet Free
GitHub Actions Cheat Sheet Free
tmux Cheat Sheet Free
Big-O Cheat Sheet Free
System & device
User-Agent Parser Free
What Is My IP Free
Internet Speed Test Free
Screen Resolution Checker Free
Monitor Refresh Rate Test Free
Dead Pixel Test Free
Mic Test Free
Webcam Test Free
Keyboard Tester Free
Mouse Tester Free
Web & SEO
HTTP Status Codes Free
HTTP Methods Free
HTTP Headers Reference Free
DNS Record Types Free
TCP/UDP Port Numbers Free
Subnet / CIDR Calculator Free
CSS Units Reference Free
File Signatures (Magic Numbers) Free
HTML Color Names Free
HTML Entities Directory Free
TLD Directory Free
Meta Tag Generator Free
Open Graph Generator Free
Schema.org / JSON-LD Generator Free
robots.txt Generator Free
XML Sitemap Generator Free
SEO Traffic & Value Calculator Free
SEO Title & Description Length Checker Free
DNS Lookup Free
WHOIS Lookup Free
SSL Checker Free
HTTP Header Checker Free
SPF Record Generator & Checker Free
DKIM Record Generator & Checker Free
DMARC Record Generator & Checker Free
Email Address Validator Free
UTM Link Builder Free
.htaccess Generator Free
.htpasswd Generator Free
.gitignore Generator Free
Privacy Policy Generator Free
Terms & Conditions Generator Free
Cookie Policy Generator Free
AI & Prompts
AI Prompt Generator Free
AI Prompt Optimizer Free
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