Tools
Lightweight utilities built for speed and clarity. One tool per page.
JSON to YAML Converter
A simple, browser-based JSON to YAML converter. It takes a JSON payload and converts it to YAML.
JSON to CSV Converter
Convert a JSON object or array of objects into downloadable CSV in one click.
Count Duplicates in a List
Aggregate lines and count occurrences. Find duplicate lines or count repeats in Excel columns.
Generate Calendar Dates
Generate a sequence of calendar dates with customizable start date, interval, count, and output format.
UTF-8 Encoder/Decoder
Encode text to UTF-8 \xNN byte sequences or decode \xNN sequences back to text.
ASCII Table
Complete ASCII character table with decimal, hex, octal, and HTML entity values.
Hex to UTF-8 Converter
Convert hexadecimal byte sequences to UTF-8 text and vice versa.
CORS Test
Test CORS headers and make cross-origin HTTP requests with custom methods and headers.
JSON Schema Validator
Validate JSON data against a JSON Schema with support for Draft 2020-12, Draft 2019-09, Draft 7, and earlier.
Diff Checker
Compare two text blocks line-by-line and highlight differences with added, removed, and unchanged lines.
PHP print_r to JSON
Convert PHP print_r output back to valid JSON format.
View Character Codes
View decimal, hexadecimal, octal, and UTF-8 byte values for any character or text.
Real-time HTML Editor
Type HTML and see the result instantly in a live preview pane.
WebSocket Tester
Test WebSocket connections by connecting to ws:// or wss:// endpoints and sending/receiving messages in real-time.
UUID Generator
Generate UUIDs (v4 random or v7 timestamp-based) with configurable quantity, case, and formatting options.
Fake Mailer
Create fake email messages with custom sender, recipient, subject, attachments, and HTML or plain text content.
DNS Typosquat Scanner
Scan for typosquatting and similar domains - generate variants and check DNS resolution to find potentially malicious domains.
DNS Lookup
Look up DNS records (A, AAAA, MX, NS, TXT, CNAME, SOA) for any domain using Google DNS-over-HTTPS.
World Time Buddy
Compare timezones side-by-side with live clocks and a 24-hour grid to find the best meeting times across locations.
IP Bulk Lookup
Lookup domain, location, ISP and ASN for multiple hosts (IPs or domains) at once. Supports optional DNS record lookup.
Campaign URL Builder
Build custom campaign URLs with UTM parameters for tracking marketing campaigns in Google Analytics.
Markdown Editor
A simple markdown editor with a live preview.
JWT (JSON Web Token) Decoder
Decode and inspect JWT tokens to see the header, payload, and signature. Perfect for debugging authentication.
Regular Expression (RegEx) Tester
Test regular expressions against text in real-time with syntax highlighting, capture groups, and flag support.
Cron Expression Generator
Build and translate cron schedule expressions into human-readable text. Makes scheduling recurring tasks easy.
SQL Formatter
Format and indent your messy SQL queries to make them readable. Supports multiple SQL dialects.
Number Base Converter
Convert numbers between Decimal (base 10), Hexadecimal (base 16), Binary (base 2), and Octal (base 8) instantly.
Unix Timestamp Converter (Epoch Converter)
Convert human-readable dates to Unix timestamps (epoch) and vice versa. Includes a live current epoch display with a 'Get Current Epoch' button.
Bcrypt Hash Generator & Verifier
Generate secure bcrypt hashes from plaintext or verify existing hashes instantly.
YAML to TOML Converter
Instantly convert your YAML configuration data into clean, valid TOML format. Fast, free, and completely client-side.
What is my IP
Quickly find your public IP address. The simplest and fastest way to see your public-facing IP.
URL Encoder/Decoder
Encode or decode strings to and from URL-encoded format (percent-encoding).
HTTP Status Code Reference
A quick, searchable index of all standard HTTP response status codes. Quickly identify the meaning behind 200, 404, 500, and more.