Developer & Code
Format JSON, encode Base64, test regex, inspect JWTs, and code formatters.
JSON Formatter & Validator
Format, beautify, validate, and minify JSON data with instant error detection.
Base64 Encoder & Decoder
Encode text into Base64 format or decode Base64 strings back to UTF-8 text.
JWT Token Decoder & Inspector
Decode JSON Web Tokens (JWT) to inspect header, payload claims, and expiration dates securely in your browser.
URL Percent Encoder & Decoder
Encode special characters in URLs with percent-encoding (%20) or decode percent-encoded URLs back to readable text.
UUID / GUID v4 Generator
Generate cryptographically secure random UUID v4 and GUID identifiers individually or in bulk.
Hash Generator (SHA-256, SHA-1, SHA-512)
Compute SHA-256, SHA-1, SHA-384, and SHA-512 cryptographic hashes of any string directly in your browser.
Unix Timestamp Converter
Convert epoch Unix timestamp seconds and milliseconds into human-readable UTC and local date formats.
HTML Formatter & Minifier
Beautify messy HTML code with proper indentation or minify it to reduce webpage loading size.
CSS Formatter & Minifier
Format, indent, and organize CSS stylesheets or minify CSS to save bandwidth and boost Core Web Vitals.
SQL Query Formatter
Format and indent complex SQL queries with standard uppercase keywords and readable line breaks.
Color Converter (HEX, RGB, HSL)
Convert color codes seamlessly between HEX, RGB, RGBA, and HSL formats with live color preview.
CSV to JSON Converter
Convert spreadsheet CSV rows and tables into structured JSON arrays of objects instantly in your browser.
XML Formatter & Beautifier
Format, indent, and beautify XML feeds and sitemaps with proper nested tags and clean line breaks.
HTML Entities Encoder
Convert reserved characters like <, >, &, ", and ' into their safe HTML entity equivalents (<, >, &).
HTML Entities Decoder
Decode HTML entity strings (&, <, >, ") back into original characters.
Linux Chmod Permissions Calculator
Visually calculate octal (755, 644) and symbolic (rwxr-xr-x) file and directory permissions for Linux/Unix servers.
Interactive HTTP Status Codes Reference
Quickly look up meanings, browser implications, and fix suggestions for HTTP status codes (200, 301, 404, 500, 503).
YAML to JSON Converter
Convert Kubernetes, Docker Compose, and CI/CD YAML configuration files into formatted JSON objects.
JSON to YAML Converter
Convert structured JSON data arrays and objects into clean, readable YAML configuration syntax.
Online Regular Expression (Regex) Tester
Test and debug JavaScript Regular Expressions in real-time with instant match highlighting and group capture.
Online Tone & Frequency Sound Generator
Generate pure sine, square, sawtooth, and triangle audio frequencies from 20 Hz to 20,000 Hz in real-time.
Acoustic & Electric Guitar String Tuner
Play reference standard tuning pitches for all 6 guitar strings (E2, A2, D3, G3, B3, E4) to tune your instrument accurately.
In-Browser Voice & Audio Recorder
Record high quality audio and voice notes directly through your browser microphone with instant download.
Microphone Decibel Sound Level Meter
Measure ambient room volume and microphone input audio levels in decibels (dB) in real-time.
Audio Waveform & Spectrum Visualizer
Visualize sound waves and frequency spectrums in real-time with responsive Canvas animations.
Audio Trimmer & Cutter
Trim, crop, or cut unwanted start and end sections from audio tracks directly in your browser.
Audio Speed & Pitch Shifter
Speed up or slow down audio playback and transpose pitch higher or lower without distortion.
Reverse Audio Player & Exporter
Play audio tracks backward or create reversed sound effects for creative editing.
Live Markdown to HTML Converter
Convert GitHub-flavored Markdown text to clean, semantic HTML code with instant live preview.
HTML to Markdown Converter
Convert HTML tags, articles, and rich text snippets into clean, portable Markdown syntax.
Text & Code Diff Comparison Checker
Compare two texts or code files side-by-side to highlight added, removed, and modified lines.
SEO Friendly URL Slug Generator
Convert article titles and headlines into clean, URL-safe slugs with Arabic transliteration support.
Morse Code Audio Tone Player
Listen to real audio beeps for Morse code dots and dashes with adjustable playback speed and pitch.
IPv4 Subnet & CIDR Mask Calculator
Calculate network address, broadcast address, netmask, wildcard, and usable host IP ranges for any CIDR block.
IPv6 Address Expander & Compressor
Expand shortened IPv6 addresses to full 8-hextet zero-padded representation or compress to RFC standard format.
Browser User-Agent String Parser & Inspector
Parse your current or custom browser User-Agent string to detect OS, browser engine, hardware device, and version.
Screen Resolution & Device Display Tester
Inspect your active screen resolution, viewport width and height, device pixel ratio (DPR), and color depth.
HTTP Cookie String Header Parser
Parse raw HTTP document.cookie strings into clean, sorted key-value pairs with instant JSON export.
Crontab Expression Generator & Explainer
Build cron expressions easily and understand exactly when and how often tasks will run in human language.
DNS Record Generator & Guide (A, CNAME, MX, TXT)
Configure and generate standard DNS records (A, AAAA, CNAME, MX, TXT, SPF, DKIM) for domain setups.
Robots.txt SEO File Generator
Generate custom, search-engine friendly robots.txt directives to control crawler indexing and specify sitemaps.
XML Sitemap File Generator for SEO
Build valid XML sitemaps from URL lists with customizable change frequency and crawl priority values.
Open Graph & Twitter Meta Tag Generator
Generate complete Open Graph and Twitter Card social preview meta tags with live social preview mockup.
Schema.org JSON-LD Rich Snippet Generator
Create Google rich result structured data in JSON-LD format for Articles, FAQs, Products, and Organizations.
SQL Query Formatter & Beautifier
Format, uppercase keywords, and indent messy SQL database queries for improved readability.
Interactive Visual Markdown Table Generator
Build and edit Markdown tables in a visual spreadsheet-like grid with instant column alignment.
Base58 Encoder & Decoder (Bitcoin / IPFS)
Encode and decode text to and from Base58 alphanumeric format used in cryptocurrency and decentralized networks.
HMAC Generator (Keyed-Hash)
Compute cryptographic Hash-based Message Authentication Codes (HMAC-SHA256, HMAC-SHA512) using a secret key.
JSON to CSV & Excel Converter
Transform JSON arrays and object collections into clean CSV format ready for import into Microsoft Excel or Google Sheets.
ASCII ↔ Binary ↔ Hex ↔ Decimal
Convert text strings to Binary (0101), Hexadecimal (0x), Decimal, and vice versa in real time.
URL Parser & Query String Inspector
Deconstruct any complex URL into protocol, hostname, port, pathname, hash, and decoded query parameters table.
Keyboard KeyCode & Event Tester
Press any key on your keyboard to instantly reveal its JavaScript event properties: e.key, e.code, e.which, and keyCode.
Docker Run to Docker Compose Converter
Paste complex 'docker run' terminal commands with ports, volumes, and env variables to instantly generate clean docker-compose.yml files.
Bcrypt Hash Generator
Hash and verify passwords using bcrypt algorithm
BIP39 Mnemonic Generator
Generate BIP39 seed phrases for crypto wallets
ULID Generator
Generate Universally Unique Lexicographically Sortable Identifiers
Basic Auth Generator
Generate HTTP Basic Authentication headers
RSA Key Pair Generator
Generate RSA public/private key pairs
IPv4 Address Converter
Convert IPv4 between decimal, hex, binary and octal
IPv4 Range Expander
Expand CIDR notation to full IP address ranges
IPv6 ULA Generator
Generate IPv6 Unique Local Addresses
Random Port Generator
Generate random available network port numbers
MAC Address Generator
Generate random MAC addresses
MAC Address Lookup
Look up vendor information from MAC address OUI
String Obfuscator
Obfuscate and mask sensitive strings
Phone Parser & Formatter
Parse and format phone numbers to international format
Email Normalizer
Normalize email addresses by removing dots and plus aliases
Password Strength Analyzer
Analyze password entropy and estimated crack time
SafeLink Decoder
Decode Microsoft SafeLinks and Proofpoint URLs
Integer Base Converter
Convert numbers between decimal, hex, octal and binary
JSON Minifier
Compact and minify JSON by removing whitespace
JSON Diff
Compare two JSON objects and highlight differences
JSON to XML
Convert JSON data to XML format
XML to JSON
Convert XML data to JSON format
JSON to TOML
Convert JSON data to TOML format
TOML to JSON
Convert TOML data to JSON format
TOML to YAML
Convert TOML data to YAML format
YAML to TOML
Convert YAML data to TOML format
JSON Tree Viewer
Interactive collapsible JSON tree visualization
YAML Viewer
Formatted YAML viewer with syntax highlighting
Benchmark Builder
Create and run JavaScript performance benchmarks
Device Information
View your browser, OS, screen and device details
WiFi QR Code Generator
Generate QR codes for WiFi network credentials
Markdown to HTML Live Editor
Convert Markdown to HTML with live interactive preview
Meta Tag Generator
Generate HTML meta tags for SEO and social sharing
MIME Types Checker
Look up MIME types by file extension and vice versa
JWT Token Inspector
Decode and inspect JSON Web Tokens with header, payload and claims
CSV to JSON Transformer
Convert CSV data to structured JSON with custom options
CSV to XML
Convert CSV data to XML format
JSON to XML File
Convert JSON to XML with file download