Developer Tools.
One Platform.
No login. No limits. Formatters, converters, encoders, network probes, generators and more — all running in your browser.
Code Formatting
7CSS / SCSS / LESS Formatter
Paste messy CSS, SCSS, or LESS — outputs cleanly indented, consistently formatted stylesheet code.
HTML Formatter
Beautifies raw or minified HTML into readable, properly indented markup.
JavaScript / TypeScript Formatter
Format and auto-indent JavaScript or TypeScript source code with configurable tab width and semicolons.
JSON Formatter & Validator
Takes raw or minified JSON, validates its syntax, and outputs it with clean indentation. Highlights errors on invalid JSON.
SQL Formatter
Formats SQL queries — adds consistent indentation, uppercases keywords, aligns columns for readability.
XML Formatter
Prettifies raw or minified XML documents with proper indentation and line breaks.
Code Minifier
Removes whitespace, comments, and unnecessary characters from HTML, CSS, JS, TS, JSON, SVG, and XML to reduce file size.
Conversions
11Color Converter
Converts colors between HEX, RGB, HSL, HWB, LAB, LCH, CMYK, and XYZ color spaces with live preview.
Cron Expression Editor
Build cron job schedules visually or by typing — shows human-readable description and next 5 run times.
Data Format Converter
Converts data between JSON, YAML, TOML, XML, and CSV in any direction with a single click.
Date & Time Converter
Convert between ISO dates, human-readable formats, and Unix timestamps (seconds and milliseconds).
Georeferencing Converter
Convert between GIS data formats — Shapefile, KML, KMZ, GeoJSON, and WKT.
IPv4 to IPv6 Converter
Maps an IPv4 address to its IPv4-mapped IPv6 equivalent and shows both notations.
JSON to Model Generator
Paste JSON and get generated TypeScript interfaces, Go structs, Python dataclasses, or Java classes.
Numeric Base Converter
Convert any number between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).
Crypto & Encoding
13Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from text input or file upload.
JWT Decoder & Verifier
Decode a JWT token and display its header, payload, and signature. Optionally verify with a secret.
Asymmetric Encryption (RSA)
Generate RSA key pairs and encrypt/decrypt messages using public-private key cryptography.
Symmetric Encryption (AES)
Encrypt and decrypt text using AES-256 with a passphrase — all in-browser, nothing sent to server.
SSL Certificate Analyzer
Enter a domain — fetches its SSL/TLS certificate and displays issuer, expiry, SANs, trust chain details.
Secret Sharing
Encrypt a secret message with a password and generate a shareable link that expires after one view or set time.
WordPress Password Hash
Generate WordPress-compatible password hashes and verify a plaintext password against an existing hash.
Base64 String Encoder/Decoder
Encode any text string to Base64 or decode a Base64 string back to plain text.
Network Tools
12DNS Lookup
Query DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA) for any domain and display results.
Whois Lookup
Query the public WHOIS registry for a domain or IP — shows registrar, creation date, name servers.
Ping
Send ICMP echo requests to a host or IP and return response time and packet loss.
Traceroute
Shows the network path (each hop/router) from the server to a destination IP or hostname.
Subnet / Network Calculator
Enter an IP and CIDR — calculates network address, broadcast, usable range, subnet mask.
IP Geolocation
Enter any IP and get its estimated country, city, ISP, timezone, and coordinates.
My Public IP
Shows the visitor's current public IP address along with basic connection details.
HTTP Header Validator
Fetch the HTTP response headers of any URL and display them — useful for debugging cache, CORS, security headers.
Text Tools
6Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, PascalCase.
Text Diff / Comparator
Paste two text blocks and see a side-by-side or inline diff highlighting additions, deletions, and changes.
Regex Tester
Write a regex pattern and test it against sample text — shows all matches highlighted with group captures.
Text Cleaner
Remove extra spaces, trim lines, strip special characters, normalize line endings, and clean copy-pasted text.
Lorem Ipsum Generator
Generate placeholder text in multiple languages (Latin, English, Spanish, German) with configurable paragraph count.
ASCII Art Generator
Convert text to ASCII art using FIGlet fonts. Choose from multiple fonts and copy the output.
QR & Barcodes
8QR Code Generator
Generate a QR code from any text, URL, Wi-Fi config, or contact info. Download as PNG or SVG.
QR & Barcode Reader
Upload an image containing a QR code or barcode and decode its contents.
Barcode Generator
Generate EAN-13, EAN-8, UPC-A, Code128, Code39, and other standard barcodes as SVG.
ASCII Table
Full reference table of all 128 ASCII characters with decimal, hex, octal, binary, and HTML entity values.
HTTP Status Codes Reference
Searchable list of all HTTP status codes (1xx–5xx) with name, meaning, and common use cases.
MIME Types Reference
Search MIME content types by extension or type — shows all standard and common MIME types.
HTML Entities Reference
Searchable table of HTML special characters and symbols with their entity names and codes.
Georeferencing Converter
Convert between GIS spatial data formats — Shapefile, KML, KMZ, GeoJSON, and WKT.
Generators
12UUID / ULID / NanoID Generator
Generate UUIDs (v1, v4, v5), ULIDs, and NanoIDs — single or bulk. Copy all at once.
Password Generator
Generate strong random passwords with custom length, character sets (symbols, numbers, uppercase), and an entropy meter showing crack time.
Fake / Mock Data Generator
Generate realistic fake data for testing — names, emails, addresses, phone numbers, company names, credit card numbers, and more.
Random Color Palette Generator
Generate harmonious color palettes (complementary, analogous, triadic). Export as CSS variables, Tailwind config, or JSON.
SSH Key Pair Generator
Generate RSA (2048/4096 bit) or Ed25519 SSH key pairs entirely in the browser. Download both keys.
OTP / TOTP Generator & Tester
Generate TOTP one-time codes from a secret key. Useful for testing 2FA implementations without an authenticator app.
Secure Token / API Key Generator
Generate cryptographically secure random tokens of any length in hex, base64, or alphanumeric format for use as API keys or secrets.
Mock JSON Generator
Define a JSON schema template and generate multiple mock records. Great for seeding test databases.
Image Tools
8Image Format Converter
Convert images between PNG, JPG, WebP, AVIF, BMP, and GIF — entirely in-browser using Canvas.
Image Compressor
Compress images with a quality slider — shows before/after file size and a preview of both.
Image Resizer
Resize images to exact pixel dimensions or a percentage — with option to lock aspect ratio.
Favicon Generator
Upload any image and generate all required favicon sizes (16x16 to 512x512) plus the HTML `<link>` snippet.
SVG Optimizer
Paste or upload an SVG and remove unnecessary metadata, comments, and redundant attributes to reduce file size.
Image to Text (OCR)
Upload a photo or screenshot and extract all readable text from it using in-browser OCR — no server needed.
EXIF Data Viewer
Upload a photo and read its embedded EXIF metadata — camera model, shutter speed, GPS coordinates, timestamp.
Color Picker from Image
Upload an image, click any pixel, and get its exact HEX, RGB, and HSL color value. Shows a palette of dominant colors.
Markdown & Docs
6Markdown Editor & Preview
Side-by-side Markdown editor with live rendered preview. Export to HTML or copy the rendered output.
Markdown to HTML Converter
Paste Markdown and get clean, semantic HTML output. Optionally include or strip styling.
HTML to Markdown Converter
Paste HTML and convert it to clean Markdown — useful for CMS migrations and content re-use.
Word Counter & Readability Analyzer
Count words, characters, sentences, paragraphs, and calculate Flesch reading ease score and estimated read time.
CSV Editor & Viewer
Upload or paste CSV — view it as a spreadsheet-like table. Sort columns, filter rows, and export back to CSV or JSON.
JSONPath / JMESPath Tester
Paste JSON and test JSONPath or JMESPath expressions — highlights matching values and shows the result.
API & Web Testing
8HTTP Request Builder (like mini Postman)
Make real HTTP requests (GET, POST, PUT, DELETE, PATCH) with custom headers and body. Shows response status, headers, and body.
CORS Tester
Check if a URL returns correct CORS headers for a given origin — shows Access-Control headers and whether the request would succeed.
Security Headers Checker
Fetch a URL's response headers and grade its security posture — checks for CSP, HSTS, X-Frame-Options, Referrer-Policy, Permissions-Policy.
WebSocket Tester
Enter any WebSocket URL, connect, send messages, and view the real-time response stream. Great for debugging WS APIs.
Open Graph / Social Preview
Enter a URL and preview how it appears when shared on Twitter/X, LinkedIn, Facebook, and WhatsApp — shows OG image, title, description.
curl to Code Converter
Paste a curl command and convert it to equivalent code in JavaScript fetch, Python requests, Go net/http, PHP, or Ruby.
Redirect Chain Checker
Enter a URL and follow all redirects, showing the full chain of hops, status codes, and final destination.
Website Performance Checker
Run a basic speed and performance analysis on any URL — response time, resource count, page size, and Google PageSpeed score.
DevOps Helpers
10Docker Compose Builder
Visually pick and configure common Docker services (Postgres, Redis, Nginx, MongoDB) and generate a ready-to-use docker-compose.yml.
.gitignore Generator
Select your tech stack (Node, Python, Go, Unity, macOS, etc.) and generate a comprehensive .gitignore file.
.env File Parser & Validator
Paste a .env file to validate its syntax, detect duplicate keys, and optionally convert it to JSON or YAML.
Semver Version Checker
Test semantic versioning range expressions — see which versions match a given range (e.g. `^1.2.3`, `>=2.0.0 <3`).
JWT Builder & Signer
Build a custom JWT payload, choose algorithm (HS256, RS256), enter a secret, and get a signed JWT token.
Nginx Config Generator
Generate Nginx server block configs for common scenarios — reverse proxy, static site, SSL redirect, rate limiting.
Kubernetes YAML Validator
Paste a Kubernetes manifest (Deployment, Service, ConfigMap, etc.) and validate it against the official API spec.
GitHub Actions / CI Pipeline Generator
Select your language and workflow type — generates ready-to-use YAML for GitHub Actions, GitLab CI, or CircleCI.
Database & Data
6JSON to SQL Converter
Paste a JSON array and generate SQL INSERT statements for any target database (PostgreSQL, MySQL, SQLite).
SQL to JSON Converter
Paste SQL query results or a CREATE TABLE statement and convert it to a clean JSON array or schema.
Database Schema Visualizer (ER Diagram)
Paste SQL CREATE TABLE statements and auto-generate an Entity Relationship diagram showing tables, columns, and relationships.
JSON Schema Validator
Validate a JSON document against a JSON Schema definition — shows all validation errors with paths.
Excel / CSV to JSON Converter
Upload an Excel (.xlsx) or CSV file and convert all sheets/columns to clean JSON output.
Timestamp Batch Converter
Paste a list of Unix timestamps (one per line) and convert them all at once to human-readable date/time format.
Security & Privacy
6Password Strength Checker
Analyze a password's strength — shows entropy bits, estimated crack time, and specific improvement suggestions.
HaveIBeenPwned Checker
Check if an email address or password appears in known data breaches using the HIBP API.
CSP Header Builder
Visually build a Content-Security-Policy header string — toggle directives, add allowed sources, copy the final header.
HMAC Generator
Generate HMAC signatures using SHA-256 or SHA-512 with a secret key — used to sign API requests and webhooks.
BIP39 Mnemonic Generator
Generate BIP39 mnemonic seed phrases (12 or 24 words) for cryptocurrency wallet creation — entirely offline.
Certificate / PEM Decoder
Paste a PEM or DER certificate and view all decoded fields — subject, issuer, validity, SANs, public key info.
Miscellaneous
11Timezone Converter
Enter a time in one timezone and see the equivalent across multiple zones simultaneously — with a world clock view.
Unit Converter
Convert between length, weight, temperature, speed, area, volume, pressure, and digital storage units.
HTTP Cookie Parser
Paste a raw Set-Cookie header and get a clean breakdown of name, value, domain, path, expiry, and flags (HttpOnly, Secure, SameSite).
User-Agent Parser
Paste any User-Agent string and get a decoded breakdown of browser, OS, device type, and version numbers.
Email Validator
Validate email format, check if the domain has valid MX records, and flag known disposable/throwaway email providers.
File Diff Viewer
Upload two text files and view a side-by-side or unified diff — more powerful than the simple text comparator.
Number to Words Converter
Convert any number to its written-out word form in multiple languages (English, Hindi, etc.).
CSS Box Shadow Builder
Visual slider-based builder for CSS box-shadow — multiple layers, live preview, and one-click CSS copy.