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DevToolBox

Your all-in-one toolbox for development tasks.

Case Converter
Convert text case: UPPER, lower, Title, camel, Pascal, etc.
Code Diff Viewer
Compare two code blocks to see the differences.
String Similarity Checker
Compare two strings to find their similarity score.
Character Counter
Count characters, words, lines, and paragraphs in your text.
Text Size Calculator
Calculate text size in bytes, KB, MB with different encodings.
String Length Validator
Validate string length against min/max requirements.
Remove Duplicates
Remove duplicate lines or values from text.
Sort Lines
Sort text lines alphabetically, numerically, or naturally.
Find and Replace
Find and replace text using regular expressions.
Regex Tester
Test and debug regular expressions with highlighting.
CSS Selector Tester
Test CSS selectors against an HTML document.
Text Reverser
Reverse text, words, or lines with Unicode support.
Remove Empty Lines
Remove empty or whitespace-only lines from text.
Add Line Numbers
Add or remove line numbers with formatting options.
Word Wrap Formatter
Wrap text to a specified line length with various options.
Whitespace Normalizer
Trim whitespace, normalize spaces, and convert tabs.
Word Frequency Counter
Analyze text to find the most common words and visualize their frequency.
Text Editor
A full-featured editor with syntax highlighting and more.
Text to Speech
Convert text to speech with voice and speed controls.
Markdown Table Generator
Create Markdown tables with a grid interface.
README Generator
Generate a project README file using AI.
License Generator
Generate license files from popular templates.
Meta Tag Generator
Create SEO and social media meta tags for your website.
Robots.txt Generator
Create and customize a robots.txt file for search engine crawlers.
Sitemap Generator
Create a sitemap.xml file from a list of URLs.
Number Base Converter
Convert numbers between decimal, hexadecimal, binary, and octal.
Time and Date Tools
Convert timestamps, format dates, and more.
World Clock
View the current time in cities around the world.
Timezone Reference
Look up IANA timezone information and UTC offsets.
Duration Calculator
Calculate the duration between two dates and times.
Age Calculator
Calculate age from a date of birth.
Cron Job Helper
Validate, analyze, and generate cron expressions.
Web Playground
Experiment with HTML, CSS, and JS in a live environment.
Mock Data Generator
Create custom schemas to generate realistic fake data for your applications.
Fake API Response Generator
Generate mock API responses from a JSON schema.
Random Generator
Generate random strings, passwords, and numbers.
UUID Generator
Generate and validate universally unique identifiers.
ULID Generator
Generate and validate lexicographically sortable IDs.
RSA Key Generator
Generate RSA public/private key pairs.
Password Generator
Create strong, secure, and random passwords.
QR Code Tool
Generate and scan QR codes.
Barcode Generator
Generate various types of barcodes.
Image Metadata Extractor
Extract EXIF and other metadata from images.
Image to Base64
Convert an image to a Base64 data URI.
PDF Text Extractor
Extract text content from digital PDF files.
File Type Detector
Identify file types by their magic number signature.
Color Picker
Pick colors, convert formats, and create harmonies.
REST API Tester
Construct and send HTTP requests from your browser.
GraphQL Playground
Explore schemas and execute GraphQL queries.
GraphQL Formatter
Format GraphQL queries with syntax highlighting.
GraphQL Schema Validator
Validate GraphQL schema syntax and structure.
GraphQL Schema Diff
Compare two schemas and find breaking changes.
GraphQL Query Generator
Generate GraphQL queries from a natural language prompt.
GraphQL Code Generator
Generate mutations and TypeScript types from a schema.
WebSocket Tester
Test WebSocket connections in real-time.
cURL Command Converter
Convert cURL commands to code in various languages.
Postman to cURL
Convert Postman collections to cURL commands.
XPath Evaluator
Evaluate XPath expressions against an XML/HTML document.
JQ Query Tester
Filter and transform JSON data using jq queries.
SQL Validator
Validate SQL query syntax for different dialects.
SQL Code Reviewer
Get AI-driven reviews of your SQL code for best practices.
SQL Optimizer
Get AI-powered analysis to rewrite queries and improve indexing.
SQL Index Analyzer
Get AI-powered suggestions to optimize database indexes.
SQL Migration Generator
Compare two schemas and generate migration scripts.
SQL to NoSQL Converter
Convert SQL queries/schemas to NoSQL equivalents.
SQL Data Generator
Generate realistic test data from a SQL schema.
SQL Backup Script Generator
Generate backup and restore scripts for your database.
SQL Connection String Builder
Construct connection strings for various databases.
SQL Documentation Generator
Generate documentation and ERDs from a SQL schema.
SQL Schema Comparator
Compare two schemas and get AI-generated migration scripts.
Data Format Toolkit
Format or transform JSON, XML, YAML, CSV, HTML, CSS, JS and SQL.
JSON Formatter
Format, minify, and validate JSON data.
JSON Escaper / Unescaper
Escape or unescape a JSON string for embedding.
JSON Path Finder
Find paths by value or evaluate JSONPath expressions.
JSON Schema Generator
Generate a JSON Schema from a sample JSON object.
JSON to XML
Convert JSON data into XML format with formatting options.
JSON to CSV
Convert JSON arrays to CSV format with custom delimiters.
JSON Merge
Deep merge two JSON objects with array handling options.
JSON Compare
Visually compare two JSON objects to see the differences.
JSON Validator
Validate JSON data against a custom schema.
XML Formatter
Format and validate XML data.
YAML to JSON Converter
Convert data between YAML and JSON formats.
CSV Viewer
Parse and view CSV data in a table.
HTML Formatter
Format, minify, and preview HTML code.
CSS Formatter
A tool to format, beautify, or minify CSS code, making it more readable or compact for production environments.
JavaScript Formatter
Format and minify JavaScript code.
SQL Formatter
Format SQL queries for various dialects.
Markdown Editor
Write Markdown with a live preview.
TOML to JSON
Convert TOML data to JSON format.
Properties to JSON
Convert .properties file data to JSON.
INI to JSON
Convert INI file data to JSON.
Encode/Decode Arsenal
Base64, URL, HTML, Unicode, Hex, Binary, and HASH functions.
Base64 Encoder/Decoder
Encode and decode Base64 strings.
URL Encoder/Decoder
Encode and decode URL components.
HTML Entity Encoder/Decoder
Encode and decode HTML entities.
AES Encryption
Encrypt and decrypt text using the AES algorithm.
Unicode Escaper/Unescaper
Convert text to/from Unicode escape sequences.
Hex Encoder/Decoder
Convert text to/from its hexadecimal representation.
Binary Encoder/Decoder
Convert text to/from its binary representation.
ASCII Converter
Convert text to ASCII codes and back again.
Hash Generator
Generate MD5, SHA1, SHA256, SHA512 hashes.
JWT Decoder
Decode and verify JSON Web Tokens.
ROT Cipher
Apply a Caesar cipher with a custom rotation.
Morse Code Converter
Convert text to Morse code and listen to audio.
Punycode Converter
Convert domains to and from Punycode for IDNs.
Email Validator
Check if an email address is valid and well-formed.
Phone Number Validator
Validate and format international phone numbers.
Credit Card Validator
Validate credit card numbers for format and checksum.
Credit Card Test Data
Generate valid, test-only credit card numbers.
IBAN Validator
Validate International Bank Account Numbers.
ISBN Validator
Validate and convert ISBN-10 and ISBN-13 numbers.
ISSN Validator
Validate International Standard Serial Numbers.
VIN Validator
Validate and decode Vehicle Identification Numbers.
IP Validator
Validate and classify IPv4 and IPv6 addresses.
Subnet Calculator
Calculate network details from an IP and subnet mask.
MAC Address Validator
Validate MAC addresses and lookup vendors.
SSN Validator
Validate Social Security Number formats.
HTTP Status Code Reference
Look up HTTP status codes and their meanings.
MIME Type Reference
Look up MIME types and their corresponding file extensions.
User-Agent Generator
Generate and parse User-Agent strings.
Doc Gen Assistant
Generate READMEs, migration guides, and test cases with AI.
Utility Knife
File size conversion, checksum verification, IP validation.
IDE Script Generator
Generate test scripts and deployment files with AI.