DevToolBox Blog

Easily add or remove line numbers from your text with flexible formatting options.

Encrypt and decrypt text using the AES algorithm.

Calculate age in years, months, and days, see a countdown to the next birthday, and view age in different units.

Generate GraphQL mutations or TypeScript types from a schema and a simple prompt.

Generate GraphQL queries by describing what you need in plain English.

Compare two schemas and identify breaking and non-breaking changes.

Generate a professional README.md file for your project using AI.

Generate backup and restore scripts for your database with AI.

Get an AI-powered code review for your SQL queries to improve quality and performance.

Generate realistic test data from your SQL schema using AI.

Generate Markdown documentation and an ERD from your SQL schema.

Get AI-powered suggestions to optimize database indexes.

Compare two schemas and get AI-generated migration and rollback scripts.

Get AI-powered analysis to rewrite queries and improve indexing.

Compare two schemas and get AI-generated migration and rollback scripts.

Get AI-powered conversions from SQL queries to NoSQL equivalents, including schema and performance advice.

Convert text to ASCII codes and back again.

Create and customize various types of barcodes like CODE128, EAN, UPC, and more.

Encode and decode Base64 strings.

Convert text to/from its binary representation.

A versatile tool for converting text into various case formats instantly.

Analyze your text with real-time statistics for characters, words, and lines.

Compare two blocks of code or text to see the precise character-level differences.

Select a color and get its values in HEX, RGB, HSL, see harmonies, and check contrast.

Generate valid, test-only credit card numbers.

Validate credit card numbers for format and checksum.

Validate, analyze, and generate cron expressions. See human-readable descriptions and upcoming run times for any cron schedule.

A tool to format, beautify, or minify CSS code, making it more readable or compact for production environments.

Test CSS selectors against an HTML document and see the results live.

Paste your CSV data to view it in a structured table format.

Convert cURL commands into code snippets for various languages using AI.

Generate READMEs, migration guides, and test cases with AI.

Calculate the duration between two dates and times, with options to exclude weekends.

Check if an email address is valid and well-formed.

Base64, URL, HTML, Unicode, Hex, Binary, and HASH functions.

Generate mock API responses by providing a JSON schema.

Identify file types by their magic number signatures.

A powerful tool to find and replace text with support for regular expressions.

Format your GraphQL queries, mutations, and fragments with ease.

Execute queries and explore schemas from any GraphQL endpoint.

Validate your GraphQL schema using the Schema Definition Language (SDL).

Generate MD5, SHA1, SHA256, SHA512 hashes.

Convert text to/from its hexadecimal representation.

Encode and decode HTML entities.

Format, minify, and preview your HTML code.

Look up HTTP status codes and their meanings.

Validate International Bank Account Numbers.

Generate test scripts and deployment files with AI.

Extract EXIF, IPTC, and other metadata from your images.

Convert images into Base64 encoded strings for embedding in your code.

Convert data from INI file format to JSON.

Validate and classify IPv4 and IPv6 addresses.

Validate and convert ISBN-10 and ISBN-13 numbers.

Validate International Standard Serial Numbers.

Format and minify JavaScript code.

Filter and transform JSON data using jq queries.

Compare two JSON objects to see the differences highlighted.

Escape or unescape a JSON string for embedding.

Format, minify, and validate your JSON data with ease.

Combine two JSON objects with fine-grained control over the merging process.

Find paths by value, or evaluate a JSONPath expression against your data.

Instantly generate a JSON Schema from a sample JSON object.

Convert JSON arrays into CSV data, with support for nested objects.

Convert JSON objects into well-formed XML data with formatting options.

Validate your JSON data against a provided JSON schema.

Decode and verify JSON Web Tokens (JWTs) using various algorithms.

Choose a license and generate the full text for your project.

Validate MAC addresses and lookup vendors.

Write Markdown with a live preview.

Create Markdown tables with a simple grid interface and alignment options.

Create SEO-friendly and social media-ready meta tags for your website.

Look up MIME types and their corresponding file extensions.

Create custom schemas to generate realistic fake data for your applications.

Convert text to Morse code and listen to the audio playback.

Convert numbers between decimal, hexadecimal, binary, and octal.

Create strong, secure, and random passwords tailored to your needs.

Extract plain text content from digital PDF files directly in your browser.

Validate and format international phone numbers.

Upload a Postman collection (and optionally an environment) to generate cURL commands.

Convert data from Java .properties file format to JSON.

Convert internationalized domain names (IDNs) to and from Punycode.

Create QR codes from text, or scan them from an image file.

Generate random strings, passwords, and numbers with customizable options.

Test and debug your regular expressions in real-time.

Remove duplicate lines or comma-separated values from your text.

Clean up your text by removing empty or whitespace-only lines.

Construct and send HTTP requests directly from your browser.

Create and customize a `robots.txt` file to manage search engine crawlers.

Apply a Caesar cipher (like ROT13) to your text with a custom rotation value.

Generate RSA public and private key pairs for encryption and digital signatures.

Create a `sitemap.xml` file from a list of your website's URLs.

Sort text lines alphabetically, numerically, or using natural order.

Construct correctly formatted database connection strings for various platforms.

Format your SQL queries for various dialects.

Check your SQL queries for syntax errors against different dialects.

Validate Social Security Number formats.

Validate if strings meet minimum and maximum length requirements.

Analyze the similarity between two strings using different algorithms.

Calculate network details from an IP and subnet mask.

A full-featured editor with syntax highlighting for various languages.

Reverse text, words, or lines with Unicode support.

Calculate text size in bytes, KB, and MB based on different character encodings.

Convert text into spoken audio with various voice options and controls.

Convert timestamps, view time across different timezones, and format dates.

A quick reference guide for common IANA timezones, UTC offsets, and DST information.

Convert data from TOML format to JSON.

Generate and validate universally unique, lexicographically sortable identifiers.

Convert text to/from Unicode escape sequences.

Encode and decode URL components.

Generate and parse User-Agent strings.

File size conversion, checksum verification, IP validation.

Generate and validate universally unique identifiers (UUIDs).

Validate and decode Vehicle Identification Numbers.

Experiment with HTML, CSS, and JavaScript in a live environment.

Test WebSocket connections in real-time.

Clean up your text by trimming spaces, normalizing whitespace, and converting tabs.

Analyze text to find the most common words and visualize their frequency.

Format your text by wrapping it to a specified line length.

View the current time in cities around the world.

Format, view, and validate your XML data with ease.

Evaluate XPath expressions against an XML or HTML document.

Convert data between YAML and JSON formats seamlessly.