Developer Tools &amp; Utilities

Crontab generator

Validate and generate crontab and get the human-readable description of the cron schedule.

HTTP-Statuscodes

List of all HTTP status codes, their name and their meaning.

SQL prettify and format

Format and prettify your SQL queries online (it supports various SQL dialects).

Benchmark builder

Easily compare execution time of tasks with this very simple online benchmark builder.

Git cheatsheet

Git is a decentralized version management software. With this cheatsheet, you will have quick access to the most common git commands.

Slugify String

Make a string safe for use in a URL, filename, or ID.

YAML prettify and format

Prettify your YAML string into a friendly, human-readable format.

ETA calculator

An ETA (Estimated Time of Arrival) calculator to determine the approximate end time of a task, for example, the end time and duration of a file download.

Roman numeral converter

Convert Roman numerals to numbers and convert numbers to Roman numerals.

Hmac generator

Computes a hash-based message authentication code (HMAC) using a secret key and your favorite hashing function.

BIP39 passphrase generator

Generate a BIP39 passphrase from an existing or random mnemonic, or get the mnemonic from the passphrase.

Base64 file converter

Convert a string, file, or image into its base64 representation.

List converter

This tool can process column-based data and apply various changes (transpose, add prefix and suffix, reverse list, sort list, lowercase values, truncate values) to each row.

Base64 string encoder/decoder

Simply encode and decode strings into their base64 representation.

TOML to YAML

Parse and convert TOML to YAML.

Math evaluator

A calculator for evaluating mathematical expressions. You can use functions like sqrt, cos, sin, abs, etc.

JSON to YAML converter

Simply convert JSON to YAML with this live online converter.

URL parser

Parse a URL string to get all the different parts (protocol, origin, params, port, username-password, ...)

IBAN validator and parser

Validate and parse IBAN numbers. Check if an IBAN is valid and get the country, BBAN, if it is a QR-IBAN and the IBAN friendly format.

User-agent parser

Detect and parse Browser, Engine, OS, CPU, and Device type/model from an user-agent string.

Case converter

Transform the case of a string and choose between different formats

Escape HTML entities

Escape or unescape HTML entities (replace characters like <,>, &, " and \\' with their HTML version)

JSON prettify and format

Prettify your JSON string into a friendly, human-readable format.

MAC address lookup

Find the vendor and manufacturer of a device by its MAC address.

MIME types

Convert MIME types to extensions and vice-versa.

TOML to JSON

Parse and convert TOML to JSON.

Lorem ipsum generator

Lorem ipsum is a placeholder text commonly used to demonstrate the visual form of a document or a typeface without relying on meaningful content

QR Code generator

Generate and download a QR code for a URL (or just plain text), and customize the background and foreground colors.

WiFi QR Code generator

Generate and download QR codes for quick connections to WiFi networks.

XML formatter

Prettify your XML string into a friendly, human-readable format.

Chmod-Rechner

Compute your chmod permissions and commands with this online chmod calculator.

RSA key pair generator

Generate a new random RSA private and public pem certificate key pair.

HTML-WYSIWYG-Editor

Online HTML editor with a rich WYSIWYG editor to obtain source code instantly.

YAML to TOML

Parse and convert YAML to TOML.

MAC address generator

Enter the quantity and prefix. MAC addresses will be generated in your chosen case (uppercase or lowercase)

JSON-Unterschied

Compare two JSON objects and get the differences between them.

JWT-Parser

Parse and decode your JSON Web Token (JWT) and display its content.

Date-time converter

Convert date and time into various formats.

Phone parser and formatter

Parse, validate and format phone numbers. Get information such as country code, carrier, and type.

IPv4 subnet calculator

Parse your IPv4 CIDR blocks and get all the info you need about your subnet.

Open graph meta generator

Generate open-graph and socials HTML meta tags for your website.

IPv6 ULA generator

Generate your own local, non-routable IP addresses for your network according to RFC4193.

Hash text

Hash a text string using the function you need : MD5, SHA1, SHA256, SHA224, SHA512, SHA384, SHA3 or RIPEMD160

JSON to TOML

Parse and convert JSON to TOML.

Device information

Get information about your current device (screen size, pixel-ratio, user agent, ...)

PDF signature checker

Verify the signatures of a PDF file. A signed PDF file contains one or more signatures that may be used to determine whether the contents of the file have been altered since the file was signed.

JSON minify

Minify and compress your JSON by removing unnecessary whitespace.

ULID generator

Generate random Universally Unique Lexicographically Sortable Identifier (ULID).

String obfuscator

Obfuscate a string (like a secret, an IBAN, or a token) to make it shareable and identifiable without revealing its content.

Integer base converter

Convert a number between different bases (decimal, hexadecimal, binary, octal, base64, ...)

YAML to JSON converter

Simply convert YAML to JSON with this live online converter.

UUIDs generator

A Universally Unique Identifier (UUID) is a 128-bit number used to identify information in computer systems. The number of possible UUIDs is 16^32, which is 2^128 or about 3.4x10^38 (which is a lot!).