What is a JSON Formatter?

A JSON Formatter (or 'prettifier') takes compact, hard-to-read JSON data and adds indentation and line breaks to make it easily readable for developers. This tool also validates the JSON to ensure it has no syntax errors.

What is a Unix Timestamp?

A Unix Timestamp is the number of seconds that have elapsed since January 1, 1970. It's a universal standard used in many programming languages and databases. This converter tool allows you to easily switch between a timestamp and a human-readable date.

Why would I need to encode text to Base64?

Base64 is an encoding scheme that converts binary data (like images or special characters) into a text-only format that can be safely transmitted over systems that are designed to handle plain text. It's commonly used in web development for data URLs and API requests.

All-in-one Developer Tools

Free, Private, and Instant Developer Tools

Format, convert, and validate your data with these essential client-side utilities. All operations happen in your browser, so your data is never sent to a server.

JSON Formatter & Validator

What is this? ▼

Paste your JSON data into the text area. The "Format" button will add indentation and line breaks to make it easy to read. The "Validate" button will check for syntax errors, such as missing commas or brackets, and tell you if your JSON is valid or not.

Unix Timestamp Converter

Unix Timestamp (seconds)

Human-Readable Date

What is this? ▼

Easily convert between a Unix timestamp (the number of seconds since Jan 1, 1970) and a standard, human-readable date and time. This is a common task for developers working with APIs, databases, and logs. You can also get the current timestamp with one click.

Base64 Encoder & Decoder

Plain Text

Base64 Encoded

What is this? ▼

Convert plain text into a Base64 string, and vice-versa. Base64 is a method for encoding binary data into a text-only format so it can be safely transmitted over systems that are designed to only handle text. It's widely used on the web for data URLs, APIs, and basic authentication.

URL Encoder & Decoder

Decoded URL / Text

Encoded URL / Text

What is this? ▼

Encode special characters in a URL or text string to make it safe for transmission, or decode it back to a human-readable format. This tool uses `encodeURIComponent` for maximum safety, ensuring all reserved characters are correctly processed.

Hash Generator

Input Text

MD5:

SHA-1:

SHA-256:

What is this? ▼

Generate popular cryptographic hash values for any text input. Hashes are used to verify data integrity and for security purposes. This tool uses your browser's built-in Web Crypto API for SHA hashes and a standard library for MD5, ensuring all calculations are done securely on your device.

CSS Unit Converter

Base Font Size (px)

Pixels (px)

REM

What is this? ▼

A quick and easy converter for front-end developers. Switch between `px` and `rem` CSS units based on your project's root font size. The conversion happens automatically as you type in either field, making responsive design calculations a breeze.