Developer Starter Pack

Essential utilities for software engineers, from formatting JSON to subnetting IPs.

Included in this bundle

6 Tools
Step 1

JSON Formatter & Validator

Format, validate, and minify your JSON data instantly. Our free online JSON Formatter makes your code readable, helps debug syntax errors, and optimizes data for production.

Open Tool
Step 2

HTML Formatter & Beautifier

Format, beautify, and minify your HTML code instantly. Clean up messy HTML tags, detect unclosed elements, and live-preview your code with our fast, browser-based HTML formatter.

Open Tool
Step 3

Diff Checker & Text Compare

Compare two text, JSON, or code files instantly to find differences. A fast, local, browser-based diff tool for developers.

Open Tool
Step 4

Subnet Calculator

Calculate IPv4 subnets, network addresses, broadcast addresses, and usable host ranges based on IP address and CIDR block.

Open Tool
Step 5

Password Generator

Generate highly secure, random passwords online to protect your accounts. Customize length, numbers, symbols, and casing.

Open Tool
Step 6

Conversion Calculator

Quickly convert between metric and imperial units. Use our free conversion calculator for length, weight, temperature, volume, and more.

Open Tool
Developer Tools Starter Pack | Nexus Calculator | Nexus