Free Developer Tools

Format JSON, count text, and generate test passwords with lightweight browser tools.

Small developer tasks, handled quickly

Use these tools when you need to inspect an API response, count characters for metadata, or generate a strong temporary password for a test account.

Format JSON Count text Generate password Security tools

Affiliate disclosure: this site may earn a commission from Coupang Partners links.

Recommended Developer Tools

API

JSON Formatter

Format and validate minified JSON, API responses, webhook payloads, and configuration files.

Open
Docs and SEO

Character Counter

Check character and word counts for meta descriptions, titles, release notes, and app copy.

Open
Testing

Password Generator

Create strong random passwords for test accounts, demo accounts, and internal tools.

Open

Why browser tools help

Small developer tasks often become slower when they require a full app or command-line context switch. Browser tools keep quick formatting, counting, and test-data tasks close at hand.