#tools

Convert between bytes, temperatures, lengths, and more without opening a calculator app — purpose-built tools for developer workflows.

Stop writing throwaway scripts to convert between data formats. Here's a guide to CSV, JSON, YAML, and XML — plus instant converters for each.

Learn how QR codes work under the hood, what data they can hold, and how to generate them instantly for URLs, WiFi, and more.

Edit, annotate, merge, split PDFs entirely in your browser — nothing uploaded to any server.

Visual CSS generators for gradients, shadows, animations, and clip-paths — all free.

Validate docker-compose.yml files instantly — catch typos and version issues before deploying.

A practical comparison of CSS preprocessors — features, performance, and when to use each.

Describe endpoints get API documentation

Essential security tools for generating keys, HMAC signatures, CSP headers, and more.

Enter stack get optimized .gitignore

Describe project get full README.md

Paste diff get conventional commit message

Describe element get production CSS

Paste cron get human-readable schedule

Convert code between languages

Describe query in English get SQL

AI identifies and fixes broken JSON

Paste any regex get plain-English explanation

Edit, annotate, merge, split, compress PDFs in-browser

Build cURL commands visually