Mailto Link Generator

Script Tag Generator Script tag snippet for external JS files. Anchor Link Generator Anchor link HTML snippet for internal navigation. Iframe Generator Iframe embed snippet with common attributes. Agent Tool Call Tester Check an agent's proposed tool call against a JSON Schema and locate invalid arguments before execution.

HTML Entities Explained with Practical Examples Understand when characters need HTML entities and when to decode them. Why Pasted JSON Breaks After Copying from a Website Spot smart quotes, hidden characters and copied formatting problems.