UD5 Toolkit
XSS Payload Sandbox - Online Test Escape Characters
Paste a potential XSS vector and see if it executes in a sandboxed iframe. For security researchers and education.
Tag: Sandbox - Code Playground
8+ toolsDate/Time Format Sandbox - Online Intl.DateTimeFormat Tester
Experiment with JavaScript Intl.DateTimeFormat options. Choose locale, dateStyle, timeStyle, hour12 and see live output. Copy the code snippet for your project.
Shared Storage API Demo - Online Cross‑Site Data
Write to shared storage and run a worklet to process data. Learn the privacy‑preserving alternative to third‑party cookies.
HTML Escape/Unescape Live Preview - Online Sandbox
Type raw HTML and see the escaped version, then see how it renders when unescaped. Understand encoding better.
JavaScript Live Tester - Online Run & Debug Snippets
Write JavaScript code and see the output or console.log results immediately. Safe iframe sandbox. For quick experiments.
Iframe Sandbox Configurator - Online Test Permissions
Build an iframe with different sandbox flags and see live which features are blocked. For secure embedding.
HTML Live Previewer - Online Code to Rendered View
Write or paste HTML, CSS, and JavaScript and instantly see the rendered output in a sandboxed iframe. A handy frontend prototyping tool.
JavaScript Type Checker - Online Typeof & Instanceof Sandbox
Paste any JavaScript expression and see its evaluated type and value. Understand JS coercion and type quirks. Educational.