Responsive Checker
Preview how a site behaves across desktop and mobile form factors.
Client Sandbox Instant⚡ Auto-Bake
Type a site address to load preview frames. (Note: Some domains restrict iframe embedding via X-Frame-Options policies).
Smartphone (Mobile Preview - 375px × 640px)
Tablet Frame (768px × 600px)
About Responsive Checker
Audit responsive design sheets. Load frame containers at specific resolution breaks to test grid layouts.
How to Use the Tool
- Paste your live target page URL.
- Select form factor presets (Desktop, Mobile, Tablet).
- Observe media query adaptations inside sandbox frames.
Visual Walkthrough
Interactive Usage Guide
Step-by-step interactive mockup tutorial
1Step 1 of 3
toolchi.online/sandbox
DROP FILE HERE
FAQs
Does it support custom widths?
Yes, viewport dimensions can be adjusted dynamically in the review workspace.