Mobile layout test
Mobile website overflow checker
A layout that looks right on a laptop can force users to scroll sideways on a phone. Check the deployed page at a real mobile viewport.
Run a free scan
Paste your public app URL. You will get a plain-English report with evidence and practical fixes.
Scan my appWhat VibeTester checks
- Loads pages at a 375px-wide mobile viewport
- Compares document width against the visible viewport
- Captures evidence for horizontal overflow
- Combines layout checks with button, error, and security checks
Why check before you share?
A fixed-width card, wide table, long unbroken string, or misplaced absolute element can make an otherwise good mobile page feel unfinished. Catch it before users bounce.
How it works
VibeTester checks for page-level horizontal overflow. It is a fast QA signal, not a replacement for manually reviewing every breakpoint and interaction on physical devices.