Scan tab · Multi-viewport · Free to use
Multi-viewport scan
Scan a page at selected browser widths and compare which findings appear at each width. The browser window is restored afterward.
Maintained by A11y Scan · Updated
Use it in the extension
Open the page to compare and choose the CSS widths in the shared configuration.
Enable multi-viewport for a page scan, with Crawl and Scan Movie off.
Run the scan. The extension resizes the browser window, measures the actual page width, and scans each configured width.
Select each width's result, compare its findings and failed-width state, and export the multi-viewport report.
What you get
Results identify the tested widths; the original window and focus are restored after the run or cancellation.