Breakpoint sweep
Find every width where your layout breaks
Testing five device sizes misses the bugs in between. The breakpoint sweep widens your page from 320 to 1920px in 10px steps and reports each range where content spills sideways, so you see “breaks between 784 and 812px”, not just “fine on iPad”.
- Horizontal scrolling that only appears between two breakpoints
- The element pushing the page wider, with a screenshot at the worst width
- Fixed-width images, tables and embeds wider than the screen

