Blueground Banner Preview Tool

I built this local tool to shorten the testing loop for HTML5 banner creatives.

It runs on React, TypeScript, and Vite and supports four common banner formats:

• 300 × 250
• 336 × 280
• 728 × 90
• 160 × 600

The useful bits are intentionally small: press R to replay an animation, use the arrow keys to move between sizes, and check the diagnostics panel for the current creative URL and load time. Banner files stay local under public/banners, so the tool is quick to adapt to a new campaign.

This is a development utility rather than a hosted product, but it captures the kind of thing I like building: a focused tool that removes repetitive work from a real design-and-production workflow.