YouTube requires channel art banners to be uploaded at a resolution of 2560 by 1440 pixels. Because different client devices crop banners differently (smartphones, tablets, desktop monitors, and connected TVs each display different viewports), placing text or logos outside the central 1546 by 423 pixel safe area can cause key branding elements to be cut off on mobile devices.

This canvas editor mounts a full 2560x1440 drawing canvas with toggleable safe-area overlay boundaries, allowing you to position logos, background artwork, and text elements where they remain visible across all screen sizes.

### A Real Example You are launching a channel and need a banner. You open the tool, set a dark slate background, and toggle the "Safe Area Guide" overlay. You place your channel name and weekly upload schedule ("New Videos Every Tuesday") inside the centered 1546x423 rectangle, and extend the background texture across the full 2560x1440 canvas. You export the image as "channel-banner.png" and upload it directly into YouTube Studio without cropping warnings.

### How Your Data Is Processed All banner composition, image loading, and export rendering execute 100% client-side using HTML5 Canvas APIs. Your uploaded graphics, channel logos, and exported banner files are processed entirely in local browser memory and never transmitted to external cloud servers.