Resize channel artwork without assuming that every part of a banner remains visible on every device.
Use the Stream Asset Sizer alongside this illustrative example.
A practical example
Place a title near the centre of the source artwork and leave decorative details near the edges. After resizing, preview the upload in the destination’s desktop and phone layouts. A full-size image can meet pixel dimensions while still losing its title to a narrower crop.
Check the result
Check the platform’s current dimensions, safe area and file-size limit. Retain the source so you can adjust composition instead of repeatedly enlarging an already resized export.
Try a comparison
Compare a crop that preserves the centre title with one that fills every edge. Decide which information must survive before choosing a composition. Meeting a pixel count is useful only if the resulting artwork still communicates on the destination’s displayed crop.
What this does not establish
Preset dimensions can change and resizing is not an approval check. Confirm the requirements for the exact asset type at the time of publishing.