50-asset-resize

Start from the master file, list every target size, then assign a strategy per size: Scale & Crop for similar ratios, Re-compose for moderately different ratios, and Rebuild for very different ones like 1:1 to 9:16. Produce a resize map with priority and status per size.

Feed posts use 1080x1080px (1:1) or 1080x1350px (4:5), stories and reels use 1080x1920px (9:16), Facebook cover is 820x312px, LinkedIn posts are 1200x627px, and YouTube thumbnails are 1280x720px.

Stories and reels need a 250px safe zone at top and bottom so UI elements do not cover text or CTAs. TikTok requires 150px at the top and 300px at the bottom.

Rebuild when the target ratio differs drastically from the master, such as converting a 1:1 feed post to a 9:16 story or a 3:1 email header. Cropping would lose key elements, so recreate the layout on a new canvas keeping the concept, colors, and copy.

Distortion happens when the image is stretched instead of scaled proportionally. Always scale while preserving the aspect ratio, resize from the original master file rather than an exported copy, and crop background areas instead of forcing the layout to fit.

Do not use it to create a new design from a concept, which belongs in an image brief skill, or for urgent mid-campaign visual fixes, which fit a quick visual brief. It only adapts an existing approved master design into additional sizes.