Fresha publishes unusually specific numbers and most people ignore them. Service portfolio and marketplace images should be 2727 x 1545 pixels, with a minimum of 1818 x 1030 and sharpest results at 3636 x 2060 — all landscape, roughly 16:9. The venue guidance adds a floor in megabytes: avoid low-quality images below 2800 x 1050 px or under 1MB because they appear blurry on larger screens. So Fresha is the rare platform where the failure mode is a photo that is too small, not too large, and where a compressed file can be rejected on quality rather than weight. Two other limits shape the workflow: manual portfolio uploads are capped at 10 images per batch, so a full portfolio is ten separate uploads, and product store images have their own spec entirely — 500 x 500 to 2000 x 2000, square 1:1, JPG preferred, 1 to 5MB each with a 24MB maximum upload. What actually helps is resizing to the recommended frame rather than dumping a portrait camera file and letting Fresha crop it, compressing to a quality that holds hair and nail texture at that size, and batching so ten uploads become one prepared set. Skwish resizes to a custom width and height, converts between JPG, PNG and WebP, shows before and after per file, and gives you one ZIP for the batch — all in the browser.