Photoshop is the right place for pixel-perfect creative. When the task is standardized dimensions across a whole export, a browser batch with presets and ZIP workflows is often faster than repeating Actions.
Stay in Photoshop when you need masks, compositing, brand templates, or non-uniform crops per SKU. Finish creative there, then export a folder for the next step.
Use browser bulk resize when every file should land on the same marketplace frame (or a small set of presets) and you want one pass with Bulk Resize and Bulk Compress —see batch vs one-file compressors for the throughput angle.
Channel maps and presets: Platform hub.