Three different decisions
Cropping removes pixels outside a chosen composition. Resizing changes the pixel grid of what remains. Compression changes how those pixels are encoded and how much storage they require. Treating these as interchangeable often produces a small file with the wrong framing or an oversized file with avoidable detail.
Start with composition because removed edges affect everything that follows. Resize next to the dimensions the destination can actually display. Compress last while inspecting the final-sized image, since artifacts are easier to judge at the intended output.
A practical publishing workflow
Keep the original untouched. Create a working copy, choose the required aspect ratio, protect important safe areas, resize for the display slot, then compare an appropriate format and quality. Export once and verify the result on the real page or upload form.
- Crop for meaning
- Resize for delivery dimensions
- Compress for acceptable transfer size
- Retain an editable source
When one step is enough
A correctly framed image may need only resizing. A correctly sized image may need only compression. Avoid processing for its own sake: every lossy export can remove detail, while unnecessary enlargement creates pixels without creating new information.
References and further reading
These primary or authoritative references support standards-dependent details. LipiCode’s explanations and examples are independently written for this workflow.