Drop PNGs above, download WebP files. Typically 25–70% smaller at visually identical quality, transparency intact. For a faster website, this is usually the cheapest win available.
Why site owners do it: every current browser renders WebP natively, so the fallback PNGs that used to be necessary no longer are. Serving WebP cuts image weight across a page, which feeds straight into load times and Core Web Vitals.
What survives: transparency (full alpha; logos and cut-outs keep their backgrounds, unlike JPG) and dimensions. Only the encoding shrinks.
Quality setting: 82% is the web-delivery sweet spot. Two adjustments worth knowing:
- Fine text and UI screenshots show fuzz soonest. Raise the quality if text softens.
- Lossless needed? Set 100. The file stays smaller than the PNG anyway.
Judge on numbers: every file reports its before and after bytes as it finishes. Convert a few representative images and read the results. Content type changes the savings a lot.
Keep the PNG originals as masters; conversion leaves the source alone. Every current browser handles WebP, so a converted asset is safe to put on a site; it is older desktop software that still refuses it.
Drop the set together and a ZIP comes back at the end.