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Check backgrounds when compressing transparent images

A transparent logo exported to JPEG receives a white background. Compare it on the intended background.

URLTO editorial · Updated

Image compression · series07 / 10

Input and processing example

Compare it yourself · Illustrative example

원본 / Source: 투명 PNG / transparent PNG
JPEG: 흰색 배경 / white background
PNG·WebP 후보 / alternatives: 투명도 결과 확인 / inspect transparency

Steps to verify

  • Choose the intended background.
  • Compare output formats.
  • Inspect edges and background.

How to interpret the result

Size reduction and retained transparency are separate conditions. Choose another output if the background no longer suits the destination.

Deciding what to do next

White fill can be unnoticed on a light screen. Check logo edges and appearance on the final background.

Feature scope

Export a new file at the same dimensions in the browser. Compare JPEG/WebP quality and format; PNG quality behaves differently and the output is not always smaller.

Frequently asked questions

Does JPEG retain transparency?

This export flow fills transparent areas with white.

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