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Convert PNG to JPG online — smaller files

Shrink screenshots and renders for email and web use. Runs locally, no upload.

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ツールとラベルは日本語です。以下の参考情報は英語のままです。

PNG → JPG converter

Runs entirely in this browser tab. Your file is never uploaded and nothing is stored.

PNGファイルをここにドロップ、またはクリックして選択

or — no sign-up required

このファイルの修正や作図に、CAD/BIM技術者が必要ですか？

Stuck on CAD or 3D file cleanup? Post a drafting role specifying the source format, target format and checks you need. Agree the scope before work starts.

製図者に依頼このプロジェクトを無料で掲載

手順

  1. 1Drop the PNG above.
  2. 2Transparency is flattened onto white.
  3. 3Download the JPEG.

注意点

  • Lossy: keep the PNG as the master copy.
  • Typical saving is 60–80% on renders and photos.
PNG — Portable Network Graphics

Lossless raster image with transparency.

JPG — JPEG image

Lossy raster image — smallest file for photos and renders.

よくある質問

What happens to transparent areas?

They become white, because JPEG has no alpha channel.

What quality is used?

92%, a good balance between size and visible artefacts.

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