MiniPNG

WebP to JPG Converter

Convert your WebP images to JPG online — free, fast, and widely compatible.

100% 無料 安全・プライベート
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Convert WebP to JPG online, free

If you saved an image from a website and it arrived as a .webp file that something now refuses to open, this is the fix. WebP is efficient and every current browser displays it, but plenty of things outside a browser never caught up: ad platforms, print workflows, older desktop software, some office suites, and upload forms on sites that set their allowed file types years ago and never revisited them. JPG is the format almost nothing on the internet refuses.

Animated WebP files

Worth knowing before you convert: a WebP can hold an animation, and JPEG cannot. If your file is animated, only the first frame is kept. That is not a limitation of this tool — no JPG anywhere can store more than one frame — but it is the sort of thing better learned here than after you have replaced the original.

Transparency turns white

WebP supports a real alpha channel and JPEG does not, so any transparent areas are filled with white. For a photograph this changes nothing. For a sticker, an icon, or a screenshot with rounded corners, it means the background you could see through will come back solid white. If that is a problem, the file needs to stay in a format that supports transparency.

Picking a level for the kind of image you have

Best quality, Recommended, and Smallest file cover the range. Recommended is the default and is right for photographs. For flat graphics — logos, UI screenshots, hard-edged artwork — move up to Best quality: JPEG's compression is tuned for photographs and shows more artifacting around sharp edges and solid colour than WebP's does, so the extra quality is worth spending on that kind of image specifically.

Colour handling and mislabeled files

The colour profile is kept by default so nothing shifts, or you can convert to sRGB if the JPG is going on the web. Files are read by their actual content rather than trusted from the extension, so a WebP that was renamed along the way still converts correctly instead of failing.

Doing it in bulk

Convert up to 100 WebP files at once from your device, Google Drive, or a direct URL. Original filenames are kept. Everything is deleted from the servers within an hour, and you can remove any file yourself right away.

What you get

  • A JPG that upload forms, ad platforms, and older software will accept
  • Three quality levels, with a higher one available for flat graphics
  • Transparent areas filled with white rather than rejected
  • Predictable handling of animated WebP — the first frame is kept
  • Up to 100 files per batch with original filenames preserved
  • No account, no watermark, and files deleted within an hour

What's next?

Going the other direction to make your own images smaller? Convert JPG to WebP is the reverse. If the resulting JPG is still too large for what you need, Compress JPG reduces it further. And if you would rather keep the WebP and simply shrink it, Compress WEBP does that without changing format.

よくある質問

Because many sites now serve WebP by default — it is smaller than JPEG at the same visual quality, so it makes pages faster. Your browser displays it perfectly. The trouble starts when you try to use the file somewhere that never added support.

Only the first frame is kept. JPEG has no concept of animation, so no JPG from any tool can hold more than one frame. If you need the animation preserved, JPG is not the right destination.

Transparent areas are filled with white, since JPEG cannot store an alpha channel at all. On a photograph this is invisible. On an icon or a cut-out graphic, the transparent background becomes solid white.

Best quality. JPEG's compression is designed for photographs and produces more visible artifacting around text, sharp edges, and flat colour. The higher level keeps those clean, where the default is tuned for photographic detail.

Not for the conversion itself — either is decoded and re-encoded as JPG at the level you choose. A lossless WebP simply starts from a cleaner image, so there is no earlier compression loss being compounded.

Yes, up to 100 per batch, from your device, Google Drive, or a direct URL, with your original filenames kept.

WebP to JPG の使い方は簡単です。デバイス、Google Drive、または URL から最大 100 件のファイル(.webp)をアップロードし、必要に応じて設定を調整して「WebP to JPG」ボタンをクリックするだけ。数秒で処理が完了し、すぐにダウンロードできます。

もちろんです。ファイルは暗号化された安全な接続(HTTPS)でアップロードされ、自動的に処理されます。誰もファイルを閲覧することはありません。すべてのファイルは1時間以内にサーバーから自動削除され、ゴミ箱アイコンからいつでも即座に手動削除もできます。

はい!WebP to JPG は完全無料です。登録もメールアドレスも不要で、隠れた費用もありません。ファイルをアップロードして結果をダウンロードするだけです。

ダウンロードやインストールは不要です。MiniPNG はブラウザ上で完全にオンラインで動作するため、Windows、Mac、Linux、Android、iOS などあらゆるデバイスで利用できます。

1ファイルあたり最大 200MB までアップロードできます。この制限により、すべてのユーザーに高速で安定した処理を提供しています。

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