100% local
IMAGE

Convert JPEG
to WEBP

Modern compression standards.

WEBP typically achieves better compression efficiency than JPEG at equivalent perceived quality. The result is a smaller file that still looks or sounds the same to most listeners and viewers.

— Drop area

為什麼要轉換

Why convert JPEG to WEBP

01

Modern compression standards

WEBP typically achieves better compression efficiency than JPEG at equivalent perceived quality. The result is a smaller file that still looks or sounds the same to most listeners and viewers.

02

Broader cross-platform support

WEBP is accepted by a wider range of image viewers, editors, and content systems than JPEG. The conversion removes a recurring compatibility friction without changing what the file actually contains.

03

Lower storage and bandwidth cost

WEBP files are typically smaller than their JPEG counterparts, which reduces hosting, transfer, and storage costs at scale. The savings compound when serving the same content to many recipients.

— 如何轉換

三步將 JPEG 轉為 WEBP.

  1. 01

    開啟 LocalConvert

    在任何現代瀏覽器中造訪本頁 —— 無需安裝、無需註冊、無需外掛。

  2. 02

    拖入或選擇你的 JPEG 檔案

    將 JPEG 檔案拖入放置區,或點擊從你的裝置中選取。

  3. 03

    點擊轉換

    轉換完全在你的瀏覽器中進行。完成後,WEBP 檔案會自動下載至你的裝置。

品質與保真度

品質與保真度

  • Lossy to lossy: a second generation of compression artifacts is possible.
  • Target supports alpha but the source has none, so the output is fully opaque.
  • Metadata (EXIF/tags) is preserved where the source provides it.
  • WEBP can be lossy or lossless — switch modes for pixel-perfect output if needed.
透明度 JPEG ✗ WEBP ✓
色彩深度 8-bit RGB 8-bit RGBA
保留中繼資料

格式規格

格式規格

JPEGWEBP
副檔名.jpeg .jpg.webp
MIME 類型image/jpegimage/webp
推出時間19922010
維護者JPEG Group / ISOGoogle
魔數FF D8 FF52 49 46 46 ?? ?? ?? ?? 57 45 42 50
規格檢視規格 ↗檢視規格 ↗

相容性

這些格式可用的地方

JPEG

Windows
原生
macOS
原生
iOS
原生
Android
原生
Chrome
原生
Firefox
原生
Safari
原生
Edge
原生

WEBP

Windows
原生
macOS
原生
iOS
原生
Android
原生
Chrome
原生
Firefox
原生
Safari
原生
Edge
原生

為什麼選 LocalConvert

LocalConvert 的比較

CategoryLocalConvert雲端轉換器
隱私Files never leave your device. The whole pipeline runs in your browser via WebAssembly.Files travel to a remote server, sit in queue storage, and may be retained for analytics or moderation.
費用Free, no signup, no daily quotas.Often free for small files; paid tiers for batch / large / commercial use.
限制Limited only by your device's memory and CPU. Multi-GB files OK on desktop.Typical 100 MB to 1 GB per-file caps, plus rate limits.
— The formats
From · JPEG

Joint Photographic Experts Group

A lossy format for photographic images that strikes a strong balance between size and quality.

Typical uses
Photos, web images, email attachments.

To · WEBP

Web Picture format

A modern image format from Google offering ~25–35% smaller files than JPEG and PNG, with both lossy and lossless modes and alpha support.

Typical uses
Web-first imagery, faster page loads, modern browsers.

— FAQ

常見問題.

JPEG 轉 WEBP 是免費的嗎?

是的。LocalConvert 完全免費,無需註冊,也沒有每檔案或每日的限制。

我的檔案會被上傳到任何地方嗎?

不會。JPEG 到 WEBP 的轉換完全在你的瀏覽器內透過 WebAssembly 完成 —— 你的檔案永遠不會離開你的裝置。

檔案大小上限是多少?

沒有固定上限 —— 實際限制取決於你裝置的可用記憶體。在低記憶體裝置上,非常大的檔案可能耗時較久或失敗。

可以離線使用嗎?

可以 —— 頁面載入後,JPEG 到 WEBP 的轉換無需網路連線即可運作。重新開啟頁面一次即可快取。

轉換會保留品質嗎?

LocalConvert 使用業界標準工具(FFmpeg、ImageMagick、Pandoc)—— 品質與專業人員在命令列中使用的相當。有損格式每次重新編碼仍會損失一些品質。

— Related

或轉換這些.

瀏覽所有轉換
參考資料

格式參考資料

Last verified:

100% 本機轉換.

JPEG to WEBP is processed in your browser with WebAssembly. No upload, no tracking, no limits. Your file never leaves your device.