轉换圖片格式
把圖片轉成 JPG、PNG、WebP、AVIF、GIF、BMP 或 TIFF。
把images拖到這裡
JPG, JPEG, PNG, WEBP, GIF, BMP… · up to 100 MB per file · up to 20 files
檔案在 2 小時后刪除，你也可以下載后立即刪除。
轉换圖片格式的使用方法（3 個步驟）
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Add your images
Drop up to 20 images on the page, or pick them from your device, Google Drive or a direct link. Mixed formats are fine.
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Choose the output format
Pick JPG (default), PNG, WebP, AVIF, GIF, BMP or TIFF. The hint under the buttons explains what each format is good for.
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Convert and download
Press “Convert images”, download each file or a ZIP of all results, or continue to Compress image or Image to PDF.
功能特色
Convert image fixes the everyday format problem: a WebP downloaded from the web won’t open in older software, or a PNG is too heavy for a web page. Choose one target format for up to 20 images at once; JPG and BMP fill transparent areas with white, while PNG, WebP and AVIF keep them.
- Seven output formats: JPG, PNG, WebP, AVIF, GIF, BMP and TIFF.
- Up to 20 images per run, with a ZIP that bundles every result.
- Transparency is kept for PNG, WebP and AVIF and filled with white only for JPG or BMP.
- File names stay the same apart from the extension, e.g. “banner.webp” becomes “banner.jpg”.
- Works with images from your device, Google Drive or a link, up to 100 MB each.
常見問題
Should I use WebP or AVIF for my website?
Both are lighter than JPG at similar quality. AVIF is usually smaller still but needs a modern browser; WebP is the safer choice when wide support matters.
Why does my PNG get a white background as JPG?
JPG cannot store transparency, so transparent areas are filled with white. Choose PNG, WebP or AVIF to keep them transparent.
Will converting a JPG to PNG make it sharper?
No. PNG preserves what the JPG already contains but cannot restore lost detail, and the PNG file is often larger.
What happens to an animated GIF converted to JPG?
A JPG holds a single still frame, so the animation is lost. Keep GIF or WebP if you need the motion.