什麼是 圖片格式轉換器?
免費線上圖片格式轉換工具。在 PNG、JPG、WebP、GIF 等格式之間轉換。
免費線上圖片格式轉換工具。在 PNG、JPG、WebP、GIF 等格式之間轉換。
Upload your image (PNG, JPG, WebP, AVIF, BMP, GIF, SVG, or ICO).
Select your target output format (PNG, JPG, WebP, AVIF, or BMP).
Pick a quality preset or adjust the slider for lossy formats.
Toggle lossless mode for WebP if needed.
Set a background color if the source has transparency and the target is opaque.
Drag the comparison slider to preview differences, then download.
AVIF 是基於 AV1 影片編碼的次世代圖片格式。在相同品質下,檔案大小比 JPEG 小約 50%。Chrome 85+、Firefox 93+ 與 Edge 85+ 支援。
Lossless WebP preserves every pixel of the original — no quality loss, but larger files. Lossy WebP uses compression to reduce file size, with adjustable quality. Toggle Lossless WebP on when you need pixel-perfect output.
可以。上傳 SVG 檔案,選擇 PNG(或 JPG/WebP/AVIF/BMP)作為輸出格式。SVG 將以其原始尺寸在畫布上柵格化。
No, JPG does not support transparency. If your source image has transparent areas (PNG, GIF, WebP, or SVG), the converter will fill them with the background color you choose. White is the default.
For Web use, 80-92% offers a good balance between quality and file size. For archival purposes, use PNG or Lossless WebP (lossless). The presets — Maximum (100%), Excellent (92%), Good (80%), Standard (60%), and Minimum (30%) — help you choose quickly.
不會。所有處理都在瀏覽器中透過 Canvas API 進行,你的圖片從不離開你的裝置。
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