圖片尺寸調整工具
將任意圖片調整為自訂尺寸，全部在你的瀏覽器中完成，無需上傳。
如何使用本工具
- 1
Click the file picker and choose an image (JPG, PNG, WebP, GIF, or any format your browser can decode).
- 2
The Width and Height fields auto-fill with the image's original pixel dimensions.
- 3
Edit the Width and/or Height number fields to the size you want, in pixels.
- 4
Click Resize to render the result, then click Download to save it as a PNG.
什麼是圖片尺寸調整工具？
尺寸調整透過canvas API在用戶端完成。選擇以像素為單位的精確寬度和高度。為獲得最佳品質，請縮小而非放大：放大圖片永遠無法增加細節，而縮小則能保留細節。
常見使用場景
Shrinking a phone photo to a fixed pixel width before attaching it to a forum post or support ticket.
Generating a square avatar by entering equal Width and Height values for a profile picture.
Producing a smaller preview thumbnail of a large screenshot for documentation.
Quickly checking how a logo looks at an exact pixel size like 200x200 before handing it to a designer.
Downscaling an oversized image so it fits within a CMS or email client's pixel limits.
Converting an image to PNG while resizing it, since the output is always saved as PNG.