ImageFlow

Trim Transparent Pixels

Remove fully transparent space around visible pixels in each image.

    Output settingsReview these options before processing Customize

    0 removes only fully transparent space. Higher values trim more of a soft edge.

    Processed locally · originals unchanged

    See what changes

    Before and after

    Trim finds the visible content and removes empty transparent space outside it. It keeps holes inside the image. White or other opaque margins need cropping instead.

    Sample images processed with this tool. Your result depends on your image and settings.

    Remove transparent outer margins

    Trim faint edges: 0 · PNG output

    Before480 × 360

    Orange, gold, and teal mark with transparent outer margins and a central hole

    After240 × 180

    The geometric mark cropped to its visible bounds with the transparent central hole retained

    This 480 × 360 PNG becomes 240 × 180 without scaling the visible mark. Its central transparent hole remains. A higher threshold can crop faint outer edges; inspect the result before downloading.

    Download this example’s original PNG: Remove transparent outer margins

    Before you start

    Trim transparent borders without resizing visible content

    • ImageFlow crops to the smallest rectangle containing pixels above the selected transparency threshold.
    • A threshold of 0 removes only fully transparent space; higher values can trim faint antialiased edges.
    • Every result is a PNG. No output is created when the image is fully transparent or has no trimmable border.