Auto Trim Image

Auto Trim Image finds where the real content of a picture starts and ends, and cuts away the empty border around it. That border might be see-through, like the space around an exported logo or a cut-out, or one flat colour, like the white margin around a screenshot, a scanned drawing or a product photo.

Before you press anything, a live preview shades exactly what will be cut and lists it in pixels for each side, so there are no surprises. Tolerance decides how different a pixel must be from the border to count as content, and “Ignore specks and noise” stops a stray dot or JPG blotch from blocking the trim. You can keep a margin of the original edge, add fresh padding in the trimmed colour, see-through or any colour, and save in the same format or as PNG, JPG or WebP.

It is handy for designers lining up logos, sellers tidying product shots, and anyone pasting screenshots into documents. It handles up to 50 pictures at once, and everything runs in your browser, so nothing is uploaded and there is no watermark.

1. Tap “Choose files”, drop pictures on the box, or paste one. You can add up to 50.
2. Under Trim, leave Auto on, or choose “See-through edges” or “Corner colour”. The “What gets cut” preview shades the parts that will go.
3. Adjust Tolerance if too much or too little is cut. Tap any row to check that picture in the preview.
4. Optionally type a number in “Keep a margin of” or “Add padding”, and pick the padding colour.
5. Pick a format under “Save as” and press Trim. Each row shows the new size; download one at a time or all as one ZIP.

• Auto mode trims see-through edges when the corners are see-through, otherwise edges matching the corner colour.
• Live “What gets cut” preview with the exact number of pixels removed from each side.
• Tolerance slider for slightly uneven or noisy backgrounds.
• “Ignore specks and noise”, so dust, JPG blotches or a stray pixel don’t stop the trim.
• Keep a margin of the original edge, and add padding filled with the trimmed colour, see-through or a colour you pick.
• Save as the same type, PNG, JPG or WebP. See-through areas become white in JPG.
• Batch up to 50 pictures. Each row shows old and new size; download singly or as one ZIP.
• Reads JPG, PNG, HEIC, WebP, AVIF, TIFF, GIF, BMP, SVG and ICO.
• Trimming only cuts: the part you keep is never resized or blurred, and PNG keeps it at full quality.

• Screenshots with a coloured window edge: use “Corner colour” and a low tolerance, so the coloured edge counts as content.
• If nothing is trimmed from a JPG, its border isn’t quite one colour. Raise Tolerance to 10–20.
• For logos, add 10–40 px of see-through padding after trimming, so they don’t touch the edge wherever you place them.
• A picture that is all one colour has nothing to keep; its row says so and it is skipped.
• The preview measures large pictures on a smaller copy, so its numbers can be a pixel or two out; the download is measured at full size.