The short answer
Why use Trim Transparent?
Exported logos, stickers, and cut-outs often sit in a canvas much bigger than the content, which throws off alignment and spacing in layouts. Finding the exact edge by hand is fiddly; here it is measured pixel by pixel.
Alpha threshold runs from 0 to 254 on the 0 to 255 opacity scale and starts at 0. At 0, any pixel with even a trace of opacity counts as content. At 10, pixels at about 4% opacity or less count as empty. The preview shows the trimmed result as you move the slider, and Create crop saves it.
Soft drop shadows and glows fade out very gradually, so they are usually what keeps a canvas large. A higher threshold cuts into them and can leave a shadow with a straight edge. Check the edges at full size before you raise it past about 30. A fully transparent image gives an error, since there is nothing to keep.
Remove White BG and Green Screen Remover create the transparency in the first place; run one of them and then trim. Crop Image is the choice when you want a fixed size or ratio rather than the content edge. Square Image adds even padding back around a trimmed logo.
Where Trim Transparent fits
Logo exports
Remove the padding a design app left around an exported logo.
Sticker packs
Trim each sticker PNG so they line up in a chat app.
Game sprites
Crop sprite frames to their content before packing a sheet.
Start to finish
How to use Trim Transparent
- 01Tap Choose image and pick a PNG with a transparent border.
- 02Leave Alpha threshold at 0 or raise it if a faint shadow keeps the canvas large; the preview shows the trim.
- 03Tap Create crop, check the edges, then tap Download result.
What to expect from Trim Transparent
| Check | What it means here |
|---|---|
| Supported input | JPEG, PNG, WebP, GIF, BMP, SVG and browser-supported AVIF images |
| Main controls | Crop frame position and size, plus output width and height |
| Output | PNG, with transparent corners for shaped crops |
| Working limit | 50 MB and 50 megapixels per image |
Trim Transparent tips
- Threshold 10 treats pixels at about 4% opacity as empty.
- Above 30, soft shadows can end with a straight cut.
- A JPEG has no transparency, so nothing gets trimmed.
- Nothing is resized; only empty border is removed.
Trim Transparent FAQ
Something missing? Ask us.
Why didn't it trim anything?
Does it delete faint pixels inside the image?
Does Trim Transparent upload my file?
Is Trim Transparent free to use?
Why did Trim Transparent fail or look wrong?
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