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Comment utiliser Rognage auto
- 1
Upload your image
Drop a JPG, PNG, or WebP image onto the upload area.
- 2
Adjust sensitivity
The slider controls how aggressively near-white or near-transparent borders are trimmed. Higher = more trimming.
- 3
Download the result
Click Download to save the trimmed image as PNG.
Fonctionnalités
- +Auto-detect and remove white or transparent borders
- +Adjustable sensitivity threshold
- +Live before/after comparison
- +100% browser-based — no upload required
- +No watermark, no signup
Questions fréquentes
What counts as a 'border' to trim?
Pixels with alpha < threshold (transparent) or all RGB channels > 255-threshold (near-white) are considered background border and removed.
Will it trim content from my image?
Only if the content itself is near-white or transparent at the edge. Reduce the threshold slider to make trimming less aggressive.
Does it trim all four sides?
Yes — top, bottom, left, and right are all trimmed independently.
Outils connexes
If you need the next step, try Rogner l'image, Redimensionneur d'image, Arrière-plan transparent, Arrondir les coins.