Make an image background transparent

How it works

1. 1

   Upload your image

   Drag in a JPG, PNG or WebP up to 10 MB. Nothing to install and no account required for your first few images each day.

2. 2

   Let the background come off

   The subject is detected automatically and the background is erased, including around hair, fur and thin edges.

3. 3

   Download the transparent PNG

   You get a PNG with a real alpha channel at the original resolution, ready to drop onto any colour or layer.

What 'transparent' actually means in an image file

A transparent background is not a white background. Transparency lives in a fourth channel — the alpha channel — that sits alongside red, green and blue and records how opaque each pixel is. Where alpha is zero the pixel is invisible and whatever is underneath shows through.

This matters because a lot of tools claim a transparent result and hand back an image with white pixels where the background used to be. That looks correct on a white web page and wrong everywhere else: put it on a dark slide, a coloured banner or a patterned page and a white rectangle appears around your subject. Cutola writes real alpha, so the cutout stays clean on any surface.

It also matters for edges. A good cutout uses partial alpha — pixels that are, say, 40% opaque — along soft boundaries like hair and fur. That is what stops a cutout from looking like it was traced with scissors.

Which formats can hold transparency

This is the reason every cutout on Cutola comes back as a PNG even when you uploaded a JPG. It is not a preference, it is the only format that can carry the result.

• PNG — the safe default. Lossless, universally supported, keeps full alpha. This is what Cutola returns.
• WebP — also supports alpha and produces smaller files, useful when page weight matters.
• JPG — cannot store transparency at all. A JPG has no alpha channel, which is why a cutout can never be saved back as a JPG without picking a solid colour to fill in.
• PDF and SVG — can hold transparency, but they are document and vector formats rather than photo formats.

When you want transparent, and when you want a colour

Transparent is right when the image will be placed on top of something you do not control yet: a website hero, a slide deck, a t-shirt print, a thumbnail, a sticker.

A solid background is right when a platform demands one. Amazon's main listing images require pure white, and many print workflows are happier with a defined backdrop than with alpha. In those cases remove the background and then fill it — the background replace tool puts any colour you pick behind the cutout in one more click.

Getting the cleanest possible cutout

• Shoot or pick an image where the subject is clearly separated from what is behind it — contrast in colour or brightness helps most.
• Avoid heavy motion blur; a blurred edge has no boundary for any tool to find.
• Upload the largest version you have. A 400px image cannot produce edge detail that was never captured.
• For hair and fur, an evenly lit background beats a busy one — a bookshelf behind someone's head is the hardest case there is.
• If your source is small, run the cutout first and then upscale, rather than the other way round.

Keep exploring