Pure white means exactly white
Automated marketplace checks read the corners and look for hex ffffff. A light grey that looks cleaner to a human is the most common reason a technically good photo gets rejected.
Change background
Change a background to the colour they asked for.
Pure white for a listing, a flat colour for an ID photo, or a studio gradient. The subject is cut by a model on this device and composited at full resolution.
Runs on this devicePure white presetFull resolution
The short answer
To change the background of a photo, add the image, choose a colour or a gradient, and press the button. A matting model runs on your device, separates the subject from what is behind it, and paints the new background underneath at the full size of the original. Pure white is the first swatch, which is what most marketplace rules mean. Nothing is uploaded and the export carries no watermark.
Put a subject on a new background now
Drop a photo, click to browse, or paste one from the clipboard. The first run downloads the model and counts the megabytes as they arrive; after that it is cached and the composite is immediate. The gradient swatches are drawn from the same numbers the export is painted with.
Before
Presets
Put the subject on
Background colour
Pure white is what most marketplaces mean when they ask for a plain background.
Cut-out quality
Save as
PNG and WebP carry a real alpha channel. JPG does not, so a cut-out saved as JPG lands on a solid colour.
AI model
Checking what this device can run.
Add a photo first.
Checking what this device can do. Nothing is uploaded.
Add a photo and run the tool. The download appears here.
Try another tool on the same photo
The short version
What to know before you start
Most background changes are not creative decisions. They are compliance. A marketplace says the main image must be on pure white, a visa application says plain light grey, a company directory says the same colour for everyone, and the job is to satisfy a rule that will be checked by a script reading the corner pixels. That is why the first swatch here is exactly hex ffffff rather than a tasteful off-white: a studio sweep looks better and fails the check.
The part that takes judgement is the edge. Compositing onto a solid colour is the situation where a cut-out looks worst, because the half-transparent pixels around the subject still carry the colour of the background it was shot against. Against white that mixture reads as a grey halo, against black as a bright rim. This tool tightens the mask a fraction whenever the destination is opaque, which is the right default; the rest is a choice about how soft you want the join to be.
Opaque backgrounds show every edge flaw
Transparency hides a soft mask; a flat colour does not. This is where it pays to look at the hair at full zoom before downloading, and to try the detailed quality setting.
The gradient in the picker is the gradient in the file
Both come from one table of two colours and an angle, painted at the size of your photo rather than scaled from a thumbnail, so the swatch cannot promise something the export does not deliver.
JPG is the right answer here
The background is opaque now, so there is nothing for an alpha channel to carry. JPG at high quality is smaller and is what upload forms expect. PNG is for when the file goes into a design tool next.
Full resolution, always
The model reads a bounded copy because it resizes internally regardless. The mask is scaled back up and applied to the original, so the export is the size the photo arrived at.
A photographic backdrop is a different job
This page paints colours and gradients. For a real scene behind the subject, take a transparent PNG from the cut-out tool and place it over your own image in a layout tool.
Step by step
How do you change the background of a photo?
Five steps, all inside this page, with the photo read from disk into this tab and nowhere else.
- 1
Add the photo
Drag a file onto the panel, click it to browse, or paste an image from the clipboard. The tool reads the file, applies any camera rotation, and shows its real dimensions.
- 2
Let the model load the first time
The panel counts the megabytes as the model arrives, then spends a few seconds setting it up on your graphics card. That step is silent and it is not stuck. It happens once per device.
- 3
Pick a colour or a gradient
Take pure white from the first swatch for a marketplace listing, pick any other colour from the picker, or switch to gradients and choose one of the six studio washes.
- 4
Run the composite
Press the button. The model finds the subject, the mask is tightened slightly because the destination is opaque, and the new background is painted underneath at full size.
- 5
Check the edges, then download
Look at the hair, the thin parts and anywhere the subject touched something the same colour. Adjust the edge softness or the quality setting and run again if needed, then download.
What do marketplaces actually mean by a white background?
Pure white, checked mechanically. Amazon’s main image rule is the strictest of the common ones and it is explicit that the background must be pure white, which its systems verify rather than eyeball. Etsy, Shopify and Walmart are less prescriptive and still expect a plain, uncluttered background, and a listing on pure white will satisfy all of them.
The practical consequence is that a studio sweep, where the background falls off to light grey at the edges, is worse than useless: it looks more professional and it fails. Take the first swatch, which is exactly hex ffffff across the entire frame.
The other half of a listing rule is the pixel dimensions, which is a different job. Do the background first and then set the size with the resizer, which has the marketplace canvases as presets.
How do I stop a halo around the subject?
A halo is the old background still present in the edge pixels, so the fixes are all about cutting slightly further in. This tool already applies a mild tightening whenever the result goes onto an opaque colour, which is why a cut-out here looks cleaner on white than the same mask exported as transparency would.
Beyond that, take the edge softness to zero. Feather is the right choice for a cut-out that will land on an unknown background and the wrong one when you can see the background right now and it is flat.
The remaining lever is the source photo, and it is by far the largest. A subject shot against something a different tone from itself cuts out cleanly at two megapixels; a subject the same tone as the wall behind it is hard at forty. If a halo is unavoidable and the photo matters, reshoot rather than re-adjust.
When is a gradient better than a flat colour?
When nobody is checking. A gradient gives a subject somewhere to sit: the darker end reads as depth and the lighter end reads as light falling, which is the whole reason studios use sweeps. On a portfolio page, a social crop or an internal directory, a studio grey wash looks considerably less flat than pure white.
When something is checking, a gradient fails. Marketplace scripts want one value across the frame, and passport and visa specifications are usually written as a single plain colour with no shadow. Those are cases for the colour picker.
The six presets here are deliberately quiet. A saturated gradient behind a product competes with it, and every gradient picker that offers unlimited stops mostly gets used to prove that.
Which subjects will not sit convincingly on a new background?
Glassware and anything see-through. A bottle is partly transparent and it also refracts whatever was behind it. A single alpha channel can express the first and not the second, so the bottle arrives on white still carrying a faint memory of the old room inside it.
Hair against a matching tone. The model will find an edge; whether it is the right edge depends on contrast that may not exist in the photograph.
Fine mesh. Chain-link, lace and spokes lose their small holes, which on a new background shows up as a solid patch where light should pass.
In all three cases the tool produces a usable result quickly and a perfect one not at all. Knowing which you are looking at is worth more than any control on this page.
| Property | Detail |
|---|---|
| Input formats | JPG, PNG, WebP, AVIF, GIF, BMP. HEIC where the browser can decode it. |
| Backgrounds | Any flat colour, including pure white at hex ffffff, plus six studio gradients. |
| Output formats | JPG, PNG or WebP at the input dimensions. |
| Model, detailed | BiRefNet lite, fp16, about 115 MB, MIT licensed. |
| Model, fast | MODNet, fp16, about 13 MB, Apache 2.0 licensed. |
| Download | Once per device, cached by the browser and shared with the other background tools. |
| Backends | WebGPU where available, single-threaded WebAssembly everywhere else. |
| Edge handling | Mask tightened slightly onto opaque backgrounds, plus 0 to 8 pixels of feather. |
| Resolution | Full. The gradient or colour is painted at the size of your photo. |
| Where it runs | In this browser tab, on your device, in a background thread. |
Slide the table sideways to see every column.
Worth avoiding
Where this usually goes wrong
Using an off-white that looks nicer
A marketplace check reads the corner pixels and wants pure white. A tasteful cream passes a human review and fails the script, which is the single most common avoidable rejection.
Leaving the edge feathered on a flat colour
Feather exists so a cut-out blends into an unknown background. When the background is right there and it is flat, softness only widens the band where the old colour still shows.
Changing the background before checking the size rule
Listing rules usually have two halves, a background and a pixel dimension. Do the background here, then set the canvas with the resizer, which has the marketplace sizes as presets.
Saving to PNG out of habit
The background is opaque now, so the alpha channel has nothing to carry. PNG makes the file several times larger for no visible benefit unless it is going into a design tool next.
Expecting a gradient to pass a passport spec
ID photo specifications are written as a single plain colour with no shadow. Use the colour picker for those, and save the gradients for portfolio and social work.
Compositing a glass product and shipping it
Bottles and glassware come out flat, because a single mask cannot describe refraction. Look at the result at full size before it becomes the main image on a listing.
Questions
What people ask about this tool
Every answer is in the page source, so a reader and an answer engine get the same words.
How do I put a product photo on a pure white background?
Add the photo, choose a colour, and take the first swatch, which is pure white at hex ffffff. Marketplace rules that ask for a white background nearly always mean that exact value rather than a light grey studio sweep, and an automated check will read the corner pixels to confirm it. The pure white preset above sets the colour and the format in one click.
Why does my subject have a grey outline on white?
The pixels along the edge genuinely contain a mixture of your subject and the background it was photographed against, because that is what the camera recorded. Laid over white, the mixture reads as a halo. This tool tightens the mask slightly whenever the result goes onto an opaque colour, which pulls the cut inside that fringe. If it is still visible, take the edge softness to zero, and prefer a source photo where the subject is not the same tone as what is behind it.
Can I use my own background image?
Not on this page today. It offers flat colours and six gradients, both painted at full resolution behind the subject. If you need a photographic backdrop, use the transparent background tool to get a PNG with a real alpha channel and place it over your own image in whatever layout tool you already use.
Which format should I save to?
JPG for anything heading to a marketplace or an upload form, because the background is now opaque and there is nothing for an alpha channel to carry. PNG if the file is going into a design tool and you want it lossless. WebP if the size matters and you know the destination reads it. The tool defaults to JPG at high quality, which is what listing rules almost always expect.
Do the gradients look the same in the export as in the picker?
Yes, by construction. The swatch on the button and the wash painted into the file come from the same two colours and the same angle in the same table, so there is no second set of values that could drift. The gradient is painted at the full size of your photo rather than scaled up from a thumbnail.
Does the background change reduce my resolution?
No. The model reads a bounded copy of the picture, because it resizes everything internally anyway, and the mask it produces is then scaled up and composited against the untouched original. A 24 megapixel photo comes out 24 megapixels, with no watermark on the export.
Is the photo uploaded anywhere?
No. The first run downloads the AI model from a content delivery network and that is the only network traffic involved. After that the model is cached, the photo is read from disk into this tab, and everything happens in a background thread in the same tab. The tool keeps working with the connection off.
What kinds of photo does this struggle with?
The same ones every matting model struggles with. Hair against a busy background of a similar tone is the hardest common case. Clear glass and water cannot be expressed by a single alpha channel, so bottles and glassware look flat on a new background. Chain-link, wire mesh and lace lose their small holes. A subject the same tone as its background is much harder than a subject that contrasts with it.
Same subject, different destination.
Keep the room and blur it instead of replacing it, take a transparent PNG into your own layout, or set the exact canvas a marketplace asks for. Everything here runs on your device.