How do I convert a JPG to a PNG with a transparent background?

Add the JPG, click the background color in the preview and raise Tolerance until it is gone. Then download the PNG.

How do I remove a white background from a signature?

Add the photo or scan, keep white as the color, choose Remove Everywhere so the paper inside the letters goes too, and add a little Soft edge.

Why is there a white line around my logo?

JPG compression blends the edge with the background. Raise Soft edge, which makes those pixels partly transparent and removes the white from them.

Does it work with photos of people?

Only if the background is one plain color. It removes a color, it does not recognise people or objects.

Is my image uploaded?

No. The background is removed in your browser.

JPG to Transparent PNG: Remove the Background Color from a JPG (Free)

Turn the white or colored background of a JPG into transparency and save a PNG. Click the color to remove, adjust how much is removed and preview the result on any background.

How to make a JPG background transparent

Add a JPG. The most common color along the edges is picked as the background.
If the wrong color was picked, click the background in the preview.
Raise Tolerance until the whole background is gone, and Soft edge until the edges look smooth.
Check the result on a dark background, then click Download PNG.

Why a JPG has no transparency

The JPG format stores only color, not transparency. Every pixel is solid, so a logo on a white JPG always has a white box around it. PNG stores an extra value for every pixel that says how see-through it is. This tool sets that value from the color of each pixel.

The settings

Color to remove: the background color. Click the preview or use the color box.
Tolerance: how different a pixel may be from that color and still be removed. JPG compression leaves small color variations, so a little tolerance is almost always needed.
Soft edge: pixels just outside the tolerance become partly transparent, and the background color is taken out of them. This removes the light halo around dark shapes.
Remove: Background only clears the color that touches the edges of the image and leaves the same color inside the object, such as the white of an eye. Everywhere clears the color in the whole image, which suits signatures and text with holes, such as the inside of an O.
Trim empty edges: crops the PNG to the visible content.

What it works best for

Logos and icons on a plain background.
Scanned or photographed signatures and stamps. Use Everywhere so the paper inside letters disappears too.
Product photos taken on a white or green backdrop.
Clip art, diagrams and screenshots.

It removes one color, so it is not made for portraits or photos with a busy background. For those, a tool that detects the subject works better.

Tips for clean edges

Use the largest JPG you have. Compression noise is smaller relative to the shape.
Raise Tolerance in small steps. When parts of the object start to disappear, go back a step and use Soft edge instead.
Check the result on black and on the color it will be used on.

Related tools

To keep the background and only change the format, use JPG to PNG. Turn the transparent PNG into a favicon with PNG to ICO or the favicon generator, or crop it further with the image cropper. The JPG vs PNG guide explains transparency in more detail.