For logos, icons, drawings and scans
Logos sent as JPG, icons on a white square, scanned stamps and drawings usually sit on a plain background. This tool makes exactly that color transparent, pixel by pixel, without any AI. It is fast, predictable and keeps fine details such as thin lines and small text that an AI cutout might soften.
When the image opens, the tool reads the most common color along the edges, usually white, and removes it starting from the borders. If that is not the background you mean, click it in the preview.
Connected area or all matching pixels
With Connected area only the background that touches the starting point disappears, the way a paint bucket fill works. White parts inside the design, such as the eyes of a character or a white letter on a colored badge, stay as they are.
With All matching pixels every pixel close to the color becomes transparent, including the holes inside letters like O, A and B. Use it for text and outlines where the background shows through the shapes.
Tolerance, soft edges and halos
Tolerance sets how different a pixel can be from the chosen color and still count as background. Raise it for JPG files, where compression leaves slightly gray pixels around the shapes; lower it when parts of the design that are close to the background color start to vanish.
Edges are blended so they do not look jagged, and the leftover background color is taken out of the half transparent edge pixels. That avoids the light outline (halo) a white background often leaves when you place the logo on a dark color. Check it with the Black preview.
Photos need a different tool
A photo of a person, a pet or a product almost never has one clean background color. For photos use the AI Background Remover, which finds the subject itself. This tool is the better choice for flat graphics.