How to Remove Background in Affinity Photo: 7 Fast and Accurate Methods

Removing a background in Affinity Photo can be quick, highly accurate, or a careful combination of both, depending on the image. A clean product shot, a portrait with flyaway hair, and a busy outdoor scene all require different tools. The key is knowing which method to use first, then refining the result with masks, selections, and edge adjustments.

TLDR: Affinity Photo offers several reliable ways to remove backgrounds, from the Selection Brush and Flood Select Tool to masks, channels, and the Pen Tool. For most users, the fastest workflow is to make a rough selection, apply a mask, and refine the edges. For professional results, especially with hair, glass, or complex details, combine multiple methods instead of relying on one tool alone.

1. Use the Selection Brush Tool for Fast Subject Cutouts

The Selection Brush Tool is usually the best starting point when the subject is clearly separated from the background. It works by detecting contrast and edges as you paint over the subject or background. This makes it ideal for portraits, animals, clothing, and everyday objects.

1. Open your image in Affinity Photo.
2. Select the Selection Brush Tool from the toolbar.
3. Set the mode to Add and paint over the subject.
4. Use Subtract mode to remove unwanted selected areas.
5. Click Refine in the context toolbar.
6. Adjust the edge, then output the result as a Mask.

This method is fast and reasonably accurate, but it depends on edge contrast. If the subject blends into the background, expect to spend more time refining the mask. For best results, use a smaller brush around detailed areas such as fingers, hair, or fabric edges.

2. Remove Solid Backgrounds with the Flood Select Tool

The Flood Select Tool, often compared to a magic wand, is excellent for removing plain or nearly uniform backgrounds. It selects pixels based on similar color and tone. If your image has a white, black, green, or studio backdrop, this can be the quickest method.

Choose the Flood Select Tool, click the background, and adjust the Tolerance setting until the selection includes the background without cutting into the subject. Hold Shift to add more areas to the selection if the background is not selected all at once.

Once the background is selected, avoid pressing Delete immediately unless you are working on a duplicate layer. A more professional approach is to click Mask Layer. This keeps the edit non-destructive, meaning you can repair mistakes later by painting on the mask.

Best for: product photos, logos, flat color backgrounds, catalog images.

3. Create a Precise Cutout with the Pen Tool

For hard-edged objects, the Pen Tool is the most accurate method. It is slower than automatic selection, but the results are clean and controlled. Use it for products, vehicles, furniture, packaging, and objects with clear geometric edges.

Zoom in and draw a path around the subject by placing anchor points along the edge. Use curved handles for rounded shapes. When the path is complete, convert it to a selection, then apply a mask. The advantage of this method is precision: you decide exactly where the cutout line goes.

The Pen Tool is not the best choice for hair, fur, smoke, or transparent fabric. However, for commercial product images, it remains one of the most dependable techniques. A carefully drawn path can look cleaner than any automatic selection.

4. Refine Hair and Soft Edges with the Refine Selection Dialog

Hair, fur, feathers, and soft fabric are the true test of any background removal workflow. In Affinity Photo, the Refine Selection dialog helps recover fine edge detail and reduce harsh cutout lines.

After making an initial selection with the Selection Brush, click Refine. Use the Matte brush around hair or soft edges. Affinity Photo analyzes the transition between subject and background, then improves the selected boundary.

• Border Width: expands the refinement area around the selection edge.
• Smooth: reduces jagged edges, but too much can remove detail.
• Feather: softens the edge slightly for a natural blend.
• Ramp: shifts the selection edge inward or outward.
• Output: choose New Layer with Mask for safe editing.

Use refinement carefully. Over-processing can create halos or blurry edges. If the original background color contaminates the hair, add a new background layer underneath while editing so you can judge the result more accurately.

5. Use Layer Masks for Non-Destructive Background Removal

A layer mask does not erase pixels; it hides them. This is one of the most important concepts in professional background removal. If you delete the background directly, mistakes are permanent unless you undo immediately. With a mask, you can return at any time and fix the edge.

After making a selection, click the Mask Layer icon. White areas of the mask are visible, and black areas are hidden. Select the mask thumbnail, then paint with a soft brush: black conceals, white restores, and gray creates partial transparency.

This method is especially useful after using automatic tools. You can quickly clean up missed spots, restore accidentally removed details, and soften transitions. For serious editing work, masks should be considered standard practice rather than an optional step.

6. Remove Complex Backgrounds with Channels

When the subject and background are difficult to separate with normal selection tools, channels can help. This method uses the contrast in the red, green, or blue channel to build a more accurate selection. It is useful for images where one channel shows a strong difference between the subject and background.

Open the Channels panel and inspect each channel. Look for the one with the clearest separation. Duplicate or use that channel as a basis for a selection, then increase contrast with Levels or Curves. The goal is to create a strong black-and-white separation: white for the subject, black for the background, or the reverse.

This technique requires more experience, but it can produce excellent results in difficult cases, such as semi-transparent fabric, smoke, mist, or fine hair against a contrasting sky. It is not always the fastest option, but it can be more accurate than brushing manually for complex edges.

7. Combine Background Removal with Inpainting for Cleanup

Sometimes removing the background is only part of the job. You may also need to clean up unwanted remnants, color fringes, or small background pieces trapped inside the subject. Affinity Photo’s Inpainting Brush Tool, Clone Brush Tool, and Healing Brush Tool can help finish the image.

After masking the background, inspect the cutout at high zoom. Look for halos, leftover pixels, and unnatural outlines. If you are placing the subject on a new background, add that background early so flaws become easier to see. A cutout that looks perfect on a transparent checkerboard may show problems on a dark or colored background.

For color contamination, add a slight inward shift using mask refinement, or paint carefully on the mask with a low-opacity brush. For small defects inside the subject, use healing tools on a duplicated layer. Keep your workflow organized by naming layers clearly, such as Original, Subject Mask, and New Background.

Recommended Workflow for Reliable Results

For most images, the best approach is not a single tool but a structured workflow:

1. Duplicate the original layer before editing.
2. Make an initial selection using the Selection Brush, Flood Select, or Pen Tool.
3. Apply the selection as a layer mask.
4. Use Refine Selection for hair, fur, and soft edges.
5. Manually improve the mask with a brush.
6. Check the cutout on different background colors.
7. Export as PNG if you need transparency.

Final Tips for a Cleaner Cutout

Work at high zoom, but regularly zoom out to judge the natural appearance of the image. Avoid overly sharp edges on portraits, because real photographs usually have subtle softness. For product images, keep edges cleaner and more defined. If the subject will be used on a specific background, test it on that background before exporting.

Affinity Photo gives you all the tools needed for fast and accurate background removal, but the best results come from choosing the right method for the image. Use automatic tools when speed matters, the Pen Tool when precision matters, and masks whenever quality matters. With a careful, non-destructive workflow, you can create professional cutouts that remain editable and reliable.