Enable Pixel Brush in Pixelmator on Mac

To enable the Pixel Brush in Pixelmator on a Mac, open any image or create a new document, then select the Paint tool from the Tools palette (or press P). The Pixel Brush is the default brush mode for the Paint tool; if you don’t see it, ensure you’re in Pixelmator’s standard editing mode, not the Layers or Effects view, and check that the tool options bar at the top shows “Pixel Brush” as the active brush type.

What Is the Pixel Brush?

The Pixel Brush is Pixelmator’s core painting tool. It works by applying color directly to the pixels of a layer, similar to how a traditional brush applies paint to a canvas. Unlike vector-based tools (like the Shape or Pen tools), the Pixel Brush creates raster marks that are resolution-dependent—meaning they become part of the image’s pixel grid. This makes it ideal for digital painting, retouching, and adding texture.

In Pixelmator (the classic Mac app, not Pixelmator Pro), the Pixel Brush is part of the Paint tool. It offers a variety of settings, including brush size, hardness, opacity, and blending mode. You can also load custom brushes or use the built-in brush library. The brush is enabled by default when you select the Paint tool, but if you’ve changed the tool’s mode, you may need to switch it back.

How to Enable and Use the Pixel Brush

Here are the exact steps to enable and start using the Pixel Brush in Pixelmator on a Mac:

1. Launch Pixelmator and open an existing image or create a new document (File > New).
2. Select the Paint tool from the Tools palette (the brush icon, or press P).
3. In the tool options bar at the top of the window, confirm that the brush mode is set to Pixel Brush. If you see options like “Smudge” or “Erase,” click the dropdown and choose Pixel Brush.
4. Adjust the brush size and hardness using the sliders in the tool options bar, or use the bracket keys [ and ] to change size on the fly.
5. Choose a color from the color well or the Colors panel (View > Show Colors).
6. Click and drag on the canvas to paint. The brush will apply color to the active layer.

If the Paint tool isn’t responding, make sure you have a layer selected in the Layers panel—you can’t paint on a locked background layer or an empty layer mask.

Common Issues and Fixes

Sometimes the Pixel Brush seems unavailable or doesn’t work as expected. Here are the most common problems and their solutions:

• Brush not painting: Check that the layer is not hidden (eye icon) and is unlocked. If the layer is a smart object or a vector shape, you may need to rasterize it first (Layer > Rasterize).
• Brush is painting with eraser or smudge effect: Look at the tool options bar—the mode may have been changed. Click the mode dropdown and select Pixel Brush.
• Brush is too large or too small: Use the size slider or bracket keys. Also check the zoom level—if you’re zoomed way in, the brush may appear huge.
• Brush is not showing the chosen color: Ensure the color well is set to the color you want, and that the layer’s opacity is not set to 0%.
• Brush lag or performance issues: Large brush sizes on high-resolution images can be slow. Try reducing the brush size or closing other apps to free up memory.

Pixel Brush vs. Other Brush Modes

Pixelmator’s Paint tool offers several modes, and understanding the difference helps you choose the right one:

• Pixel Brush: The standard painting mode—applies color with a hard or soft edge, respecting opacity and blending modes.
• Smudge: Drags existing pixels, creating a smearing effect. Useful for blending colors.
• Erase: Removes pixels, revealing transparency or the layer below.
• Blur: Softens areas by blurring pixels.

If you’re looking for a brush that behaves like a real paintbrush with texture, the Pixel Brush is the one. For non-destructive editing, consider using a layer mask instead of erasing.

Customizing the Pixel Brush

Pixelmator allows you to customize the Pixel Brush to suit your workflow:

• Brush Library: Click the brush thumbnail in the tool options bar to open the brush library. You can choose from presets like Round, Soft, or Square, and adjust spacing and angle.
• Import Custom Brushes: Pixelmator supports ABR brushes (from Photoshop) and PNG-based brushes. To import, go to the Brush Library and click the gear icon, then choose Import Brushes.
• Save Presets: After adjusting the settings, click the gear icon in the Brush Library and select “New Brush Preset” to save your custom brush for future use.

These features are available in Pixelmator (classic) on macOS. Pixelmator Pro has a similar but more advanced brush engine, with additional controls like grain and dual brushes.

Pixel Brush in Pixelmator Pro vs. Classic

If you’re using Pixelmator Pro, the Pixel Brush is also the default for the Paint tool, but the interface differs slightly. In Pixelmator Pro, the Paint tool is in the Tools sidebar, and the brush settings appear in the Tool Options panel on the right. You can still use the bracket keys for size, and the brush library is accessible from the Brush dropdown. The core functionality is the same, but Pro offers more brush customization, including texture and dynamics.

For classic Pixelmator, the steps above apply. If you’re on a newer macOS version and using Pixelmator Pro, the process is similar but the menus may be labeled differently. In both cases, the Pixel Brush is always available—you just need to select the Paint tool and ensure the mode is set correctly.

Frequently Asked Questions

Why is my Pixel Brush not showing up in Pixelmator?

If you don’t see the Pixel Brush option, you might be using the wrong tool. The Pixel Brush is part of the Paint tool, not the Eraser or Smudge tools. Select the Paint tool from the Tools palette (or press P), and check the tool options bar for the brush mode dropdown. If you’re in a special mode like Quick Mask, exit it (press Q) to return to normal editing.

Can I use Photoshop brushes in Pixelmator?

Yes, Pixelmator supports ABR brush files (Photoshop’s brush format). To import, open the Brush Library, click the gear icon, and choose Import Brushes. Navigate to the .abr file and select it. The brushes will appear in your library, though some advanced dynamics may not translate perfectly.

How do I change the brush size quickly?

Use the left and right bracket keys [ and ] to decrease or increase brush size. You can also hold down the Option key and drag horizontally on the canvas to adjust size interactively (in Pixelmator Pro). For precise control, use the size slider in the tool options.

Why is my brush painting with a hard edge even when I set softness?

Check the hardness slider in the tool options bar. If it’s set to 100%, the brush will have a hard edge. Lower it to 0% for a soft edge. Also, ensure you’re not using a brush preset that has a fixed hardness—some custom brushes may override the slider.

Can I use the Pixel Brush on a layer mask?

Yes, you can paint on a layer mask using the Pixel Brush. Select the layer mask thumbnail in the Layers panel, then use the Paint tool with black or white to hide or reveal parts of the layer. This is a non-destructive way to edit transparency.

Is the Pixel Brush available in Pixelmator for iOS?

Yes, Pixelmator for iOS also has a Pixel Brush as part of the Paint tool. The interface is touch-based, but the functionality is similar. You can adjust brush size and opacity with sliders, and the brush is enabled by default when you select the Paint tool.

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