How to make an image transparent?

Select your file and lower the opacity scale to reduce the image alpha before exporting.

What does Opacity Scale change?

It multiplies the alpha channel by a scalar, making the whole image more or less transparent.

Does Opacity Scale remove the background?

No. It changes the transparency of the full image. Use a cut-out tool when you need to remove a subject background.

What file formats can I export?

You can export as PNG, JPEG, WebP, TIFF, BMP, or HEIC.

Is this tool free to use?

Yes — completely free, no account needed. Your images are processed entirely in your browser and never uploaded to a server. Downloads have no watermarks.

← Online Image Framing & Border Tools

Scale Image Opacity Online

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What you can expect

Applies a scalar to the alpha component of your image making your image transparent to that scale.

Related tools

More BrushCue tools that fit this workflow.

See all tools →

Add Frame

Add a solid-color frame around an image without cropping or scaling it. Choose the frame color and set its thickness in pixels.

Color Rectangle

Create a solid color image by specifying the color and dimensions. Ideal for testing palettes, layout placeholders, and visual design work.

Circle Crop

Crop an image into a perfect circle with transparent corners. Slide the crop along the image’s longer side to position the subject for a profile picture, avatar, or logo.

Cut Out Person

Upload your photo and receive an image with the person cut out and a transparent background. Use this tool to create stickers or overlays of people.

Fit Image to Canvas

Fit your whole photo into a square, widescreen, or portrait canvas without cropping or stretching the foreground. Fill the surrounding space with a blurred copy and adjust background brightness and foreground scale privately in your browser.

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Online Image Framing & Border Tools

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Online Image Utility Tools

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Frequently asked questions

How to make an image transparent?: Select your file and lower the opacity scale to reduce the image alpha before exporting.
What does Opacity Scale change?: It multiplies the alpha channel by a scalar, making the whole image more or less transparent.
Does Opacity Scale remove the background?: No. It changes the transparency of the full image. Use a cut-out tool when you need to remove a subject background.
What file formats can I export?: You can export as PNG, JPEG, WebP, TIFF, BMP, or HEIC.
Is this tool free to use?: Yes — completely free, no account needed. Your images are processed entirely in your browser and never uploaded to a server. Downloads have no watermarks.

For developers

Use Opacity Scale from Python

Open the Jupyter notebook example to see how to run this tool from the BrushCue Python API, inspect the processing steps, and adapt the workflow for scripts or batch image jobs.

View Python notebook

Build your own

Create projects with your custom presets

Save work, organize projects, and keep your favorite tool setups ready to go. No login required — everything is stored privately on your computer.

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