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Apply low pass filter to smooth images and reduce noise with adjustable blur algorithms
Execution
Fill in the form, run the tool, and review the result in one place.
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Tool usage guide
The Low Pass Filter tool allows you to smooth images and effectively reduce digital noise by applying customizable blur algorithms. Whether you need to soften textures, remove high-frequency artifacts, or create artistic blur effects, this utility provides precise control over the smoothing process.
Background
A photo taken at night has significant digital grain due to high ISO settings.
Problem
The image looks grainy and lacks professional clarity.
How to use
Upload the JPEG, select 'Gaussian Blur', set the radius to 1.2, and process the image.
algorithm: gaussian, radius: 1.2, strength: 0.4Outcome
The image grain is smoothed out, resulting in a cleaner, more professional-looking photograph.
Background
A sharp, high-resolution background image is distracting from the foreground text.
Problem
The background needs to be softer to improve readability of the overlay text.
How to use
Upload the image, select 'Surface Blur' to maintain some structure, and increase the radius.
algorithm: surface, radius: 5.0, preserveEdges: trueGaussian Blur is the standard choice for general smoothing. Use Surface Blur if you want to smooth flat areas while preserving sharp edges.
No, this tool is designed to process one image file at a time.
Increasing the number of iterations applies the filter multiple times, resulting in a significantly smoother and more pronounced effect.
Yes, if you upload a PNG or WebP file with transparency, the tool will maintain the alpha channel in the output.
You can upload image files up to 20MB in size.
Outcome
The background is effectively softened while retaining the main shapes, making the text much easier to read.