Apply Gaussian Blur Filter Online

Gaussian blur is the most widely used blur filter in digital image editing. Unlike simple box blur, Gaussian blur produces a smooth, natural-looking softness that mimics the optical defocus of a camera lens — hence its popularity in photo editing, graphic design, and UI design.

This tool gives you full control over the blur radius from 1px (very subtle softening) to 20px (heavy blur that obscures most detail). The blur is applied using the browser's native canvas filter API for smooth, high-quality results.

Use cases include: softening harsh edges in composite images, creating frosted-glass background textures for UI mockups, reducing noise in low-light photos, generating soft-focus artistic effects, and creating blurred placeholder images (LQIP) for web performance optimisation.