Image Filters

SVG is vector-based. This tool applies pixel filters to raster images (PNG, JPEG, WebP) using the canvas.

12 MB per image. Very large images may take a few seconds to process.

No. All filtering runs in your browser. Your image never leaves your device.

Apply one filter at a time and download. Then upload the result to apply another if needed.

Brightness shifts all pixel values linearly (add a constant). Exposure multiplies pixel values (a percentage increase). Exposure better mimics how cameras work — doubling exposure roughly doubles brightness while preserving tonal relationships.

Contrast expands or compresses the range of pixel values. Higher contrast makes darks darker and lights lighter, increasing separation between tones. Lower contrast flattens the image, making it look faded or muted.

Sepia converts an image to warm brown tones resembling old photographs. It first desaturates the image, then adds a yellowish-brown color shift (boosting red and green channels slightly, reducing blue). The historical sepia tone came from silver sulfide toning in darkroom photography.

Blur applies a Gaussian or box blur using convolution — each pixel is replaced with a weighted average of its neighbors. Higher blur radius means larger neighborhoods and more blending. Blur reduces sharpness and visual noise.

Sharpening (unsharp mask) enhances edges by increasing local contrast. It is not the reverse of blur — it cannot recover information lost by blurring. Sharpening applied to already-sharp images creates halos and artifacts.

An invert filter replaces each pixel value with its complement: new_value = 255 − old_value. R, G, and B are each inverted independently. This creates a photographic negative effect and is useful for checking image masks or creating artistic effects.

CSS filters (filter: brightness(1.5) contrast(1.2)) are applied by the GPU and do not modify pixel data — they only affect display. Canvas pixel manipulation actually changes the pixel values, producing a downloadable result. Both produce visually similar effects.