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Grayscale Image Converter

Image

Convert the whole image to grayscale with weighted RGB luma and a live preview.

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Choose an image or try Examples to start.

Convert the whole image to grayscale with weighted RGB luma.

Original

Your source image

Source dimensions and file size

Grayscale

Your result appears here

Output dimensions and file size

JPEG inputs export as JPEG at quality 90%. Other formats export as PNG with transparency preserved. File size may increase. Dimensions stay the same.

GIF uses its first frame. SVG is rasterized. Images are processed in your browser.

Convert the whole image to grayscale using 0.299 red + 0.587 green + 0.114 blue. Upload an image or choose Examples to see the result automatically.

See more about the Grayscale Image Converter

The original dimensions and transparency are preserved. JPEG inputs download as JPEG at 90% quality. PNG, WebP, GIF and SVG inputs download as PNG. GIF uses its first frame and SVG is rasterized. Dimensions stay the same, and file size may increase. Download current image saves the encoded preview. Files must be no larger than 20 MiB, 8192 pixels per side and 16 megapixels.

Key features

  • Automatic preview
  • Original dimensions
  • Transparency preserved
  • Local image processing

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Quick answers for Grayscale Image Converter

How do I convert an image to grayscale?
Upload an image or choose Examples. The preview updates automatically without an Apply button. Every RGB channel receives the same weighted luma value: 0.299 red + 0.587 green + 0.114 blue. Alpha is unchanged. This is a full grayscale conversion, with no intensity slider.
What files and download formats are supported?
Upload PNG, JPEG, WebP, GIF or SVG up to 20 MiB, 8192 pixels per side and 16 megapixels. JPEG downloads use JPEG at 90% quality; other inputs download as PNG. Transparency and dimensions are preserved. GIF uses its first frame, and SVG is rasterized.
How do I save or reset the result?
Download current image saves the encoded preview. It’s disabled while a new preview is processing. Clear removes the image and cancels pending work. File sizes are shown in exact bytes; the result may be larger than the source.