WebToolArcBrowser-local limits
Canvas-based export is browser dependent. PNG is broadly available; JPEG/WebP quality and support can vary, and metadata may not be preserved through canvas re-encoding.
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Image Tools
Grayscale Image
Choose an image, control grayscale strength, preview it, and export a local copy.
Choose an imageProcessed locally with browser Canvas.
Core image workflows
Use a flagship page for the highest-demand resize, compression, crop and conversion jobs; specialist image tools remain available from the full hub.
Image ResizerResize by pixels or percentageImage CompressorReduce file size with controlsImage CropperCrop visually or by coordinatesImage ConverterConvert JPG, PNG and WebPJPG to PNGConvert JPEG into PNGPNG to JPGExport PNG as JPEGHEIC to JPGConvert phone HEIC/HEIF photosWebP to JPGExport WebP as JPEG
Grayscale strength & tonal-intent planner
Make the grayscale slider an explicit color-removal decision. Distinguish partial desaturation from full grayscale and record output-format/quality effects without pretending grayscale is the same as thresholded black-and-white.
—Grayscale strength
—Color retained
—Output format
—Alpha handling
Ready.
| Check | Current setting | Meaning | Review |
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Grayscale removes color information progressively; it does not guarantee accessible contrast or a two-color bilevel image.