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Duotone Image
Map light and dark areas onto two colors.
A smarter way to work with images
63 free image tools to resize, retouch, convert and create, processed on your device.
Optimize & resize
Compress ImageReduce image size with quality and resize controls, entirely in your browser.Browser-basedOpen toolImage Size ReducerTry to bring a photo under a chosen KB limit.Browser-basedOpen toolResize ImageResize to fit a width and height without stretching.Browser-basedOpen toolCrop ImageCrop a precise rectangle using pixel coordinates.Browser-basedOpen toolAdd Image PaddingAdd space around an image without stretching it.Browser-basedOpen toolAspect Ratio CropCenter-crop to square, portrait or widescreen proportions.Browser-basedOpen toolSplit Image into TilesSplit one image into a downloadable ZIP of PNG tiles.Browser-basedOpen toolUpscale ImageEnlarge an image with smooth pixel interpolation.Browser-basedOpen tool
Edit & transform
Photo EditorCrop, rotate, flip and filter a photo in one export.Browser-basedOpen toolAdjust PhotoCombine brightness, contrast, saturation and gamma adjustments.Browser-basedOpen toolRotate ImageRotate a photo by 90, 180 or 270 degrees.Browser-basedOpen toolFlip ImageMirror an image horizontally or vertically.Browser-basedOpen toolTilt ImageApply horizontal perspective and vertical shear to a photo.Browser-basedOpen toolCircle Image CropCreate a circular photo with transparent corners.Browser-basedOpen toolRound Image CornersSoften the corners of an image.Browser-basedOpen toolAdd Image BorderFrame your image with a solid border.Browser-basedOpen tool
Retouch
Remove Solid Color BackgroundMake a selected background color transparent.Browser-basedOpen toolObject Remover (Manual)Fill a selected rectangle using nearby edge colors.Browser-basedOpen toolBlur Face (Manual Box)Blur a face or region inside a rectangle you choose.Browser-basedOpen toolReplace Image ColorReplace pixels close to a chosen color.Browser-basedOpen toolEnhance ImageImprove tonal contrast with automatic level adjustment.Browser-basedOpen toolSharpen ImageEmphasise edges with unsharp masking.Browser-basedOpen toolReduce Image NoiseReduce isolated pixel noise with a median filter.Browser-basedOpen toolBlur ImageApply a uniform box blur to an image.Browser-basedOpen tool
Adjust colors
Adjust Image BrightnessLighten or darken an image with a controlled offset.Browser-basedOpen toolAdjust Image ContrastIncrease or reduce contrast around middle gray.Browser-basedOpen toolAdjust Image SaturationMake image colors stronger or more muted.Browser-basedOpen toolAdjust Image ExposureChange exposure in approximate stops.Browser-basedOpen toolGamma CorrectionAdjust midtones with a gamma curve.Browser-basedOpen toolAdjust Image WarmthShift a photo toward warm or cool tones.Browser-basedOpen toolRGB Color BalanceAdjust red, green and blue channels independently.Browser-basedOpen toolChange Image OpacityMake an image more transparent.Browser-basedOpen tool
Filters & effects
Image to GrayscaleTurn a photo into a grayscale image.Browser-basedOpen toolSepia ImageGive a photo a warm sepia treatment.Browser-basedOpen toolInvert Image ColorsCreate a photographic negative of your image.Browser-basedOpen toolBlack and White ThresholdTurn an image into strictly black and white pixels.Browser-basedOpen toolPixelate ImageReplace small details with blocks of averaged color.Browser-basedOpen toolPosterize ImageReduce each color channel to a small number of levels.Browser-basedOpen toolSolarize ImageInvert color values above a threshold.Browser-basedOpen toolDuotone ImageMap light and dark areas onto two colors.Browser-basedOpen toolAdd Image VignetteDarken image edges around the center.Browser-basedOpen tool
Create
Image Collage MakerArrange photos in a grid with consistent cells.Browser-basedOpen toolPhoto Contact SheetCreate a labeled overview of a set of photos.Browser-basedOpen toolMeme GeneratorAdd top and bottom captions to an uploaded photo.Browser-basedOpen toolAdd Text to ImagePlace a caption or label on your image.Browser-basedOpen toolText Watermark ImagePlace a repeated text watermark across an image.Browser-basedOpen toolLogo Watermark ImageAdd your own logo to a photo.Browser-basedOpen toolAnimated GIF MakerTurn a sequence of images into a looping animated GIF.Browser-basedOpen tool
Convert
Image ConverterConvert a JPG, PNG or WebP using your chosen export format.Browser-basedOpen toolConvert Image to JPGConvert PNG, WebP or JPG into a JPG image.Browser-basedOpen toolConvert Image to PNGConvert a JPG or WebP into a PNG image.Browser-basedOpen toolConvert Image to WebPConvert JPG or PNG into a WebP image.Browser-basedOpen toolConvert Image to BMPCreate a 24-bit BMP bitmap from your image.Browser-basedOpen tool
Icons & app assets
Favicon Package GeneratorCreate PNG icons, an ICO file and a web manifest.Browser-basedOpen toolAndroid & PWA Icon GeneratorExport launcher PNG sizes and PWA icons in a ZIP.Browser-basedOpen tooliOS Image Set GeneratorGenerate @1x, @2x and @3x images with Contents.json.Browser-basedOpen toolAndroid Drawable SetGenerate density-specific drawable or mipmap PNG resources.Browser-basedOpen tool
Color & info
Image Color ReaderMeasure average RGBA and color distribution in a region.Browser-basedOpen toolPick Image Pixel ColorRead a pixel color by its image coordinates.Browser-basedOpen toolExtract Image Color PaletteFind frequently occurring colors in your image.Browser-basedOpen toolImage InformationRead pixel dimensions, aspect ratio and file size.Browser-basedOpen toolImage Metadata ViewerInspect common JPEG EXIF fields and image properties.Browser-basedOpen toolRe-encode Without Original MetadataExport pixels without copying original EXIF metadata.Browser-basedOpen tool
How to use Duotone Image
- Select a JPG, PNG or WebP image.
- Choose the duotone image settings and export options.
- Run the tool, review the result and download it.
What this tool does
Maps luminance between your shadow and highlight colors while preserving alpha.
Supported files, limits & important details
Browser-local processing. 20 MB and 20 million pixels per input; combined inputs up to 40 million pixels. Output up to 8000 pixels per side, 20 million pixels and 80 MB. Animated images use a single frame. Original metadata is not copied. JPG flattens transparency onto white. Browser codec support varies. Maps luminance between your shadow and highlight colors while preserving alpha.
Input limits are enforced before processing. Clear removes your input and result from this page. This tool does not store your input between visits.
Keep your workflow moving
Questions about Duotone Image
How do I use Duotone Image?
Select a JPG, PNG or WebP image. Choose the duotone image settings and export options. Run the tool, review the result and download it.
Are files or text uploaded when I use Duotone Image?
No. Duotone Image processes your input in your browser. The tool does not upload your document or text for processing. Keep your original and review the result.
What should I check before relying on Duotone Image?
Maps luminance between your shadow and highlight colors while preserving alpha.
Need help choosing a workflow? Read our practical PDF and file guides. How your data is handled.
All image tools
Optimize & resize
- Compress Image
- Image Size Reducer
- Resize Image
- Crop Image
- Add Image Padding
- Aspect Ratio Crop
- Split Image into Tiles
- Upscale Image
Edit & transform
- Photo Editor
- Adjust Photo
- Rotate Image
- Flip Image
- Tilt Image
- Circle Image Crop
- Round Image Corners
- Add Image Border
Retouch
- Remove Solid Color Background
- Object Remover (Manual)
- Blur Face (Manual Box)
- Replace Image Color
- Enhance Image
- Sharpen Image
- Reduce Image Noise
- Blur Image
Adjust colors
- Adjust Image Brightness
- Adjust Image Contrast
- Adjust Image Saturation
- Adjust Image Exposure
- Gamma Correction
- Adjust Image Warmth
- RGB Color Balance
- Change Image Opacity
Filters & effects
- Image to Grayscale
- Sepia Image
- Invert Image Colors
- Black and White Threshold
- Pixelate Image
- Posterize Image
- Solarize Image
- Duotone Image
- Add Image Vignette
Create
- Image Collage Maker
- Photo Contact Sheet
- Meme Generator
- Add Text to Image
- Text Watermark Image
- Logo Watermark Image
- Animated GIF Maker