dwebp

decode WebP images to other formats

TLDR

Convert WebP to PNG

$ dwebp [image.webp] -o [output.png]

Convert to PPM

$ dwebp [image.webp] -ppm -o [output.ppm]

Convert to BMP

$ dwebp [image.webp] -bmp -o [output.bmp]

Show image info only

$ dwebp -info [image.webp]

Resize while decoding (0 keeps the aspect ratio)

$ dwebp [image.webp] -resize [800] [0] -o [output.png]

Crop a rectangle out of the image

$ dwebp [image.webp] -crop [x] [y] [width] [height] -o [output.png]

Flip image vertically

$ dwebp -flip [image.webp] -o [output.png]

SYNOPSIS

dwebp [options] input.webp -o output

dwebp decodes WebP images to other formats. It's part of the libwebp package providing reference implementations for WebP encoding and decoding.The tool supports both lossy and lossless WebP images, including those with alpha transparency. Output format defaults to PNG unless specified otherwise.dwebp is useful for converting WebP images from web sources to formats compatible with tools that don't support WebP natively.

PARAMETERS

INPUT

WebP file to decode.

-o FILE

Output file path.

-ppm

Output PPM format.

-bmp

Output BMP format.

-tiff

Output TIFF format.

-pgm

Output PGM format (grayscale).

-pam

Output PAM format (preserves the alpha channel).

-alpha

Output only the alpha plane as a grayscale image.

-info

Print image info only.

-flip

Flip image vertically.

-crop x y w h

Decode only the given rectangle of the image.

-resize width height (or -scale)

Rescale the decoded image. A value of 0 for one dimension preserves the aspect ratio.

-nofancy

Disable fancy (higher quality) upsampling.

-nodither

Disable dithering.

-mt

Use multi-threading for decoding.

-quiet

Suppress informational output.

-v

Print decoding time.

-version

Print the library version and exit.

-h

Display help information.

INSTALL

sudo apt install webp

sudo dnf install libwebp-tools

sudo apk add libwebp-tools

sudo zypper install libwebp-tools

brew install webp

CAVEATS

The output file extension does not select the format; use the format flags. Animated WebP files are not handled by dwebp, only their first frame or nothing at all: use anim_dump or webpmux for animations. PNG output is the default and requires libpng at build time.

HISTORY

dwebp is part of libwebp, Google's reference implementation of the WebP image format. WebP was introduced by Google in 2010 as an efficient image format for web use.

RESOURCES

Source code · Homepage · Documentation