Animation becomes a still
Still image output. Animated files use only the first frame; animation is not preserved.
Convert WebP to PGM
- In your browser
- No upload
- Private by design
What happens when you convert WebP to PGM?
Grayscale output
Colour is converted to grayscale using linear-sRGB luminance and the sRGB transfer curve. Colour channels and transparency are not retained.
Opaque output
Transparency is replaced with white by default. Change the background in Advanced options.
Lossless sample storage
Netpbm stores these samples without compression. Reducing colour, thresholding or changing maxval can still lose information before storage; text and binary representations change the layout, not its image meaning. PGM can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
WebP
Source
WebP
WebP
Compression: Lossy & losslessTransparency: YesMetadata: Exif, XMP, ICC
A web image format combining lossy and lossless compression, transparency and animation in a RIFF container.
Explore WebP format →PGM
Target
PGM
Portable Graymap
Compression: UncompressedTransparency: NoMetadata: Header, Comments
Portable Graymap: simple uncompressed raster samples for image-processing pipelines.
Explore PGM format →Is WebP → PGM right for you?
Good choice when
- PGM fits your delivery use: Grayscale images & masks.
- You want a still illustration from an animated source.
- Your processing pipeline explicitly needs grayscale samples.
- An opaque image is acceptable for your destination.
Probably not when
- Motion, frame timing or loop behaviour must survive.
- Colour distinctions carry information you need to retain.
- You need cutouts or translucent edges for compositing.
- You expect lossless encoding to restore lost details or editing structure.
WebP to PGM conversion details
- Animation becomes a still
- Still image output. Animated files use only the first frame; animation is not preserved.
- Grayscale output
- Colour is converted to grayscale using linear-sRGB luminance and the sRGB transfer curve. Colour channels and transparency are not retained.
- Opaque output
- Transparency is replaced with white by default. Change the background in Advanced options.
- Lossless sample storage
- Netpbm stores these samples without compression. Reducing colour, thresholding or changing maxval can still lose information before storage; text and binary representations change the layout, not its image meaning. PGM can store its supported image samples without lossy compression. This applies after rendering and sample conversion: it does not guarantee preservation of source precision, colour space or document structure, and cannot undo earlier losses.
- Sample precision & colour
- Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
- Metadata & colour
- Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
- Compression
- WebP: Lossy & lossless → PGM: Uncompressed WebP: Lossy VP8 and lossless VP8L are different coding modes. Lossless WebP preserves supported 8-bit samples, not higher-precision source values. Encoding options can also change RGB values under fully transparent pixels. PGM: Netpbm stores these samples without compression. Reducing colour, thresholding or changing maxval can still lose information before storage; text and binary representations change the layout, not its image meaning.
- Transparency
- Transparency is replaced with white by default. Change the background in Advanced options.
- Animation
- Still image output. Animated files use only the first frame; animation is not preserved.
- Colour depth
- WebP: 8 bits/sample → PGM: maxval up to 65535
- Dimensions
- Rendered image dimensions are retained within the converter limits; this tool does not offer resizing. Orientation handling depends on the source decoder.
- Metadata
- Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Common questions
Will the output keep animation?
Still image output. Animated files use only the first frame; animation is not preserved.
Will PGM keep the source colours?
Colour is converted to grayscale using linear-sRGB luminance and the sRGB transfer curve. Colour channels and transparency are not retained.
What happens to transparent areas?
Transparency is replaced with white by default. Change the background in Advanced options.
Are bit depth and colour values guaranteed to match?
Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Will metadata and colour profiles be retained?
Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.