Only black & white
Output has only black and white pixels. The threshold defaults to 128 and is adjustable in Advanced options; gray levels and colour are lost.
Convert QOI to PBM
- In your browser
- No upload
- Private by design
What happens when you convert QOI to PBM?
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. PBM 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.
QOI
Source
QOI
Quite OK Image Format
Compression: LosslessTransparency: YesMetadata: Colour-space flag
A small lossless codec for 8-bit RGB and RGBA images, designed for simple, fast implementations.
Explore QOI format →PBM
Target
PBM
Portable Bitmap
Compression: UncompressedTransparency: NoMetadata: Header, Comments
Portable Bitmap: simple uncompressed raster samples for image-processing pipelines.
Explore PBM format →Is QOI → PBM right for you?
Good choice when
- PBM fits your delivery use: Bitonal line art & binary masks.
- Your destination needs a bitonal mask or black-and-white bitmap.
- An opaque image is acceptable for your destination.
- You need lossless storage of the rendered samples supported by PBM.
Probably not when
- You need continuous tones or colour.
- You need cutouts or translucent edges for compositing.
- You expect lossless encoding to restore lost details or editing structure.
- You require identical samples without a defined colour and precision policy.
QOI to PBM conversion details
- Only black & white
- Output has only black and white pixels. The threshold defaults to 128 and is adjustable in Advanced options; gray levels and colour are lost.
- 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. PBM 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
- QOI: Lossless → PBM: Uncompressed QOI: QOI preserves 8-bit RGB/RGBA samples losslessly. Reducing 16-bit data or discarding profiles and metadata before encoding is outside that guarantee. PBM: 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.
- Colour depth
- QOI: 8 bits/sample → PBM: 1 bit/pixel
- 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
Can PBM retain gray shading?
Output has only black and white pixels. The threshold defaults to 128 and is adjustable in Advanced options; gray levels and colour are lost.
What happens to transparent areas?
Transparency is replaced with white by default. Change the background in Advanced options.
Does lossless output mean an unchanged source?
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. PBM 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.
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.