Multiple source images
One page is converted (default: page 1). Choose another page in Advanced options.
Convert TIFF to PGM
- In your browser
- No upload
- Private by design
What happens when you convert TIFF 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.
HDR to SDR
HDR is rendered to SDR using exposure and Reinhard tone mapping.
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.
TIFF
Source
TIFF
Tagged Image File Format
Compression: Depends on variantTransparency: YesMetadata: TIFF tags, Exif, ICC
Tagged raster storage for scanning and image interchange. Compression, sample types and image count depend on the TIFF variant.
Explore TIFF 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 TIFF → PGM right for you?
Good choice when
- PGM fits your delivery use: Grayscale images & masks.
- You can choose the source image or part needed for delivery.
- Your processing pipeline explicitly needs grayscale samples.
- You need an SDR delivery copy and can review its tone mapping.
Probably not when
- You require a complete collection, page set or multipart round trip.
- Colour distinctions carry information you need to retain.
- You need the original HDR range for relighting or grading.
- You need cutouts or translucent edges for compositing.
TIFF to PGM conversion details
- Multiple source images
- One page is converted (default: page 1). Choose another page in Advanced options.
- Grayscale output
- Colour is converted to grayscale using linear-sRGB luminance and the sRGB transfer curve. Colour channels and transparency are not retained.
- HDR to SDR
- HDR is rendered to SDR using exposure and Reinhard tone mapping.
- 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
- TIFF: Depends on variant → PGM: Uncompressed TIFF: TIFF is not intrinsically lossless or uncompressed. Read the Compression, BitsPerSample and SampleFormat tags; decoder support varies across schemes. 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.
- Colour depth
- TIFF: Tagged sample types → PGM: maxval up to 65535
- Multiple images
- TIFF: Image directories
- Dimensions
- One page is converted (default: page 1). Choose another page in Advanced options.
- Metadata
- Pixel conversion only. Original EXIF, GPS, XMP and ICC profiles are not copied; processing uses 8-bit display pixels.
Common questions
Will every source image be exported?
One page is converted (default: page 1). Choose another page in Advanced options.
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.
How will HDR brightness be mapped?
HDR is rendered to SDR using exposure and Reinhard tone mapping.
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.