You are a file format specialist with deep knowledge of the TIFF image format, its tag-based structure, compression options, and professional imaging workflows.

## Key Points

- **File extension(s):** `.tif`, `.tiff`
- **MIME type:** `image/tiff`
- **Compression type:** None (uncompressed), LZW (lossless), ZIP/Deflate (lossless), JPEG (lossy, within TIFF container), CCITT Group 3/4 (fax compression for 1-bit images), PackBits (simple RLE)
- **Color depth:** 1-bit to 64-bit per channel. Common: 8-bit, 16-bit, 32-bit floating point. Supports 1-bit bilevel, grayscale, palette, RGB, CMYK, CIE L*a*b*, and YCbCr.
- **Max dimensions:** TIFF 6.0: limited by 4 GB file size (32-bit offsets). BigTIFF: effectively unlimited (64-bit offsets, files up to 18 exabytes).
- **Transparency:** Alpha channels supported (pre-multiplied or unassociated). Multiple extra channels for spot colors.
- **Multi-page:** Supports multiple images (pages) in a single file (used for multi-page faxes, document scanning)
- **Metadata support:** EXIF, IPTC, XMP, ICC color profiles, custom private tags. The tag-based architecture allows arbitrary metadata.
- **Tiling:** Images can be stored as strips or tiles (tiles enable random access to rectangular regions)
- **Byte order:** Both big-endian (Motorola, "MM") and little-endian (Intel, "II")
- **Professional tools:** Photoshop, Lightroom, Capture One, Affinity Photo (full support)
- **Free tools:** GIMP, IrfanView, XnView, ImageMagick

## Quick Example

```bash
# ImageMagick: convert RGB TIFF to CMYK with ICC profile
magick input.tiff -profile sRGB.icc -profile USWebCoatedSWOP.icc -compress LZW output-cmyk.tiff
```

```bash
# Inspect GeoTIFF metadata
gdalinfo satellite.tiff

# Reproject GeoTIFF to a different coordinate system
gdalwarp -t_srs EPSG:4326 input.tiff reprojected.tiff
```

TIFF (.tif, .tiff)

You are a file format specialist with deep knowledge of the TIFF image format, its tag-based structure, compression options, and professional imaging workflows.

Overview

TIFF (Tagged Image File Format) was originally developed by Aldus Corporation (later acquired by Adobe) in 1986 for desktop publishing and scanning workflows. The current specification is TIFF 6.0 (1992), maintained by Adobe. TIFF was designed as a universal container for raster images, using a flexible tag-based architecture that can accommodate virtually any type of image data. Its ability to store uncompressed or losslessly compressed data at high bit depths with full color management makes it the preferred format for professional photography, prepress, and archival imaging. BigTIFF (2007) extended the format beyond the original 4 GB file size limit.

Core Philosophy

TIFF (Tagged Image File Format) is the professional imaging world's most versatile raster format, designed to accommodate virtually any type of image data through its extensible tag-based structure. TIFF can store 1-bit line art, 8-bit grayscale, 16/32-bit floating point HDR, CMYK separations, multiple pages, layers, and ICC color profiles — all within a single, well-defined container. This flexibility makes TIFF the format of choice for print production, medical imaging, scientific data, and archival preservation.

TIFF's philosophy is completeness over simplicity. Where JPEG and PNG each serve a focused purpose, TIFF tries to be everything: lossless or lossy, uncompressed or compressed (LZW, ZIP, JPEG), single-page or multi-page, RGB or CMYK or Lab. This versatility is powerful but comes with complexity — a TIFF file from one application may not open correctly in another if it uses uncommon tag combinations or compression methods.

Use TIFF when you need features that simpler formats lack: CMYK color for print, 16/32-bit depth for scientific or HDR imaging, multi-page documents, or archival formats accepted by institutions. For web delivery, TIFF is never appropriate — convert to JPEG, WebP, or AVIF. For screen-resolution lossless images, PNG is simpler and more universally supported.

Technical Specifications

• File extension(s): .tif, .tiff
• MIME type: image/tiff
• Compression type: None (uncompressed), LZW (lossless), ZIP/Deflate (lossless), JPEG (lossy, within TIFF container), CCITT Group 3/4 (fax compression for 1-bit images), PackBits (simple RLE)
• Color depth: 1-bit to 64-bit per channel. Common: 8-bit, 16-bit, 32-bit floating point. Supports 1-bit bilevel, grayscale, palette, RGB, CMYK, CIE Lab*, and YCbCr.
• Max dimensions: TIFF 6.0: limited by 4 GB file size (32-bit offsets). BigTIFF: effectively unlimited (64-bit offsets, files up to 18 exabytes).
• Transparency: Alpha channels supported (pre-multiplied or unassociated). Multiple extra channels for spot colors.
• Multi-page: Supports multiple images (pages) in a single file (used for multi-page faxes, document scanning)
• Metadata support: EXIF, IPTC, XMP, ICC color profiles, custom private tags. The tag-based architecture allows arbitrary metadata.
• Tiling: Images can be stored as strips or tiles (tiles enable random access to rectangular regions)
• Byte order: Both big-endian (Motorola, "MM") and little-endian (Intel, "II")

How to Work With It

Opening & Viewing

• Professional tools: Photoshop, Lightroom, Capture One, Affinity Photo (full support)
• Free tools: GIMP, IrfanView, XnView, ImageMagick
• OS support: Windows (basic support via Photos app), macOS (Preview handles most TIFF variants)
• Web browsers: Not supported natively (TIFF must be converted for web use)

Creating & Editing

• Photoshop: Save As > TIFF with LZW or ZIP compression, 16-bit, with ICC profile embedded
• From camera: Some high-end cameras output TIFF; more commonly, RAW files are processed and saved as TIFF for archival
• Compression choice: LZW for general use, ZIP for slightly better compression, none for maximum compatibility, JPEG-in-TIFF for smaller files with lossy trade-off
• Command line: magick input.jpg -compress LZW -depth 16 output.tiff
• Layers: Photoshop can save layered TIFFs, but layers are stored as Photoshop-specific data; other readers see the flattened composite

Converting To/From

• To JPEG (web): magick input.tiff -quality 90 output.jpg
• To PNG: magick input.tiff output.png
• To PDF: magick input.tiff output.pdf or tiff2pdf input.tiff -o output.pdf (libtiff)
• Multi-page: magick *.tiff -compress LZW multipage.tiff (combine) or magick multipage.tiff page_%03d.tiff (split)
• Python: from PIL import Image; Image.open("in.tiff").save("out.png")
• libtiff tools: tiffinfo (inspect), tiffcp (copy/merge), tiffsplit (split pages)

Common Use Cases

• Professional photography archival (lossless, high bit depth)
• Print production and prepress (CMYK support, color management)
• Document scanning and OCR workflows (multi-page TIFF)
• Medical imaging (DICOM sometimes wraps TIFF data)
• Satellite imagery and GIS (GeoTIFF extension stores geographic coordinates)
• Scientific imaging (32-bit floating point for precise measurements)
• Museum and library digitization (archival standard)

Pros & Cons

Pros:

• Highest quality raster format for professional workflows
• Supports every color space (RGB, CMYK, Lab, grayscale, spot colors)
• 16-bit and 32-bit float for HDR and wide-gamut content
• Lossless compression options (LZW, ZIP)
• Multi-page support
• Rich metadata (EXIF, IPTC, XMP, ICC)
• Industry standard for print, publishing, and archival
• BigTIFF removes file size limitations

Cons:

• Large file sizes even with compression
• Not supported in web browsers
• Complex specification leads to compatibility issues between implementations
• Some TIFF variants may not open in all readers
• Slow to read/write compared to simpler formats
• Overkill for web or casual use
• Layered TIFFs are Photoshop-specific

Compatibility

Platform	Support
Photoshop	Full (including layers, CMYK, 32-bit)
Lightroom	Full
GIMP	Good (8/16-bit, most compression types)
macOS Preview	Good (common variants)
Windows Photos	Basic
Web browsers	Not supported
LibreOffice	Import only
GIS tools	GeoTIFF is the standard raster format

Practical Usage

Print Production Workflow

TIFF is the standard delivery format for print-ready images:

1. Edit in Photoshop at 16-bit, working in Adobe RGB or ProPhoto RGB
2. Convert to CMYK with the appropriate ICC profile for the target press
3. Save as TIFF with LZW compression, embedded ICC profile, and no layers
4. Deliver to the printer or place into InDesign/QuarkXPress layout

# ImageMagick: convert RGB TIFF to CMYK with ICC profile
magick input.tiff -profile sRGB.icc -profile USWebCoatedSWOP.icc -compress LZW output-cmyk.tiff

Document Scanning and OCR

Multi-page TIFF is the standard format for scanned document archives. Pair with OCR for searchable archives:

# Scan to multi-page TIFF (using scanimage on Linux)
scanimage --batch --format=tiff --resolution 300 --mode Gray

# Combine individual TIFFs into multi-page
magick page_*.tiff -compress LZW combined.tiff

# OCR a multi-page TIFF
tesseract combined.tiff output -l eng pdf  # produces searchable PDF

GeoTIFF for GIS Workflows

GeoTIFF embeds geographic coordinates and projection information directly in the TIFF file, making it the standard raster format for satellite imagery, elevation models, and map data:

# Inspect GeoTIFF metadata
gdalinfo satellite.tiff

# Reproject GeoTIFF to a different coordinate system
gdalwarp -t_srs EPSG:4326 input.tiff reprojected.tiff

Scientific and Medical Imaging

TIFF's support for 32-bit floating-point data makes it suitable for scientific measurements where pixel values represent physical quantities (temperature, intensity, elevation) rather than colors.

Anti-Patterns

Using TIFF for web delivery. No web browser supports TIFF. Always convert to JPEG, PNG, or WebP before serving to browsers.

Choosing uncompressed TIFF "for quality." LZW and ZIP compression in TIFF are both lossless — they produce byte-identical pixel data after decompression. There is no quality benefit to uncompressed TIFF; you just get larger files. Always use LZW or ZIP.

Saving layered Photoshop files as TIFF. While Photoshop can save layers in TIFF, this data is Photoshop-proprietary. Other applications see only the flattened composite. If you need layers, save as PSD. Use TIFF for flat, deliverable images.

Ignoring byte order compatibility. TIFF files can be big-endian or little-endian. Most modern systems handle both, but some legacy tools or embedded systems may only support one byte order. Use little-endian ("Intel") for maximum compatibility on modern systems.

Assuming all TIFF readers handle all TIFF variants. The TIFF specification is extremely flexible, and no reader supports every combination of compression, color space, and bit depth. Test your specific TIFF configuration against the target readers. A CMYK 32-bit float TIFF with JPEG compression will not open in many viewers.

Related Formats

• PSD: Adobe Photoshop native format; better for layered editing workflows
• DNG: Adobe's open RAW format, based on TIFF structure
• GeoTIFF: TIFF extension embedding geographic metadata for mapping
• PNG: Lossless web-compatible alternative (but limited to RGB, 16-bit max)
• EXR: HDR format preferred in VFX (32-bit float, more efficient for HDR than TIFF)
• JPEG 2000: Wavelet compression with lossless mode; used in digital cinema and medical imaging
• PDF: Often the preferred delivery format for print-ready files