How to Convert Image to TIFF Using ImageMagick?

This article provides a quick, practical guide on how to use the ImageMagick convert command to transform various image file formats into TIFF format. You will learn the basic command structure, how to handle batch conversions, and how to apply specific compression methods to optimize your output files. Whether you are working with single images or large batches, these commands will help you streamline your image processing workflow directly from the terminal.

The Basic Convert Command

To convert a single image (such as a JPEG or PNG) into a TIFF file, you use the standard convert syntax by specifying the input file name followed by the desired output name with the .tiff (or .tif) extension. ImageMagick automatically detects the format from the file extension.

convert input.jpg output.tiff

Specifying TIFF Compression

TIFF files can become quite large if left uncompressed. To manage file sizes, you can specify a compression type using the -compress flag. Common compression options include LZW, Zip, and JPEG.

• LZW Compression (Lossless): Ideal for graphics and drawings.

convert input.png -compress LZW output.tiff

• Zip Compression (Lossless): Great for balancing file size and quality.

convert input.png -compress Zip output.tiff

• JPEG Compression (Lossy): Best for photographs where a smaller file size is prioritized over perfect quality.

convert input.jpg -compress JPEG output.tiff

Adjusting Image Resolution (DPI)

TIFF files are frequently used in printing, where dots per inch (DPI) matters. You can set the resolution using the -density flag and define the units with -units.

convert input.jpg -units PixelsPerInch -density 300 output.tiff

Batch Converting Multiple Images

If you have an entire directory of images that need to be converted to TIFF, you can utilize a simple shell loop in your terminal to process them all at once.

for img in *.png; do
    convert "$img" -compress LZW "${img%.png}.tiff"
done

This loop takes every PNG file in the current folder, applies lossless LZW compression, and saves it as a TIFF file with the original filename.