TIFF or Tagged Image File Format is a format to store high quality images. This format is easily recognizable by most programs. TIFF files are generally of high quality and a proportionally large size. Because of their large size, TIFF files are not compatible with most web browsers and cannot be viewed without plug-ins. Thus, there is a need to reduce TIFF size in order to share the file easily.
There are numerous compression formats that help reduce TIFF size. However, compressed TIFF images take a longer time to load. If you are not very particular about retaining the TIFF format, you can save the image by converting it into a smaller format like JPEG, PNG, GIF, etc. However changing the format reduces resolution.
The most popular method to reduce TIFF size is by LZW lossless compression. This method ensures that the quality of the file is not compromised during compression. The image content of the reduced file is identical to that of the uncompressed original. However, the compression program is chosen according to the image graphic character (gray scale, 48 bit, etc). Lossless compression ensures the file is protected from corrupting while reducing TIFF size. However, when compressing JPEG images using lossless compression, the result is not 100% identical to the original.
When you reduce TIFF size, similar strings in the data are identified and super imposed over one another to create a homogenous string, so that each string is categorically coded without creating any loss.
Certain precautions are necessary to bear in mind when you reduce TIFF size. When saving the file while working on it, do not use lossless compression as the compression products accumulate increasing the bulk size of the file. For the same reason, avoid compressing the file more than one time or the quality of the image will be affected.
However the large size of a TIFF file is owing to its high quality which basically means high details. A reduced TIFF size is thus desirable only when quality isnt a prime necessity like images required for web documents, sharing images via mail and read-only functions.