troubleshooting Question

I Have Two Questions Regarding The Comparison Of An Original Image File Format To The Resulting Decompressed Image File Format In Terms Of Image Quality Resolution And Image File Size?

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BazingerooFlag for Afghanistan asked on
Photos / Graphics SoftwareImages and PhotosWindows 7
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Hello. I have a question to ask. This applies to programs applicable to my Windows 7 64-bit operating system.

For years, like all of us, I have used programs that allow you can compress (package) and decompress (unpackage) specific file format types (example: popular image file formats like raster formats such as JPG, TIF, PNG, GIF, BMP, RAW) using various file compression utility programs like WinZip, WinRAR, and 7-zip to name a few.

Questions – please answer both:

1. If I compress a popular raster image file format file using any one of these file compression utility programs and then decompress it later on, will that decompressed raster file format still have the same resolution and same file size like it was before it was compressed or not and 'some limited loss' will occur after image file decompression? Please explain.

2. Yes, I could perform a simple test or experiment on a image file format by comparing the original image file format resolution and file size to the final resulting decompressed image resolution and file size myself;  however regardless of the results (and especially the case if they ARE the 'same' in terms of resolution and file size), there may be something I am not aware of at a more technical level that I may of lost (or less likely gained) comparing the original image file and the decompressed image file. If so, please explain. (Yes, question number 2 is much like question number 1; however looking for OTHER technical issues at work, if indeed there are any.)

Please reply.

Thank you!

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