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What image file type has already been compressed?

An image file type that has already been compressed is a jpeg.


Is JPEG larger than raw files?

No, Raw files are larger and are not compressed.


Will saving a file as a JPEG actually means that you will lose a bit of details?

Yes because it gets compressed


Saving a file as a JPEG actually means that you will lose a bit of detail?

Yes because it gets compressed


What is a compressed format useful for photographs?

JPEG since it compressed well, and is supported by virtually all devices and programs. To have a look in detail at its advantages see the related questions.


How bit-mapped graphic file can be compressed?

MSPaint can compress *.bmp files as JPEG, TIFF, PNG and GIF.


What is compression signature?

A compression signature in the case of JPEG files is a signature embedded into a photo taken by a camera that is the signature of the camera that took it, or a photo editor (such as Photoshop) that compressed the image into a JPEG file. A program like JPEGsnoop can uncover compression signatures in JPEG files.


Is JPEG Compressed or uncompressed?

JPEG is a compressed file. It has the following steps of compression 1. Block Preparation 2. Forward DCT(Direct Cosine Transform) 3. Quantization 4. Zig zag scan 5. DPCM encoding/ RLE encoding 6. Huffman encoding 7. Frame building


Image files that are repeatedly compressed by the JPEG algorithm suffer visible quality degradation?

There are some opinions that this is the case (see the link "JPEG Image Compression Degradation"), but I cannot agree. Normally there is no major degradation of the image by repeating the open/save jpeg operation again and again. The reason is the after the first compression step, the image colors are shifted to improve the jpeg image. After the second open the colors are already very close to the jpeg compressed data and there will be no significant change anymore. There are minimal differences, but this is it. Even with 5% quality, the output image quality remains stable. The file size remains also stable.


Is TIF a better file format than JPEG for preserving image quality?

TIF is generally considered a better file format than JPEG for preserving image quality because TIF files are uncompressed and do not lose image data, while JPEG files are compressed and can result in some loss of quality.


What are JPEG artifacts and how do they affect image quality?

JPEG artifacts are visual distortions that occur in images compressed using the JPEG format. These artifacts can include blocky patterns, blurriness, and loss of fine details. They affect image quality by reducing sharpness and clarity, especially in areas with high contrast or fine textures.


Whats the difference between a JPEG and bmp images?

JPEG and BMP image types use different programs and algorithms to record and store the data. The BMP (bitmap) is the older format while the JPEG (Joint Photographic Experts Group) format is more recent. One difference between a JPEG and a BMP file is that the bitmap file is larger in size. This is due to the JPEG file being compressed which in turn causes a loss in picture quality.