Progressive Graphics File

<p>PGF (Progressive Graphics File) is a <a href="/facts/Wavelet/3XcX4uIP">wavelet</a>-based <a href="/facts/Raster_graphics/HkXNc8oI">bitmapped</a> <a href="/facts/Graphics_file_format/tLGQogv3">image format</a> that employs <a href="/facts/Lossless_data_compression/LS702KsN">lossless</a> and <a href="/facts/Lossy_data_compression/jHW7DDv3">lossy data compression</a>. PGF was created to improve upon and replace the <a href="/facts/JPEG/HQ8QS3uB">JPEG</a> format. It was developed at the same time as <a href="/facts/JPEG_2000/GAzXdHI2">JPEG 2000</a> but with a focus on speed over <a href="/facts/Data_compression_ratio/eDEWGzTv">compression ratio</a>.
</p><p>PGF can operate at higher compression ratios without taking more encoding/decoding time and without generating the characteristic "blocky and blurry" <a href="/facts/Compression_artifact/7DhxoVAv">artifacts</a> of the original <a href="/facts/Discrete_cosine_transform/gPpDhPwP">DCT</a>-based JPEG standard. It also allows more sophisticated <a href="/facts/Progressive_download/C8Wdgrbo">progressive downloads</a>.
</p>

Progressive Graphics File open-in-new

Progressive Graphics File