Re: Raster compression
Holger Gräfe via ipp <[email protected]> Thu, 26 Feb 2026 09:40:47 +0000
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<html><body><div style="font-family: 'verdana'; font-size: 12px; color: #000;"><span style="background-color: #ffffff;">Hi Piotr,</span></div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;"><span style="background-color: #ffffff;"> </span></div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;"><span style="background-color: #ffffff;">you may try whether compression on HTTP level via header field "Content-Encoding" is accepted by the device. There are various compression methods defined, e. g. "gzip". However, I'm not sure whether any of them is effective for arbitrary raster image data.</span></div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;"><span style="background-color: #ffffff;">You can find more details here: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Encoding</span></div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000;"><span style="background-color: #ffffff;"> </span></div>
<div style="font-family: "verdana";
font-size: 12px;
color: #000;">Best regards,</div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000000;">Holger</div>
<div style="font-family: 'verdana'; font-size: 12px; color: #000000;"> </div>
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<div><strong>Gesendet: </strong>Donnerstag, 26. Februar 2026 um 04:40</div>
<div><strong>Von: </strong>"Piotr Pawliczek via ipp" <[email protected]></div>
<div><strong>An: </strong>"PWG IPP Workgroup" <[email protected]></div>
<div><strong>CC: </strong>"Piotr Pawliczek" <[email protected]></div>
<div><strong>Betreff: </strong>[IPP] Raster compression</div>
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<div><br>
<div>Hello Everyone,</div>
<div> </div>
<div>I am looking for guidance on the best approach for handling larger rasters. Specifically, what is the current recommended method for raster compression?</div>
<div> </div>
<div>There is a "compression-supported" IPP attribute that allows the client to apply compression to the IPP payload. However, for many printers this attribute contains only "none".</div>
<div> </div>
<div>I cannot find any reference to HTTP-level compression. Is it mentioned in any IPP document? </div>
<div> </div>
<div>Or is there any other way to deal with large rasters?</div>
<div> </div>
<div>I would appreciate any information.</div>
<div> </div>
<div>Best regards,</div>
<div>Piotr</div>
</div>
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