| Summary: | compression level option for saving png's | ||
|---|---|---|---|
| Product: | [Applications] kolourpaint | Reporter: | Joerg de la Haye <haye> |
| Component: | general | Assignee: | kolourpaint-support |
| Status: | CONFIRMED --- | ||
| Severity: | wishlist | CC: | kollix, nicolasg |
| Priority: | NOR | ||
| Version: | unspecified | ||
| Target Milestone: | --- | ||
| Platform: | Debian testing | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
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Description
Joerg de la Haye
2005-06-28 14:26:08 UTC
On Tue, 28 Jun 2005 10:26 pm, Joerg de la Haye wrote:
> It would be nice to have an option set the quality level for png's, at
> least like the slider you have for saving jpeg's.
Aren't PNGs lossless?
They are. But you can choose a compression level. It uses the deflate-algorithm, according to wikipedia.org. It can be found also in ZIP, GZIP and for TIFF. As the usage in ZIP shows, it's lossless. I've chosen a wrong title for my bug, "quality option for saving png's" is completely incorrect, it has to be "compression level option for saving png's". I've had a look at the GIMP, they have these option; other KDE programs like krita or kooka don't have it. Technically, it can be set by QImageIO::setQuality with a 0 (zero) as parameter (that would be the same as gzip -9) However in KDE there is an history of not letting the user select the gzip compression level. (It cannot be done in KTar and KZip either.) Have a nice day! On Wednesday 29 June 2005 16:24, Nicolas Goutte wrote: (,,,) > However in KDE there is an history of not letting the user select the > gzip Sorry I meant "zlib" here. > compression level. (It cannot be done in KTar and KZip either.) (KTar supports gzipped files too.) > > Have a nice day! Reassigning bugs to KolourPaint support email address. |