Lossy PNGs

Cypherswipe · November 16th, 2004

It seems someone has come up with a way to make lossy PNGs. So far it has no real advantage over other formats, but it has the potential to become an alternative to JPGs. The JNG format already covers this territory (combining PNG with JPG), but has almost no support (for creating, nor viewing). The JPEG2000 format is also an alternative to JPG, but (like JNG) has very little support (especially in browsers). Lossy PNGs on the other hand, can be read by any program that can read a standard PNG (which is pretty much everything currently on the market). I put up a page about lossy PNGs, including a number of samples: http://allspark.net/cypherswipe/lossypng.html

**Razor Blade** · November 17th, 2004

Doesn't seem to great. Increased file sizes and more quality loss? Eh, what's the deal?

Valcrist · November 17th, 2004

yeah....I don't get it either

Cypherswipe · November 17th, 2004

In it's current form, there is little advantage to it. The only current advantage is the ability to use true color PNGs with alpha transparency on a webpage, without the massive filesize of a lossless true color PNG. The big deal however, is the potential. If this guy can get the quality/filesize ration closer to that of JPGs, lossy PNGs could replace JPGs.

November 16th, 2004	#1 (permalink)
Cypherswipe Extra Large Member Join Date: May 2003 Posts: 934	Lossy PNGs It seems someone has come up with a way to make lossy PNGs. So far it has no real advantage over other formats, but it has the potential to become an alternative to JPGs. The JNG format already covers this territory (combining PNG with JPG), but has almost no support (for creating, nor viewing). The JPEG2000 format is also an alternative to JPG, but (like JNG) has very little support (especially in browsers). Lossy PNGs on the other hand, can be read by any program that can read a standard PNG (which is pretty much everything currently on the market). I put up a page about lossy PNGs, including a number of samples: http://allspark.net/cypherswipe/lossypng.html __________________

November 17th, 2004	#2 (permalink)
Razor Blade Locked and Loaded Join Date: Aug 2002 Location: I AM CANADIAN! Posts: 12,024	Doesn't seem to great. Increased file sizes and more quality loss? Eh, what's the deal? __________________ -------------------------------------------------------------------------------- Core 2 Duo T7300 2.0 GHz ● NVIDIA GeForce 8400GS ● 2GB DDR2 RAM Hitachi 120GB HD ● Dual Layer DVD+/-RW Drive ● Windows Vista Home Premium ● Dell 2007WFP LCD ● Dell XPS M1330 Laptop ● 1TB Western Digital MyBook External HD ● Logitech Z10 Speakers ● PLAYSTATION 3 --------------------------------------------------------------------------------

November 17th, 2004	#3 (permalink)
Valcrist Resident Mac User Join Date: Apr 2003 Location: (Hicksville Florida) Posts: 1,447	yeah....I don't get it either __________________ \| Athlon 64 3200+ \| ASUS 6600GT \| 1 GB Dual Channel \| 20 GB Windows XP \| 100 GB Ubuntu \| 120 GB Storage \| \|14" iBook G4 1.33Ghz\|512 MB\|Radeon 9200\|60GB OSX Tiger\| >--Visit my blog--< http://blog.efx2.com/user/Tim

November 17th, 2004	#4 (permalink)
Cypherswipe Extra Large Member Join Date: May 2003 Posts: 934	In it's current form, there is little advantage to it. The only current advantage is the ability to use true color PNGs with alpha transparency on a webpage, without the massive filesize of a lossless true color PNG. The big deal however, is the potential. If this guy can get the quality/filesize ration closer to that of JPGs, lossy PNGs could replace JPGs. __________________

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