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"Images; png Versus jpg" Topic


5 Posts

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549 hits since 25 Aug 2013
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Personal logo Ditto Tango 2 3 Supporting Member of TMP25 Aug 2013 12:15 p.m. PST

.png images have been around for quite some time now.

I have always used jpg images (and gifs for small things).

What's the deal with .png?

Go easy on me, I still write my web pages using Notepad and tables (the latter set up as % width seem to do pretty well on smart phones too, without the need for the meta name="viewport" tag).

Thanks in advance,
--
Tim

KatieL Inactive Member25 Aug 2013 12:48 p.m. PST

PNG is the equivalent of GIF. It's a lossless format.

GIF fell out of favour when it turned out there were patent issues with the compression used in it. PNG was the replacement. By the time all the browsers properly supported PNG, the patent has expired…

PNG is a nicer format though. Worth switching to it for things other than photos.

Personal logo Sue Kes Supporting Member of TMP25 Aug 2013 2:20 p.m. PST

There have been some issues with certain programs and e-mail hosts not being able to open jpg images, so I save everything as png now.

StarfuryXL525 Aug 2013 6:36 p.m. PST

PNG also supports transparency. It was designed as a more fuller-featured replacement for GIF when the licensing issues arose.

KatieL Inactive Member27 Aug 2013 2:01 p.m. PST

GIF does also support transparency, but only 1 bpp, unlike PNG's full transparency plane.

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