: Is it safe to assume 99.9% of browsers in use now can display PNG files? This is similar to this question, but that question and answers are 2 years old. Also, the answers aren't succinct.

@Holmes151

All browsers, including IE4, IE5 and IE6, display PNG with GIF-like transparency correctly:
calendar.perfplanet.com/2010/png-that-works/#paletted

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@Angie530

Here's StatCounter's public data on browser usage. It should be rounder than W3Schools', which is based on their own logs. The people who go to W3Schools, read: developers, are generally not the best cross-section for basing this kind of thing on. You can also break down the StatCounter data by geographical area, if that's any sort of consideration.

Set the "Stat" selector to "browser version." Worldwide, IE6(generally the main consideration) isn't even on the graph anymore. IE7 does support alpha, which a few relatively minor glitches, like a weird flash if you use Javascript to fade those images in and out sometimes.

The Wikipedia article on browser usage has links to a bunch of other similar large reports you might also check out for general comparison. There's summaries at that URL, but the Source column links out to detailed information for each.

There's also a great page on Wikipedia showing which browsers support PNG.

Ultimately, though, you need to temper anything you see at from these sources with what's actually happening on your site. If a large percentage of your audience is within certain business sectors, for example, IE6 will still be a significant problem.

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@Turnbaugh106

According to W3Schools' Browser Stats, about 98.2% of browsers are IE 7+, FF, Chrome or Opera, which all support PNG format with transparency. So, not quite 99.9%, but pretty close.

The stats say about 0.6% of uses have IE6, which suppports PNG without transparency (transparent PNGs in IE6 just have a solid white background).

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