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Forums > Senate Hall > SH:Change to image policy: JPG vs. PNG

Wookieepedia's image policy currently favors the JPG format for photographic images and images with over 256 colors. However, every user who works a lot with images knows that when it comes to movie and episode stills, png is far superior to JPG when it comes to quality. PNG screenshots are much clearer than JPG screenshots and PNG handles detailed, high-contrast images well. It's for this very reason PNG is more often than not the default file format for screenshots, as it provides an almost perfect pixel-for-pixel representation of the screen. I think we should reword the rule, so that PNG is the favored version for photographic images, not JPG. Thoughts? --You don't have to be crazy to hang out with me. I'll train you. –Nightlily 21:47, April 28, 2018 (UTC)

  • I agree wholeheartedly. PNG is much superior to JPG and saves images at a much higher quality. I'm surprised this wasn't policy already. Icon Faction ImperialCommander Boots
    • I certainly don't have any objections to this in principle, though it may be helpful to know why JPG was decided upon in the first place. ProfessorTofty (talk) 17:50, May 5, 2018 (UTC)
      • The policy was created by Imperialles, with most updates of any significance being made either by him or by Darth Culator. Imperialles was our biggest image wonk for years, so he would have been the person to ask, but he hasn't been active in nearly four years. That leaves Culator as the only one likely to have an idea. jSarek (talk) 00:57, May 6, 2018 (UTC)
        • Not an expert on the subject here, but I don't think there's any reason to use JPEG, a lossy format, over PNG, a lossless format, seeing as file sizes and storage isn't really an issue here. 1358 (Talk) 21:20, May 7, 2018 (UTC)
          • JPEG still tends to give you smaller file sizes, which is nicer as an end-user browsing the site, or if you have a lower-bandwidth connection. PNG should definitely be used for anything like text-based photos and crisp graphic images, that would otherwise severely suffer from jpeg compression. —Xwing328(Talk) 20:04, May 8, 2018 (UTC)
            • Most of our images should be served to the end user as thumbnails anyways, so the file size shouldn't really be an issue. 1358 (Talk) 20:20, May 8, 2018 (UTC)

The only problem I have here is that when policies change these days, "favored" has a tendency to become de facto "mandatory." Since a large number of our images come unmodified from source websites or are extracted unmodified from games/apps, and there's absolutely no point to converting images that start in a lossy format into a lossless one, this would end up wasting time and effort on the part of editors and uploaders and bandwidth on the part of viewers. -- Darth Culator (Talk) 22:42, May 8, 2018 (UTC)

  • That's actually already covered under an aspect of the current policy, which states that "If you upload a JPEG or PNG graphic that was downloaded verbatim from the Web or underwent minimal modifications (like cropping), please do not resave them in another format." So we're already asking people to not convert images if they don't need to. ProfessorTofty (talk) 17:57, May 11, 2018 (UTC)

I think what we may actually need is an overall revamp of the image policy. I've gotten started on it here, including this suggestion of changing the default format to PNG. If anyone has any suggestions, leave them here or hit me up on IRC and I'll have this ready for the next Mofference. -- Darth Culator (Talk) 19:04, May 23, 2018 (UTC)