Hello
Is there a way to speed up RAW photos load time in Gwenview - it takes up to 5 seconds just to show one photo.
Thank you.
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Difficult to say no info raw image sizes Vs computer age and specs, cpu, ram, swap ?
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It is slow not because of a hardware. I am also using windows program âfast stone viewerâ in âbottlesâ and it opens raw photos in an instant. Tried other image viewers like âPhotoQTâ, âgthumbâ and they are also as slow as Gwenview. Maybe my system needs a special driver for RAW?
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I uninstalled Gwenview and now I use Nomacs (I think it is the fastest/best image viewer for Linux).
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Just curious, but what are your machine specs and what drive(s) are you using?
What camera are you using?
While I agree that gwenview is zloow at loading raw images, Nomacs is by no means the best linux image viewer. It doesnât respect settings, tabs are a mess, parts of the fonts are unreadable, thumbnails are often blurred etc etc aaand it doesnât load/execute custom desktop applications. In terms of lightweight viewers, qimgv does a much better job. And that one loads RAW images just as fast.
For example, Nomacs fails a desktop/wallpaper application:
Whereas with qimgv, you can load scripts, desktop applications that work. Sure, they use assigned shortcuts but, like me, you can always create the functions within the application file itself.
Moreover, it has a nicer ui overall and, unlike nomacs, a file panel that doesnât drive you nuts.
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Hi,
I tried qimgv, but it is as slow as gview, because it is uploading actual raw data, it cannot show jpegs embeded in raw files (PhotoQt uses LibRaw for decoding and displaying RAW images it would be nice if qimgv could implement that) also it cannot show histogram and metadata (at least my old cameraâs .CR2). Otherwise it is a nice program.
Hi,
the only way too speed up displaying RAW images in gwenview is to patch it. The original implementation of RAW displaying in gwenview utilized library from digiKam to extract preview jpeg thatâs stored in the RAW by the camera. Thatâs fast, as it requires no processing whatsoever, it just displays the embedded jpeg. Last year, kimageformats 5.99 brought RAW support via QtRaw plugin. Sideeffect of it was that it changed mimetype reported by kimageformats to gwenview, breaking RAW displaying. As a âfixâ, gwenview switched RAW displaying to QtRaw which does not support the embedded jpeg extracting, hence now gwenview display RAW slowly and the images are ugly.
I prepared patched version for Fedora 40 that uses the digiKamâs library over QtRaw. I canât post links here but you can find it on fedoraâs COPR instance under coprs/mkyral/gwenview/