XnView Software

If the creator of xnviewmp is interested in creating the fast jpeg thumbnails, I have found that there is a library called epeg which does it and claims to be the fastest in existence. I would guess Picasa is either using this library or a very similar method of decoding the jpegs.

It takes some time for it to generate thumbnails for a png, it seems. It does jpegs IMMEDIATELY though. But as I said, I'm fairly certain that none of my jpegs contain thumbnails embedded inside.

I start up picasa image viewer, and about 1 second later, it will spit out thumbnails for about 18 ...

Maybe because you have checked the picasa v3 folder manager option " scan once" instead "scan always" ?

Nope, the main picasa 3 application would rebuild the thumbnails if I ran it, the picasa image viewer did not though, so the image viewer is able to function properly without any thumbnails ...

Someone who probably knows what he's talking about just told me that you can probably get the fast small blurry previews on jpegs by discarding the high frequency coefficients and not performing idct.

I'm not sure if xnview uses it's own decoders though, as this would require changing the code that ...

give me just picasa3 image viewer with a extended image format support:
(floating point like hdr, exr, etc..) and I'd pay a lot for it.
yes, all I actually need is just a damn simple VIEWER (but a fast one and rock stable.)
I think you just described FastPictureViewer: http://www.fastpictureviewer ...

Ah, interesting. I decided to try checking what these files are used for.

I had the following major files:

bigthumbs_0.db (17mb)
previews_0.db (60mb)
thumbs_0.db (15mb)
thumbs2_0.db (3.82mb)

Picasa photo viewer apparently DOES NOT USE any of these files. Rather, they are created by the main ...

Ok, I gave picasa a try. Where does it store it's thumbnail database? I can't seem to find it.

From testing with some rather large images, it seems that picasa always starts out with just the normal tiny thumbnail, and then from there, it will generate a midrange image (so it looks clear while ...

I have never used Picasa so maybe this is wrong, but after reading this thread I think I have an idea of how Picasa might display proxy images quickly.

JPEG images can be stored in a "progressive" format, which means if your browser is trying to download such an image on a webpage, then you first ...