re: jfif and webp (Page 1/1)
TheDigitalAlchemist OCT 12, 01:50 PM
I prefer jpg and png, what about you?
Jake_Dragon OCT 12, 02:13 PM
well you can rename both of them and an updated browser or the picture viewer wont care.
williegoat OCT 12, 02:46 PM
Tux don't care.

This images is larger than 153600 bytes. Click to view.

File extensions are so squishy biological entities can comprehend what the machine already knows.
TheDigitalAlchemist OCT 12, 05:13 PM

quote
Originally posted by Jake_Dragon:

well you can rename both of them and an updated browser or the picture viewer wont care.



But...I'll still KNOW...
Patrick OCT 12, 05:20 PM

quote
Originally posted by TheDigitalAlchemist:

re: jfif and webp

I prefer jpg and png, what about you?



In what context?

It doesn't matter to me as far as simply viewing an image online... but downloading and/or copying an image to use in a post here for example certainly makes a difference. I don't know of an easy way to deal with webp images, except for perhaps doing a screen grab, but that's a nuisance.
williegoat OCT 12, 06:15 PM
Using a .webp here is no different than any other image format:
Patrick OCT 12, 06:49 PM

quote
Originally posted by williegoat:

Using a .webp here is no different than any other image format:



Okay, there might be a couple of different issues at play here.

Yes, I can download and save the webp images you posted... but I'm pretty sure when I've tried to do the same simple procedure with webp images displayed in online sites that I instead ended up with hyperlinks to the entire page. I'll check into this further and report back.

The other issue is that my trusty old ACDSee image viewer that I use on my Win7 PC does not recognize webp images. Yes, I can open up the webp images of yours that I downloaded using another utility, but I like how I can configure and use ACDSee.

[EDIT] I tried something simple, which was to download a webp image from an ad on a site, and it did download... but of course my default viewer can't "see" it. I'm still not sure where or how I seemed to download hyperlinks instead of an image. I'll continue to look into that.

[This message has been edited by Patrick (edited 10-12-2022).]

theogre OCT 12, 08:13 PM
In very short...
WebP is a scam format pushed by Google to "bypass" patent/copyright of other formats. Supports Lossless and Lossy compression IOW act as PNG or JPG. (Related is WebM for videos etc is "sponsored" by Google...)
Nomacs and some image tools can batch convert to and/or from this format. I use WebP to PNG to prevent adding JPG losing data.
It does Nothing for nearly all image authors and users.

JFIF is very old but has problems. Is "basically" another version of JPG/JPEG but the Windows and many Programs have the Extension mapped different or ignores them when trying to opening a JFIF file. Sim problems if find a TIFF file that Windows still support but mainly only as a Fax to send or get. (Fax programs and some early dig-cams uses TIFF but many other old programs used it too as lossless image file.)
Note: If a JFIF contains Exif data some problems have problems because of the "hack" to put Exif in a JFIF.
It does Nothing for nearly all image authors and users.

JPG/JPEG works but has problems like edit a pic to add text etc to highlight a thing and have high compression then text often will look like crap and hard to read. Some Image Editors will warns users not to compress output < 90-95% for this reason. JPG and JPEG is same thing for the most reasons. DOS and others only allow 3 char extension by system design or just default since Win95 while Mac and a few others default to JPEG.

PNG like GIF will handle text and line art very well but PNG handle 24 or 32 bit color spaces. (Common GIF has 256 or less colors.)
GIF still works when have section of FSM and related and compress very small w/o text wreckage as JPG often have.
I use both depending on what I'm doing or the source of original image to edit and set the output.
Examples: Edit a JPG to add Text then likely output will be PNG. Edit Fiero FSM image to add Red and Blue Text then output could be GIF or PNG.
Why GIF? With good software, save as GIF can set color space to B/W and 4 color making a output file Very Small because even now many users are using modems or have data caps to worry about.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

[This message has been edited by theogre (edited 10-12-2022).]

williegoat OCT 12, 08:47 PM
When I said above, that "Tux don't care", what I meant was that Linux has no problem dealing with just about anything you can throw at it. Gwenview is good for everyday viewing and basic editing (resize, rotate, etc.) and GIMP will do just about anything you can do with Photoshop.

When I plug my Nikon DSLR in, Gwenview offers to download the files, which are in a Nikon proprietary format (.NEF), and when I am ready to edit them with GIMP, it first opens the file in RawTherapee for exposure and metadata adjustments, then hands the image over to gimp automagically.



If you look carefully, you will see that I changed the .NEF extension to .whatchamacallit just to show that "Tux don't care!"

[This message has been edited by williegoat (edited 10-12-2022).]

theogre OCT 13, 09:48 AM
NEF is maybe a RAW type and some Image Editors know how to take them.
RAW types not only have odd names but inside data can vary a lot between brands and even between models. Isn't like Standard JPG etc that everything can read.

Very Old Dig-cams like Kodak DC40 and DC120 only put out KDC and other weird files and Some newer like Kodak p850 use for RAW pic that only a few tools could read. Even some current RAW and other covert odd name files can't read them because never used by general public.

E2A--> RAW is close to same output as the sensor chip in the camera that internal CPU then process.
But Some odd names may not be very RAW even then because camera CPU can still affect colors and more and even compress w/ whatever format.

[This message has been edited by theogre (edited 10-13-2022).]