Display JPEG quality / compression level in info box

[pangwolin]

Irfanview has a very neat feature: it can display lots of information about a JPG file very fast:

The JPEG quality is very hard to find in XnviewMP, only displayed in a cluttered property box and only in Browser mode.
It would be really good to have these details accessible through the information box in View mode as shown below.

Imagemagick does provide this info through the "identify" tool as follows (probably not the solution for XnViewMP but it's just as an example):[/size]

Code: Select all

>identify -format '%Q ~/user/Pictures/GITS_SITE_1920_AT_31.jpg 
91

Please consider adding this small fix. I skim through a lot of pictures that I have to finely optimize and this info is crucial to me (along with Progressive or not, Greyscale or not, Chroma Subsampling).

Side note: it's funny to see that the value returned in IrfanView is not the same. I guess it's just an estimation. I couldn't find any info on what library he uses for that.

Thanks for supporting this great project on Linux by the way. I'm on my way to donate. :)

[XnTriq]

Welcome to the forum, pangwolin (-:

I skim through a lot of pictures that I have to finely optimize and this info is crucial to me (along with Progressive or not, Greyscale or not, Chroma Subsampling).

I wholeheartedly support your request!

Related topics:

• JPEGsnoop – JPEG File Decoding Utility
• A foreign thread about sorting by image "quality"
• Should "DCT Method" be fast or slow?
• Estimated quality for JPEG export

[cday]

The JPEG quality is very hard to find in XnviewMP, only displayed in a cluttered property box and only in Browser mode.
It would be really good to have these details accessible through the information box in View mode as shown below.

Welcome to the forum, pangwolin (-:

I skim through a lot of pictures that I have to finely optimize and this info is crucial to me (along with Progressive or not, Greyscale or not, Chroma Subsampling).

I wholeheartedly support your request!

I often double-click on an image file which then opens in the viewer, I can click on the toolbar 'I' icon and see everything I need except the compression level, for that I have to switch to the browser, and I then usually have to browse to the file which can be slow...

This detail change surely wouldn't be difficult to implement?

[xnview]

you have the estimated quality in browser mode and not in viewer?

[cday]

you have the estimated quality in browser mode and not in viewer?

That is exactly the problem and it continues to be a serious inconvenience :

Screenshot from 2021-02-02 11-18-41.png

[xnview]

and in browser you have it?
If it's available in browser, i have it in viewer too

[cday]

and in browser you have it?
If it's available in browser, i have it in viewer too

It is available in the browser but not in the viewer...

0.98.1 AppImage and Windows, and all previous versions, I think.

[xnview]

i've tried with 0.98.1, and i have 'estimated quality' in browser and viewer

[cday]

i've tried with 0.98.1, and i have 'estimated quality' in browser and viewer

OK, the problem is that Edit > Properties... shows 'estimated quality', but clicking on the toolbar 'I' icon opens the display above where it is not included...

That's what I always use as it is more convenient, but at least the issue is now identified and can be corrected.

[xnview]

OK, the problem is that Edit > Properties... shows 'estimated quality', but clicking on the toolbar 'I' icon opens the display above where it is not included...

??? but it's the same function

[cday]

OK, the problem is that Edit > Properties... shows 'estimated quality', but clicking on the toolbar 'I' icon opens the display above where it is not included...

??? but it's the same function

Not for me, I posted a screenshot above, could you check please...

Steps to reproduce:

Open a JPEG in the viewer;

Click on the Toolbar 'I' 'Properties' icon.

'Estimated quality' is not displayed.

[xnview]

Not for me, I posted a screenshot above, could you check please...

and in browser (for same image)?

Open a JPEG in the viewer;

Click on the Toolbar 'I' 'Properties' icon.

'Estimated quality' is not displayed.

it works here, you open a jpeg from browser?

[cday]

Any way: From the browser, from File > Open... in the viewer: never 'estimated quality' from the 'Properties' icon on the viewer toolbar...

Steps to reproduce:

Open a JPEG using File > Open... in the viewer;

Click on the Toolbar 'I' 'Properties' icon.

'Estimated quality' is not displayed.

[xnview]

Clipboard-1.jpg

[cday]

That is the result of using Edit > Properties...

The result using the 'steps to reproduce' above is different: it does not include the 'estimated quality' term.

From here in the Royaume-Uni Libre, it seems clear that different code is used by the toolbar 'Properties' icon from that used by Edit > Properties... and the browser.

Using the code used by Edit > Properties... for the toolbar icon should resolve the issue, and also slightly reduce the 'weight' of 'MP...