Can't resize photos

[Bainford]

For over a year now, I can't seem to resize photos when posting them. I can resize them when drafting the post, and the photos do reduce, but when I submit the post, the photos return to their original size. This is true of photos I have taken myself, and photos copied from the internet.

Does anyone else have this problem?

Any suggestions on how to correct this?

[stitchdup]

9 minutes ago, Bainford said:

For over a year now, I can't seem to resize photos when posting them. I can resize them when drafting the post, and the photos do reduce, but when I submit the post, the photos return to their original size. This is true of photos I have taken myself, and photos copied from the internet.

Does anyone else have this problem?

Any suggestions on how to correct this?

Honestly, I wouldn't worry about it, the pics are posting and thats the bit that matters. Its probably the forum resizing the pics but if you have a photo host you could upload it that, then download a different size to see if it still happens.

[peteski]

Trevor, I don't think the forum ever had a capability to resize photos during upload (to make the file size smaller).  You have to do that before you upload them.

Or if you mean that you want to display them smaller size, that feature is still available, but that doesn't make the file size smaller, just the way they are displayed in the browser viewing the thread.

Check this post. Is this what you want?

 

[Straightliner59]

I use a couple of different free photo editing programs. My favorite is FastStone Image Viewer. That's how I edit all my photos, posted here. I can crop them, resize them, and reduce the DPI. I resize to 1024 pixels, on the long side--in the case of portrait-oriented photos, I go 1024 pixels on the vertical. If necessary, I can reduce the DPI to 72, to keep the file size right about 100k. Irfanview is good, as well, but FastStone is a bit more versatile.

[peteski]

9 hours ago, Straightliner59 said:

I use a couple of different free photo editing programs. My favorite is FastStone Image Viewer. That's how I edit all my photos, posted here. I can crop them, resize them, and reduce the DPI. I resize to 1024 pixels, on the long side--in the case of portrait-oriented photos, I go 1024 pixels on the vertical. If necessary, I can reduce the DPI to 72, to keep the file size right about 100k. Irfanview is good, as well, but FastStone is a bit more versatile.

That makes no sense to me.  The file size (the X-Y pixel dimensions) and the compression ratio are what determines the size of the file. DPI value just tells the program displaying them (or printing them) how to display or print them.

An image that is 1000x500 pixels in size defined as 300dpi image will display or print as 3.3" x 1.8" picture. If defined as 72dpi image it will display or print as 13.9" X 6.9" picture.  The 72dpi picture will look worse because the same number of pixels are contained in the image file, but now printed or shown "magnified" or "zoomed".  But the actual file size does not change depending on what the dpi setting is defined as.

If the file size of a 1024x768 photo changes depending on how you define its dpi then something makes no sense.  I suspect that when you reduce the dpi the editing program resamples the number of pixels to be smaller.  That is how my Corel Photo Paint works.

[Straightliner59]

13 hours ago, peteski said:

That makes no sense to me.  The file size (the X-Y pixel dimensions) and the compression ratio are what determines the size of the file. DPI value just tells the program displaying them (or printing them) how to display or print them.

Maybe, then, that's where I am confused. Once I resize/resample them to 1024 (long side), when I save them, I click on options, and can slide the quality (I assume) from 100, down. I slide it until it's just below 100k, which could be anywhere. Usually, it's around 80-85, on their scale. I just assumed it was DPI, for printing, but, maybe it's just a meter of quality--or compression. I never worried about what it actually is, because I never thought I might have to try to explain it!

[peteski]

8 hours ago, Straightliner59 said:

Maybe, then, that's where I am confused. Once I resize/resample them to 1024 (long side), when I save them, I click on options, and can slide the quality (I assume) from 100, down. I slide it until it's just below 100k, which could be anywhere. Usually, it's around 80-85, on their scale. I just assumed it was DPI, for printing, but, maybe it's just a meter of quality--or compression. I never worried about what it actually is, because I never thought I might have to try to explain it!

Yes, the dpi value stored in the image file is just a reference value for programs which open the file to tell them in what side to display or print them. Yes, it is mainly used for printing.  I'm a bit puzzler that you mention startign from 100, but then you mention 100k (as in 100,000?).

If you're curious, you could check yourself if that slider is for changing the dpi value.  Resize your image to 1024 pixels across and select around 300dpi, then save it as a file called test300.jpg.  Then without exiting the program re-save the same file but that time select around 72dpi, and save it as test72.jpg. If you list properties of both files the size of both should be the same or close.

But it could also be for the compression setting.  My graphic program allows for setting independent values for both, dpi and compression.  But in my graphic editor the compression value is in a range of 0 (no compression) to 100 (highest compression which would result in smallest file size).

Anyway, if you are not really interested in all those details, forget about it.   I only chimed in because what  you mentioned didn't make sense to me.

[Straightliner59]

On 4/19/2025 at 7:46 AM, peteski said:

If you're curious, you could check yourself if that slider is for changing the dpi value. 

I think I figured it out: It's because the photos I edit are NEF format. When I convert them to jpeg, post-editing, it's an option for quality of the jpeg, related to the NEF file.

[peteski]

4 hours ago, Straightliner59 said:

I think I figured it out: It's because the photos I edit are NEF format. When I convert them to jpeg, post-editing, it's an option for quality of the jpeg, related to the NEF file.

That makes total  sense.  Quality of the JPG file (its compression) affects the file size.

[Straightliner59]

15 hours ago, peteski said:

That makes total  sense.  Quality of the JPG file (its compression) affects the file size.

As I frequently tell people; "I'm slow, but I catch on!" 😀