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Feb 2022

Webtoon recently changed the size requirements for the thumbnails and now have a vertical thumb option.
Square: 1080X1080 500KB or less
Vertical: 1080X1920 500KB or less

I thought this shouldn't be hard, all I gotta do is resave my original to that size right? Nope!

The original CSP file I drew it in is 2480X2480 with 300dpi. The exported PNG I use for Webtoon and Tapas is 300X300 with 300dpi. When I try to export it as 1080X1080 the file size is 780KB (too big). If I export it with 72dpi then the dimensions will be too small. Webtoon wants the thumbnail to be EXACTLY 1080X1080.

I'm groaning at the idea that I may have to make a new thumbnail, but even if I did, I might still have a problem trying to get the file size and dimensions perfect.

Does anyone know the secret to exporting the perfect dimension and file size? Or if there's some conversion site that'll figure that out for me?

  • created

    May '21
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    Feb '22
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Hey in case you are still looking for the way to do this in CSP -- When you change your canvas size to a lower DPI, you don't have to accept the new px dimensions. Sometimes the program will calculate new dimensions for you when you put in a new DPI, but you can just retype in exactly the dimensions you want. So, just change it to 72 DPI at 1080 x 1080.

And because I just remembered this is CSP and not Photoshop--make sure to change these dimensions through "Edit > Change image resolution" If you are using the "File > export" tool it doesn't actually care about conserving space and it's not a good place to fiddle with size and resolution at the same time. They assume you already did that before you went to "File > Export."

Thanks! I can't believe I overlooked that option in "change image resolution" section. :cold_sweat:
I'm always learning something new about clip studio

This is only for printing posters.
You only have to make this 72 DPI, because that's what the internet use.

Try that and save some GB

Edit: Ya, like the other here said. Sorry I was late for the party, can't take credit for what other just said

I thought 300dpi was recommended for everything lol
At least I can print my pages if I ever plan to

TBH DPI doesn't matter too much for the internet, because it'll actually change the resolution for whatever your screen is. You can have any DPI over 72 and it will look exactly the same on ye olde internet (and the number 72 is left over from like the 90's and doesn't matter anymore. It's just tradition now). Once you save as pixels as well, the DPI information is no longer a factor. When you save in inches, it hella does. So, the only reason to scale down resolution on a pixel-resolution image would be to save size, if necessary.

9 months later

If you have photoshop, it also has a pretty effective image compression on "export as." 1080x1080 jpegs that's around 1.2mb could get reduced there into 250kb without any noticeable quality loss.

It's true, I had a lot of problems at the beginning and after a while I realized... luckily they didn't change the format of the images of the episodes, that would be a big headache.