Please log in. To create a new account, enter the name and password you want to use.
If you supplied an email address when you signed up or added a email later, you can have your password reset.
This user name doesn't exist. If you want to create a new account, just verify your password and log in.
This user name exists. If you want to create a new account, please choose a different name.
Enter the current email address you have registered in your profile. You'll get an email containing your new password.
You have no email address in your profile, so you can't have your password reset.
Password reset. Check your email in a few minutes
That account does not exist.
The email address specified is not registered with this account.
Delivery to this email address has failed.
I see no point to do so on files that are digitally released (as on author's pixiv, twitter or whatever). If JPEG artifacts are moderate, just post the original and use jpeg_artifacts tag; if users want a "cleaner" version they can download and process it themselves.
If the artifacts are very heavy, chances are waifu2x is also going to kill some details in order to remove these excessive artifacts - at least that's my experience.
Generally speaking, it's normally better to keep more "pristine" versions of these images, since no processing is perfect or lossless.
I do found it's useful in processing scans, particularly when the screenings are small in scale (either low DPI scans, or high quality printing).
fireattack
If the artifacts are very heavy, chances are waifu2x is also going to kill some details in order to remove these excessive artifacts - at least that's my experience.
Generally speaking, it's normally better to keep more "pristine" versions of these images, since no processing is perfect or lossless.
I do found it's useful in processing scans, particularly when the screenings are small in scale (either low DPI scans, or high quality printing).