A guide for the quality expectation Tantabus has for ai generated images
Due to the ease with which one can create anything, some base checks on quality may be made to prevent everything from being uploaded and cluttering the site with low quality images. This page lists examples of AI related issues.
Images should not present obvious errors that are visible in the default thumbnail size (250x250).
Examples with a ‘💀’ represent errors like these are practically guaranteed to be removed.
This does not represent a checklist through which all uploads go through, but a simple way for us to point out common “low quality” issues that should be avoided and could have been the reason an image was removed.
The example images used below may present other additional issues. We ask that you focus on the specific issues the image is an example of and ignore extraneous ones.
Additional images are included for examples of non-issues or ones that are “passable”. These aren’t necessarily examples of something good.
Note that this check is treated separately from that which ai composition images are required to pass to use that tag. You can find that list over here.
“Ghost Signatures” are artifacts that resemble an artist signature, print name, URL, logo, or the the logo of sites like Patreon or similar. These do not have to be legible or clearly recognizable as text. These sort of artifacts commonly appear on the corners of an image, or along the contour of a character, much as a human artist’s signature would.
These sort of artifacts are extremely easy to clean up, and we give little exception to their appearance in ai composition images.
Examples of issues that show low quality:
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Bottom right. Artifact does not fit with rest of image, cannot be interpreted as being grass or other detail.
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Bottom right. Artifact on plant leaf is clearly not a detail related to the plant.
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Bottom left, signature-like squiggles.
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Along Dash’s wing, signature-like artifact.
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Bottom left and right, obvious Patreon and other logo
B - Bad Anatomy - General
Extra limbs, missized torsos or limbs, body parts shifting or moving in/out of reality after passing behind something, etc. Some of these errors are so grave they cannot be fixed; also so grave that they should have been spotted early and no more work put into the image.
Examples of issues that show low quality:
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Pinkie’s right foreleg pops in out of nowhere / has an impossible bend.
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Third leg popping out of nowhere.
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Another third leg.
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MC Escher crossed legs, furry face on an unguligrade anthro aside.
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Pinkie’s left forleg vanishes into her apron or just missing entirely. “She’s an amputee for the purposes of this one specific image” doesn’t fly.
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Arm-hoof and hand.
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Extra hoof popping out the back.
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Big Mac’s arm would be unnaturally long, particularly as it wouldn’t be straight.
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A lot of wrong here. And also no to the second floating Pinkie.
C - Bad Anatomy - Deformed Limbs/Extremities
Bad hands, too many fingers, things bending how they shouldn’t, weird bumps. Stylization is OK, fleshblobs are not.
Examples of issues that show low quality:
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Fluttershy’s right hand is a mess, and heavy contrast with how her left is fine.
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Blob fingers.
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Not enough fingers on one hand, too many on another, plus merging flesh.
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Pinkie’s right leg dislocated or has an extra joint.
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Pain.
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Pinkie’s right hand not gripping properly, really bad as this is a focus of the image.
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Too many toes…
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Four fingers on one hand, 6 on the other.
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Limestone’s left foreleg has too steep a bend inwards, and her right starts to bend off screen past where it should be able to.
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Six fingers on Pinkie’s left hand, not counting a hidden thumb. Or her vanishing right hand.
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Fingers on AJ’s left hand are a mess.
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One hand’s a claw, other has a micro pinkie finger.
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Right hand is a mess, fingers merge with hair, and left foot has six toes.
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AJ’s left hand has an extra finger popping in between two other fingers.
D - Bad Anatomy - Phasing and Merging Flesh/Hair/Clothes/Items
Hair merging into flesh, body parts merging into other body parts, characters phasing through objects, clothes turning into different types of clothes…
Examples of issues that show low quality:
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Twilight’s arms clearly merging together.
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Vinyl’s arm fusing through Octavia’s.
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Rainbow Dash clipping through table.
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Flash’s left arm and wing contours switch.
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Pinkie and Rarity’s arms clip through each other.
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Mystery unicorn’s hand vanishes through wall.
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AJ’s ear changes size/shape on passing through hat.
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Rainbow’s right hand clips through skirt.
E - Bad Anatomy - Incorrect Facial Features
Weird eyes, extra nostrils, mouths that just aren’t right, eyelashes and eyebrows that are blobs or simply broken… There’s a lot of small things that can go wrong here, but given how important the face is, they have a lot of impact; faces are important!
Examples of issues that show low quality:
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Rainbow’s right eyebrow breaks as it passes under her hair
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Rainbow’s irises and pupils are wobbly messes, and her mouth more resembles a beak than a snout.
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Artifacts in Fluttershy’s mouth and her left eyelashes.
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Rainbow’s eyelashes have a gap on her right eye.
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Twilight’s eyes and eyelashes merge, and her horn is a blob.
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Two mouths? Extended nostrils?
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The Popeye mouth may pass as a stylistic choice, but that human ear popping out of her jaw does not. Nor her right cheek being torn into by her hand like that.
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AJ’s right iris is messed up. Teeth also too far forward / no upper lip.
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Pinkie’s grin is so big the AI started to give her a third row of teeth.
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The mouth is a mess.
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AJ’s upper lip is missing a chunk.
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Double mouth, and eyes are a mess.
F - Bad Anatomy - Background Characters
They may be in the background, but they shouldn’t look like they’re from The Thing. Background characters shouldn’t look deformed, unnaturally blurry, or otherwise “wrong”. AI tools allow to very easily render a full proper character, scale them down to size, and set in the background… or just remove them entirely.
Examples of issues that show low quality:
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Fluttershy town in itself not an issue, but those clones should look like Fluttershy.
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Massive change in quality between main character and the backgrounder behind her tail.
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Character on right has merging flesh, blobface, different ear colours, etc.
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Character behind Fluttershy’s wing suddenly missing his legs.
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The two characters on the left are noticeably low quality, and the Fluttershy clone on the right is a mess.
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Dr. Moreau’s freak on the left, and eerie no-faces on the right.
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All characters are low detail and missing important elements.
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Center Twilight has five legs, low detail aside.
G - Poor Details on Focus Items
Items a character is interacting with, are wearing, are an important feature in the image, etc. are expected to look like the thing they’re supposed to be and present no obvious errors.
Examples of issues that show low quality:
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Book is both open and closed.
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Neck on Lyra’s glass is broken, left stool has the foot ring fully on the other side, center’s is missing half, and right’s is even worse.
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Perspective for the gun changes from the muzzle to the grip
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Tiny car with a weird hood, and random sci-fi looking thing out of place on the right.
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The car version of The Thing after getting caught.
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Spear shaft shifts on passing behind Rainbow’s leg.
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Busted feather duster, plus a weird way to hold it.
H - Bad Perspective or Background Elements
Perspective shifts along the image, objects impossibly moving from behind to in front of objects, MC Escher style illusions, background objects that don’t make any sense… it may pass muster at first glance, but once you see it, the image is ruined.
Examples of issues that show low quality:
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Rainbow’s right hand moves out and behind a window that’d be far behind her.
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For this to work, the table would be far offset and not in front of the couch, and Vinyl’s legs very long and tapered. Impossible.
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Like the Vinyl image the couch, table, and pose are impossible.
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Table has two stands, and the base overlaps the chair legs.
I - Artifacting and Color Anomalies
Needs more jpeg, inexplicable artifacts, banding, etc.
Examples of issues that show low quality:
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Oversaturation to the point there’s odd bleeding and it’s almost painful to look at.
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Super high contrast, wobbly lines, bad borders…
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Extreme artifacting around object borders, looks like an MSPaint copy-paste edit.
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Banding, weird artifacts, colour shifts…
J - Text and Lettering Errors
Text doesn’t have to be English or any real language, or even use real characters (see written equestrian, aka “ponish”), unless it’s important to the images. Text that “is meant to be read”, like dialogue in comics, chat messages on a phone screen, or anything else meant to convey important information, should be in a real language and legible.
Even for “ponish”, fake text in an image shouldn’t appear to be inexplicably blurry or artifacted; strange letters are OK, but their style should appear to resemble a consistent legible language and not be just scrawls and squiggles. “Zalgo text” should only be present in images with appropriate themes.
Examples of issues that show low quality:
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Is Stellar confused about Appallosean courting rituals, or concerned Braeburn popped a disk? Who knows. Comics should have legible text.
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The “?” alone would’ve made for a decent image, but the line of dialogue is just scratches.
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For a fashion magazine cover, the focus would be the photo/model, so fake “ponish” language is fine. And the big magazine title text is OK; however, the smaller text is mostly just chicken scratches.
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An image like this would have a heavy text focus, so the text should be fully legible.
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The text almost looks like real letters and words, might even pass as such as a thumbnail. But it isn’t, and is also heavily artifacted.
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Illegible nonsense.
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The sign is in focus, and it both doesn’t make any sense and suffers from artifacting / smudging.