Start with Compare: run your prompt against three models at once
You've got a product. Maybe it's a ceramic mug you hand-pour in your garage, or a batch of leather wallets you source from a supplier in Texas. You need a hero image for the Shopify listing, and you know the stock photo on a white background isn't cutting it anymore. You've heard AI can generate product photos, but you don't know which model to use, and you don't want to spend an hour testing prompts one by one.
This is where Compare saves you time. In Kryotta, Compare lets you run the same prompt against multiple AI image models at once—Stable Image Core, SD 3.5 Large, and any other model you pick—and see the results side by side. You're not guessing which model is better at textures or lighting. You're looking at the proof.
Here's the prompt I used for a candle I sell on Etsy: "Soy wax candle in amber glass jar on wooden table, warm afternoon light from window, shallow depth of field, product photography, soft shadow to the right." I ran it through Stable Image Core and SD 3.5 Large in Compare. Stable Image Core gave me a clean, bright shot with good colour accuracy. SD 3.5 Large gave me richer texture on the wood grain and a more natural shadow, but the candle label was slightly blurred. I picked SD 3.5 Large and made a note to sharpen the label later in Image Studio.
The whole process took three minutes. Without Compare, I would've generated one image, decided it wasn't quite right, changed the model, re-run the prompt, and wasted ten minutes cycling through options. Compare collapses that loop into one click.
Use Auto routing when you're batch-generating product variants
Once you know which model works for your core product shot, you'll probably need variations. Different angles, different backgrounds, seasonal versions for Black Friday or a Valentine's Day collection. This is where Auto routing makes sense.
Auto routing in Kryotta sends your prompt to the model that's fastest and cheapest for the job, based on what you're asking for. If you're generating ten product shots in a row—same prompt, different product names—you don't need to manually pick a model each time. Auto will route simple, high-volume jobs to something like Amazon Nova Lite or Gemini Flash Lite, and save the more expensive models for complex prompts that need fine detail.
I tested this with a batch of twenty ring photos for a jewellery store I help run on Shopify. The prompt was straightforward: "Silver ring with oval turquoise stone on white marble, soft studio lighting, product photography." I used Auto and let Kryotta pick the model for each generation. Nineteen out of twenty came back from Amazon Nova Lite. One—where the turquoise had an unusual cut—got routed to Stable Image Core because Auto detected the complexity. Total cost for the batch was $1.80. If I'd manually picked SD 3.5 Large for every shot, it would've been closer to $6.
The trade-off: Auto won't always give you the absolute best image for every single prompt. It optimises for speed and cost. If you're shooting a hero image for your homepage or a paid Instagram ad, use Compare and pick the model yourself. If you're filling out a product grid with fifty SKUs, Auto is faster and you can always regenerate the two or three that don't land.
Refine in Image Studio instead of re-prompting from scratch
You've got your image. It's 80% there. The lighting is right, the product looks real, but the background is too busy or the shadow is in the wrong spot or there's a weird artefact near the edge of the frame. Your first instinct is to go back, tweak the prompt, and regenerate. Don't.
Image Studio in Kryotta lets you edit the image directly. You can erase parts of the background, adjust brightness and contrast, crop to a different aspect ratio, or add a subtle vignette. It's faster than re-prompting, and you don't lose the parts of the image that already work.
I had a product shot of a leather tote bag on a wooden bench. The bag looked great, but there was a distracting potted plant in the background that I hadn't noticed when I wrote the prompt. Instead of regenerating, I opened the image in Image Studio, used the erase tool to remove the plant, and filled the space with a neutral blur that matched the rest of the background. Took ninety seconds. Re-prompting would've meant starting over, hoping the new image kept the same angle and lighting, and probably running Compare again to check the result.
Image Studio also handles aspect ratio changes without distortion. Shopify product images work best at 1:1 or 4:5, but Instagram feed posts want 4:5 or 1:1, and Stories need 9:16. If you generate at one ratio and then realise you need another, Studio lets you crop or extend the canvas without squashing the product. I've used this to turn a square Shopify hero image into a vertical Story ad by extending the background upward and keeping the product centred.
One thing Studio won't do: add new objects or change the product itself. If you need a different colour variant or a second product in the frame, you're better off generating a new image with an updated prompt. Studio is for refinement, not reinvention.
Write prompts that describe the scene, not just the product
The biggest mistake I see in Shopify sellers' AI product photos is prompts that only name the product. "Red backpack." "Ceramic mug." "Leather wallet." The model has nothing to work with, so it gives you a floating object on a blank background. It's technically a product photo, but it doesn't sell anything.
Good prompts describe the scene around the product. Where is it sitting? What's the light doing? What's the mood? You're not writing a novel—three or four details are enough—but those details turn a generic render into something a buyer can imagine owning.
Here's a before-and-after from a client who sells handmade soap on Etsy. Their original prompt: "Lavender soap bar." The image came back flat, purple blob, no context. I rewrote it: "Handmade lavender soap bar on linen cloth, natural light, soft shadow, rustic wooden table, close-up showing texture." The second image had depth. You could see the grain of the soap, the weave of the linen, the warmth of the wood. It looked like something you'd see in a boutique, not a stock photo site.
If you're stuck, describe the photo as if you're telling a friend what you see. "The mug is sitting on a kitchen counter next to a window. Morning light is coming in from the left. There's a slight shadow on the right side." That's a prompt. Turn those sentences into keywords—"ceramic mug on kitchen counter, morning light from left, soft shadow right, product photography"—and you're done.
Check your images at mobile size before you upload to Shopify
Most of your Shopify traffic is mobile. If your product photo looks great on your laptop but the detail disappears on a phone screen, you've wasted the effort. After you finish in Image Studio, pull the image up on your phone and look at it the way a buyer will: scrolling fast, thumb ready to swipe away.
I generated a product photo of a wristwatch using SD 3.5 Large. On desktop, it was sharp—every link in the band, every marker on the dial. On my phone, the detail turned to mush. The watch face was too small in the frame. I went back to Image Studio, cropped tighter around the watch, and re-exported. The second version held up on mobile.
This step takes thirty seconds and catches problems before they cost you sales. If the product is too small, crop in. If there's too much empty background, tighten the frame. If the colours look washed out on a phone screen, bump the saturation slightly in Studio. You're not aiming for perfection—you're aiming for "good enough that someone scrolling Instagram at a red light will stop."
Run the whole checklist in fifteen minutes, then move on
Here's the full loop. Open Kryotta. Write your prompt. Run it through Compare with two or three models. Pick the best result. If you need batch variants, switch to Auto and generate the set. Open the winner in Image Studio, clean up the background or adjust the crop, export at the right aspect ratio, check it on your phone, upload to Shopify. Done.
The first time you do this, it might take twenty minutes because you're learning where the buttons are. By the third product, you'll be under fifteen. By the tenth, it's muscle memory.
I timed myself last week with a new product—a canvas tote bag I'm adding to my Shopify store. Prompt in Compare: three minutes. Picked SD 3.5 Large, generated the image: one minute. Opened in Image Studio, erased a distracting corner of the frame, adjusted brightness: two minutes. Cropped to 1:1 for Shopify and 4:5 for Instagram, exported both: one minute. Checked on my phone, uploaded to Shopify, wrote the product description while the image processed: eight minutes. Total: fifteen minutes, and I had two platform-ready images.
The alternative is hiring a photographer for $150–$300 per session, waiting for the files, editing them yourself or paying someone else to do it, and hoping you got the shot you needed. Or using your phone and a ring light, which works but takes setup time and doesn't scale when you're adding twenty products a month. AI product photos aren't better than professional photography in every case, but they're faster and cheaper for the bulk of your catalog, and Compare plus Auto plus Studio makes the workflow predictable.
Questions people ask
Do I need to use Compare every time, or can I just stick with one model once I find one I like?
Stick with one model for routine shots if it's working. Use Compare when you're shooting a new product type, a hero image for a campaign, or anything where the stakes are higher than a standard grid photo. Compare is for decisions; Auto is for repetition.
Can I use these images in Facebook and Instagram ads without issues?
Yes, as long as the image follows the platform's ad policies—no misleading claims, no before-and-after health images, no text covering more than 20% of the frame. AI-generated images aren't flagged differently from photos. If it looks like a product photo, it is one.
What if the AI model gets my product colour wrong?
Mention the colour explicitly in the prompt—"navy blue canvas tote" instead of "canvas tote"—and if it's still off, adjust it in Image Studio using the colour balance or saturation tools. Regenerating usually won't fix a colour issue if the prompt was already specific; editing is faster.
How do I know if an image is good enough to upload, or if I should regenerate?
If the product is recognisable, the lighting doesn't look broken, and it holds up on your phone screen, it's good enough. You're not trying to win a photography award. You're trying to stop someone scrolling Shopify search results. If it does that, ship it.
The checklist works because it's a system, not a guess. Compare shows you the options, Auto handles the volume, Studio fixes the rough edges, and you move on to the next product. If you're managing a Shopify store or freelancing for e-commerce clients, this workflow fits into the hour you've already set aside for product uploads. Try it once with a product you're listing this week—open Kryotta, run the prompt through Compare, and see how fast you get to a usable image.
