![How to Turn Midjourney Images into Print-Ready Files [CMYK & Bleed]](/blog/thumbnails/midjourney-print.webp)
Trying to send a Midjourney image to a print shop usually gets stuck right here
You want to use a visual made in Midjourney on a flyer or poster. But the print shop’s submission guide says “submit in CMYK,” “3 mm bleed required,” “PDF/X-4 format.”
“…what is all that?” is the normal reaction. This article explains, from scratch, how to convert a Midjourney image into data a print shop will accept.
A Midjourney image can’t be submitted as-is
There are three reasons.
The resolution may be insufficient
Print needs 350 dpi or higher, but Midjourney’s default output is 1024×1024 px. Print that at A4 and it’s only about 123 dpi. Upscaling (U1–U4) can raise it to a maximum of 2912×4096 px, but that can still be insufficient for B2 posters or large formats. For a quick reference of the pixel counts needed per print size, see the table in Why AI Images Look Blurry When Printed — and How to Fix It.
| Midjourney output size | Resolution at A4 |
|---|---|
| Default (1024 px) | ~123 dpi (NG) |
| After upscale (2048 px) | ~247 dpi (caution) |
| Max upscale (2912 px+) | ~350 dpi (OK for A4) |
It’s output in RGB
Midjourney images are RGB. Most print shops require CMYK submission, so conversion is needed. Submit in RGB and colors can shift during automatic conversion.
There’s no bleed
Midjourney is purely an image-generation tool, so naturally it has no print bleed (3 mm larger than the finished size). Without it, you’ll get rejected.
The conventional fix, and its cost
Photoshop can solve everything — resolution adjustment, CMYK conversion, adding bleed, PDF export — but it requires an Adobe subscription from 3,280 yen/month, plus the effort of learning each step. Combined with your Midjourney subscription, the monthly cost adds up.
DecoTecoPop: three steps, all in the browser
With DecoTecoPop, you can build submission data just by uploading the image you downloaded from Midjourney. No install, no sign-up.
Step 1: Upload the upscaled image
Download an image you upscaled to U4 in Midjourney and upload it to DecoTecoPop. It supports PNG, JPEG and WEBP up to 60 MB. The key is to use an image exported at the largest size possible.
Step 2: CMYK conversion and color check
One click converts RGB → CMYK. A ΔE (Delta E) color-difference report shows the color difference before and after. Midjourney produces many vivid images, so neon and fluorescent colors can shift a lot in conversion. Checking here prevents color surprises after submission.
Step 3: Generate bleed → export PDF
It adds 3 mm bleed automatically and downloads as PDF/X-4 (with crop marks; export is free while we’re in beta). You can upload it straight into a print shop’s submission form.
→ Convert your Midjourney download with DecoTecoPop (PNG / JPEG / WEBP — up to 60 MB — no sign-up)
Tips for generating print images in Midjourney
Decide the aspect ratio first
Put your print size’s aspect ratio in the prompt — --ar 3:4 (A4 portrait), --ar 4:3 (A4 landscape) — so you avoid cropping later and losing resolution.
Upscale with U4 before exporting
Don’t download it small; always upscale before saving. That one extra step directly affects print quality. Making use of Midjourney’s upscale features (standard, high-res upscale, and so on) lets you export even larger.
A generation plan per print size in Midjourney
Decide “what size am I printing” first, and what you need to do on the Midjourney side falls into place.
| Print size | Recommended aspect ratio | Generation / upscale target |
|---|---|---|
| Business card / card | --ar 3:2 (landscape) / --ar 2:3 (portrait) | Default + U4 is enough |
| Postcard | --ar 2:3 (portrait) | Up to U4; upscale if needed |
| A4 flyer | --ar 3:4 (portrait) / --ar 4:3 (landscape) | U4 + high-res upscale recommended |
| A3 / poster | --ar 3:4 and others, matched to print size | Max upscale required; enlarge separately if short |
The key is to generate with an --ar close to your print’s aspect ratio. Crop heavily afterward and you lose that many pixels, dropping the resolution. Build it at the ratio you want from the start, and you can use it large with nothing wasted.
Midjourney is bad at adding text
Midjourney is great at generating visuals, but bad at rendering text (titles, dates, and the like) cleanly. For the text on a flyer or poster, it’s more reliable to add it separately afterward than to have the AI draw it. With DecoTecoPop, you can layer decorative text over your generated background image and turn the whole thing into submission data at once.
FAQ
Q. Which phones and browsers does it work on?
CMYK conversion, bleed, and PDF creation for your image work in recent phone browsers (Safari or Chrome). If you also want to use the text-decoration editor, you’ll need a device that supports WebGPU (iOS 26 or later in Safari on iPhone, or Chrome on Android).
Q. Is it OK to use a Midjourney-generated image on a commercial flyer?
Whether Midjourney allows commercial use depends on your plan. The free plan does not permit commercial use; paid plans generally do, but the terms can change, so check the official site. Note too that separate caution is needed if the AI has unintentionally depicted a real character or brand. There are no restrictions on the DecoTecoPop side.
Q. What ΔE value is within acceptable range?
In the print industry, ΔE under 3 is generally considered “virtually indistinguishable to the human eye.” ΔE 3–10 is “a subtle difference,” and ΔE 10+ is “clearly different.” DecoTecoPop’s report shows the degree of color change along this standard.
Q. Can I submit no matter which Midjourney version I used?
Yes. Regardless of the version used to generate it (V5, V6, niji, and so on), as long as you have an exported image (PNG, JPEG), it can be converted into submission data. The art style changes with the version, but what you do to prepare for print (resolution, CMYK, bleed) is the same.
Q. Can I use a transparent (no-background) Midjourney image?
Yes. If you upload a transparent PNG, it’s composited onto a white background before processing. If you want to keep the transparency and layer it over a different background, composite it in your design tool before exporting.
Turning a visual made in Midjourney into data you can send to a print shop, without Photoshop — that one simple thing has, until now, been surprisingly hard.