Midjourney Aspect Ratio Not Working Fix

Updated June 2026

Is your Midjourney prompt ignoring your desired aspect ratio, leaving you with incorrectly sized images? This guide provides straightforward solutions to common aspect ratio problems.

What this problem means

Is your Midjourney prompt ignoring your desired aspect ratio, leaving you with incorrectly sized images? This guide provides straightforward solutions to common aspect ratio problems.

Double-Check Your Aspect Ratio Syntax

The most frequent reason for “Midjourney aspect ratio not working” is a syntax error. Midjourney is precise, and a misplaced character can invalidate your command. Start here if your image isn’t the desired shape.

Why This Happens:

• Incorrect Hyphens: Using -ar instead of --ar.
• Missing Space: No space between --ar and the ratio, or within the ratio.
• Incorrect Placement: --ar is not at the very end of your prompt.
• Invalid Ratio Format: Using decimals or non-integers (e.g., 1.5:1) instead of whole numbers (e.g., 3:2).

Fix It:

1. Verify Hyphens: Always use --ar (two hyphens).
2. Check Spacing: Ensure a space after --ar and standard spacing within the ratio (e.g., --ar 16:9).
3. Place at End: --ar X:Y must be the absolute last element of your prompt.
4. Use Integers: Ensure your ratio (X:Y) consists of whole, positive numbers. Common ratios: 1:1, 3:2, 4:3, 16:9, 9:16, 2:3, 3:4.

Understand Midjourney Model Version Limitations

Different versions of Midjourney’s AI models handle aspect ratios with varying flexibility. What works in one version might be ignored in another. If your “Midjourney aspect ratio not working” issue persists, your model could be the cause.

Why This Happens:

• V5/Niji Restrictions: Older models (V5) and Niji models have limited aspect ratio support, often snapping to common ratios or imposing dimension limits.
• V6 Flexibility: Midjourney V6 offers significantly more control, accurately generating even unusual ratios.

Diagnostic checklist before you escalate

Image generation failures usually come from prompt moderation, account limits, unsupported settings, browser state, or a temporary queue problem. Save the prompt and parameters before retrying. Then simplify one variable at a time so you can identify whether the trigger is the wording, reference image, model, aspect ratio, or service availability.

1. Try a short neutral prompt with default dimensions and no reference image.
2. Remove artist names, protected characters, ambiguous age terms, and sensitive wording.
3. Confirm the selected model supports the requested resolution, ratio, and editing feature.
4. Check usage credits, generation history, service status, and account notices.
5. Test a private browser window or another network if the interface itself is frozen.

Verify that image generation is genuinely working

Once Midjourney Aspect Ratio Not Working produces an image, do not immediately restore every advanced setting. Generate a second neutral test with the same known-good configuration. Confirm that the result opens at full size, downloads correctly, and appears in generation history. This distinguishes a real recovery from a cached thumbnail or one lucky queue attempt.

Add complexity back in stages: first the intended prompt, then the aspect ratio, reference image, style controls, seed, or editing mode. When the failure returns, the last addition is your strongest lead. Save the working prompt and parameters as a baseline so future tests start from a configuration you know the current model accepts.

• Two simple generations complete without duplicate charges.
• The full-resolution file opens and downloads.
• Generation history records the jobs correctly.
• Advanced controls are restored one at a time.
• The final prompt complies with the provider’s current rules.

Keep a short note of the working configuration and the date of the test. Products, models, browser versions, limits, and safety policies change over time, so a previously successful workaround may later become obsolete. Prefer current official documentation over old forum instructions, and reverse temporary diagnostic changes once testing is complete. This gives you a reliable baseline without leaving extensions disabled, security controls weakened, or experimental settings enabled indefinitely. Recheck the baseline after major updates before assuming an older failure has returned for the same reason. When possible, save a screenshot or sanitized log from the successful test so you can compare future behavior without relying on memory alone during later troubleshooting.

When none of the fixes work

Repeat the smallest failing action once and record the exact local time and time zone. Note the product, model or feature, account plan, browser or app version, operating system, and whether the same action works in a private window, on another device, or on another network. This evidence is much more useful than saying the tool is “still broken.”

Use the provider’s official support channel. Include a screenshot with sensitive information removed and list the steps already tested. For developer tools, add sanitized request and response details, correlation IDs, and SDK versions. Never send passwords, one-time codes, API keys, session cookies, private repository contents, or complete payment information.

Frequently asked questions

Should I reinstall the app immediately?

No. Check service status, session, browser, and network first. Reinstall only when the failure is isolated to the installed app.

What should I send to support?

Include the exact error, timestamp and time zone, device, browser or app version, and the troubleshooting steps already tested. Remove secrets and personal data.

Bottom line: Work from the least disruptive test to the most specific one. Confirm service health, isolate session and network variables, then escalate with clean evidence instead of repeating the same failing action.