- Google rejects blurry or undersized images — upscaling before upload avoids rejection and protects Ad Strength.
- Responsive Display Ads require at least 300 × 300 px (square) or 600 × 314 px (landscape).
- Performance Max recommends 1200 × 1200 px square images for best results.
- Google's built-in upscaling only applies to Performance Max and responsive display ads.
- Pre-upscaling with AI gives you quality control across all Google campaign types before anything goes live.
- Coinis Revise AI Upscale lets you inspect the result before it reaches Google.
A low-res image won't just look bad in a Google ad. It can get rejected before it ever serves. Here's how to fix it fast.
Why Image Quality Matters in Google Ads
Google enforces image quality at upload. Blurry or undersized assets get flagged or rejected before they ever reach an audience.
Google's minimum image size requirements by campaign type
Per Google's Ads Help Center, specs vary by campaign type.
Responsive Display Ads: Square minimum is 300 × 300 px. Landscape minimum is 600 × 314 px. Maximum file size is 5 MB. JPG or PNG only.
Performance Max: Requires a minimum of 7 images across three aspect ratios. Square minimum is 300 × 300 px. Landscape minimum is 600 × 314 px. Recommended sizes are 1200 × 1200 px (square) and 1200 × 628 px (landscape).
These are floors, not ceilings. Upload the highest resolution you have.
How blurry images hurt Ad Strength and click-through rates
Google's advertising policies explicitly prohibit blurry or unclear images. Flagged images must be replaced with high-quality versions. Beyond policy compliance, low-quality visuals drag down your Ad Strength score. That score reflects how well your creative assets work together. Lower Ad Strength generally means fewer competitive auctions.
When you need to upscale before uploading
If your image falls below the minimum spec, you must upscale before upload. If it meets the minimum but sits far below the recommended size, upscaling still helps. A 300 × 300 px asset will not render as sharply as a 1200 × 1200 px one in a live feed.
Option 1: Use Google's Built-In Image Upscaling
Google offers a native upscaling enhancement. It handles the process automatically for select campaign types.
Which campaign types support auto-upscaling
Per Google's documentation on image upscaling enhancement, the feature applies to Performance Max asset groups and responsive display ads only. It does not cover all campaign types. Uploaded display banners and Shopping campaigns are not included.
How Google's AI resizes and sharpens your image
Google uses AI to resize and sharpen images to meet minimum campaign requirements while maintaining image integrity. The process runs during asset review. You don't set parameters or preview the output. Google applies the enhancement and moves on.
Limitations and when it may not be enough
You can't inspect the result before the ad goes live. If your source image is very low resolution, the upscaled output may still appear soft. And if you run a campaign type outside Performance Max or responsive display, the enhancement simply doesn't apply. That's when pre-upscaling is the better path.
Option 2: Pre-Upscale with Coinis Revise (AI Upscale)
Pre-upscaling before upload puts quality in your hands, not Google's algorithm. You see the result. You decide before anything reaches the platform.
How AI Upscale works with low-res images
Coinis Revise includes an AI Upscale capability. Upload your low-res image. Cutting-edge AI models analyze existing detail and reconstruct a sharper, higher-resolution version. The output is a clean file you can review before uploading anywhere.
Why pre-upscaling gives you quality control
You see the output before upload. If it doesn't look right, you can adjust or start from a better source file. Pre-upscaled images also work across all Google campaign types, including uploaded display banners and Shopping, where Google's built-in tool doesn't apply.
Step-by-step: upscale, then upload to Google
- Open Coinis Revise. Upload your low-res image.
- Select AI Upscale. Let the AI process the file.
- Download the upscaled result. Confirm it looks sharp.
- Open Google Ads. Navigate to your asset group or ad creative.
- Upload the new file. Confirm it is JPG or PNG and under 5 MB.
Best Practices for High-Quality Google Ad Images
Good specs and sharp visuals work together. Get both right before the asset leaves your hands.
Image specifications checklist
Confirm these before every upload:
- Square: minimum 300 × 300 px, recommended 1200 × 1200 px
- Landscape: minimum 600 × 314 px, recommended 1200 × 628 px
- File format: JPG or PNG
- Maximum file size: 5 MB
- Important content sits within the center 80% of the image, per Google's safe area guidance
File formats and sizing tips
JPG compresses well for photography. PNG handles graphics and text overlays better. For Performance Max, Google recommends at least one image without text overlays per aspect ratio. Keep the main subject centered and clear of edges.
Testing and performance monitoring
Upload multiple image variations per aspect ratio. Ad Strength updates as you add assets. After launch, track CTR and conversion rate in Google Ads reporting. Replace underperforming images with fresh upscaled versions when results plateau.
Or skip the steps.
Coinis Revise edits any ad image with AI. Move text. Change text. Swap colors. Erase objects. Translate to any language. One click each.
No design skills. No Photoshop. One click.
15 AI tokens a month. No credit card.
Frequently Asked Questions
Does Google automatically upscale all ad image types?
No. Google's image upscaling enhancement only applies to Performance Max asset groups and responsive display ads. Other campaign types, including uploaded display banners and Shopping, require you to upload a properly sized image yourself.
What file formats does Google Ads accept for image assets?
Google Ads accepts JPG and PNG files. The maximum file size for image assets is 5 MB.
Will AI upscaling fix a very low-resolution image completely?
AI upscaling reconstructs detail from what exists in the original file. Starting from a higher-resolution original always gives the best output. But even a modest source image will look sharper after upscaling than if uploaded as-is.
What is the safe area for Google Ads image assets?
Google recommends keeping important content within the center 80% of your image. Elements outside that zone may be cropped or obscured depending on where the ad renders.