> Quick answer: Google feed ads require different image sizes per campaign type. Responsive Display needs three aspect ratios. Demand Gen adds a 9:16 vertical. Performance Max targets 1500x1500 for products. Wrong dimensions get rejected at upload.
Google feed ads don't accept one size. Each campaign type has its own required dimensions, and uploading the wrong file means instant rejection or badly cropped creatives.
Understanding Google Feed Ad Formats
Three campaign types place ads into Google's feed inventory, and each one has different creative rules.
Responsive Display Ads (feed, sidebar, partner sites)
Responsive Display Ads run across Gmail, YouTube sidebars, and Google's Display Network partners. You supply images and Google assembles the ad for each placement automatically. That flexibility means you need multiple aspect ratios from the start.
Demand Gen Campaigns (YouTube, Discover, Gmail)
Demand Gen targets YouTube, Discover, and Gmail feeds. It supports vertical images built for scrolling, including YouTube Shorts full-screen placements. Plan on supplying both landscape and vertical assets for full coverage.
Performance Max (across Google Network)
Performance Max runs across all Google placements at once. It combines your images, headlines, and product feed. Google picks the best combination for each placement automatically, so image quality matters everywhere.
Image Dimensions by Campaign Type
Per Google's Ads Help Center, each campaign type enforces specific pixel dimensions at upload. Wrong specs mean instant rejection.
Responsive Display: landscape, square, portrait specs
- Landscape (1.91:1): 1200 x 628 pixels. Minimum accepted: 600 x 314.
- Square (1:1): 1200 x 1200 pixels.
- Portrait (4:5): 1200 x 1500 pixels.
You can upload up to 15 images across these three aspect ratios. More variety gives Google more combinations to test.
Demand Gen: 9:16 vertical, 1:1 square, 16:9 horizontal
- Vertical (9:16): Minimum 720 x 1280, for YouTube Shorts. Delivers a full-screen experience.
- Square (1:1): 1200 x 1200 recommended.
- Horizontal (16:9): Standard widescreen for Discover and Gmail feeds.
Safe zones apply to the 9:16 format, similar to native Shorts content. Keep key visuals and text away from the edges to avoid cropping.
Performance Max product feed images
Google recommends 1500 x 1500 pixels or higher for best performance. The current minimum is 500 x 500. Starting January 31, 2027, Google Merchant Center will enforce that minimum strictly, per the Merchant Center Help documentation.
File size limits and format requirements
All Google Ads images cap at 5120 KB. Performance Max allows up to 5 MB. Accepted formats are .jpg and .png only. Files over the limit are rejected at upload with no fallback.
How to Resize Manually in Google Ads
Manual resizing is possible. It multiplies your workload fast.
Exporting and uploading in Google Ads Editor
Google Ads Editor manages assets offline. But it does not resize images for you. You export your asset, resize it in a separate tool, then re-import it. Repeat for every format you need.
Using native image editor or third-party tools
Google Ads includes a basic crop tool inside the asset library. It handles simple trims but not intelligent reframing. Most advertisers fall back to Photoshop or Canva to hit exact specs, which adds steps and version control headaches.
Why manual resizing creates quality and compliance issues
Cropping a 1200 x 628 image down to 1200 x 1500 portrait cuts your subject or pushes text out of the safe zone. Stretching the canvas degrades quality. Each format needs its own composition review. That is three separate edits per image, minimum, before you upload a single asset. Scale that across a product catalog and the time adds up fast.
Why Coinis Revise Saves Time
Smart Resize in Coinis Revise outputs platform-ready dimensions without the manual back-and-forth.
Smart Resize handles all Google feed formats at once
Upload one image. Select your target dimensions. Smart Resize produces a version sized to your exact spec. No manual cropping. No guessing about aspect ratios. Export and upload to Google Ads directly.
Maintains image quality and composition
Coinis Revise uses cutting-edge AI models to reframe the canvas intelligently. Your subject stays centered. The background extends naturally where needed. No stretching, no pixelation, no quality loss from repeated exports.
Automatic safe zone and text placement
After resizing, use Edit text on image to reposition copy inside the safe zone for each format. Starting from a low-res source. AI Upscale brings it up to spec before you resize. The result is a clean, upload-ready asset for every Google feed placement you need.
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
What image size does Google require for feed ads?
It depends on the campaign type. Responsive Display Ads need landscape (1200x628), square (1200x1200), and portrait (1200x1500). Demand Gen adds a 9:16 vertical (minimum 720x1280) for YouTube Shorts. Performance Max recommends 1500x1500 for product images. All files must be .jpg or .png under 5120 KB.
Can I upload the same image for all Google feed ad placements?
No. Google enforces different aspect ratios per campaign type. Uploading a single size means Google either rejects the asset or auto-crops it, often cutting your subject or text. You need at least three versions for Responsive Display alone.
What happens if my image is too small for Google Ads?
Google rejects it at upload. For Responsive Display, the minimum landscape size is 600x314. For Performance Max product images, the current minimum is 500x500, with stricter enforcement starting January 31, 2027.
Does Coinis publish ads directly to Google Ads?
Not yet. Direct publishing to Google Ads is on the Coinis roadmap. Today, Coinis Revise handles all your creative resizing, editing, and copy adjustments. You then export the finished assets and upload them to Google Ads yourself.