- Instagram Feed ads perform best at 4:5 vertical (1440 × 1800 px) or 1:1 square (1440 × 1440 px).
- Upload JPG or PNG only, under 30 MB, for Instagram Feed image ads.
- Primary text is capped at 125 characters; headlines at 40 characters per Meta's Ads Guide.
- One bold visual with minimal image text stops the scroll faster than busy designs.
- Preview on mobile in Meta Ads Manager before publishing to catch cropping issues.
- Coinis Image Ads generates correctly sized, on-brand Instagram creatives from a product URL.
Instagram Feed Ad Dimensions & Technical Requirements
Get the specs right first. A slightly off-size image risks cropping or rejection.
Recommended image sizes and aspect ratios
Per Meta's Ads Guide, Instagram Feed image ads support aspect ratios from 1.91:1 to 4:5. Two formats dominate most campaigns:
- 4:5 vertical — 1440 × 1800 px. Takes up more screen real estate on mobile. Recommended for most Feed placements.
- 1:1 square — 1440 × 1440 px. Clean and balanced. Works well for product shots or brand-focused creatives.
Meta applies a 3% aspect ratio tolerance, so minor rounding will not get your ad rejected.
File format and maximum file size
Upload JPG or PNG only. Maximum file size is 30 MB. Aim below 5 MB in practice. Smaller files load faster, and fast loads matter on mobile feeds.
Mobile optimization considerations
Most Instagram users scroll on a phone. Design at full resolution from the start. Preview at a narrow width before you export. What looks sharp on a desktop monitor can lose detail and readability on a 375 px screen.
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Core Design Principles for Instagram Ads
Correct specs get your ad approved. A strong design makes it perform.
Stay on-brand and concept-driven
Meta's Business Help Center recommends Instagram ads be on-brand, concept-driven, and well-crafted. Your ad should look like it belongs to your brand at a glance. Use consistent colors, fonts, and visual style. Concept-driven means one clear idea per ad. Not two. Not three. One.
Use high-quality, eye-catching visuals
Blurry images fail on Instagram. Start with crisp, well-lit photos or sharp graphics. Bold, brand-aligned colors stop the scroll faster than muted palettes. Avoid stock imagery that looks generic. Original visuals build faster recognition.
Minimize text and prioritize clear imagery
Instagram is a visual platform. Meta recommends keeping image text minimal and strategic. Let the image carry the message. Copy supports it. If a viewer needs to read a paragraph to understand your ad, the image is not doing its job.
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Step-by-Step: Design Your Instagram Ad
Choose your format (square or vertical)
Pick 4:5 vertical for mobile-first Feed placements. Pick 1:1 square if your product or concept sits better in a balanced frame. Decide before you open your design tool. Starting on the wrong canvas wastes time.
Create or source your image
Start at 1440 × 1800 px for vertical or 1440 × 1440 px for square. Use original photos or graphics where possible. Place your main subject in the center of the frame, away from edges. Avoid important visual elements at the very top or bottom of a vertical image where UI can overlap.
Add text strategically (headline and primary text limits)
Instagram Feed ads allow up to 125 characters of primary text and up to 40 characters for the headline. Use that space deliberately. Primary text delivers your offer or hook. The headline reinforces the message. Keep both tight and direct.
Do not overlay a wall of text on the image itself. One short phrase works. A full sentence or more does not.
Test and preview before publishing
Use Meta Ads Manager's ad preview tool before you publish. Check the mobile Feed preview specifically. Confirm all text is readable. Confirm no key visual element lands inside a cropped or overlapping zone.
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Common Design Mistakes to Avoid
Low-quality or blurry images
Instagram's feed is built for sharp visuals. Upscaling a small image to fill a 1440 × 1800 px canvas produces blur. Start at the recommended resolution, not below it.
Overcrowding with text
More text on the image means less visual impact. One message per ad. If you need additional context, put it in the primary text field, not on the creative.
Poor color contrast or readability
Light text on a light background and dark text on a dark background both fail readability checks. Your offer and CTA must be legible at a glance on a small screen. Run a quick contrast check before you export.
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How Coinis Can Speed Up Your Ad Design
Designing Instagram ads from scratch takes time. Getting dimensions right, sourcing visuals, writing copy, and previewing across placements adds up fast.
Coinis Image Ads generates on-brand Instagram ad creatives from your product URL. Paste the URL. Coinis reads your brand colors, fonts, and product details through Brand Profile, then outputs campaign-ready images sized correctly for Instagram Feed.
No design software needed. No spec sheet to memorize. Brand Profile carries your brand context into every creative automatically, so every ad looks like yours from the first output.
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Or let Coinis do it.
From a product URL to a live Meta campaign. AI-generated creatives. On-brand copy. Direct publish to Facebook and Instagram. Real performance reporting. All in one platform.
Start free. Upgrade when you're ready.
15 AI tokens a month. No credit card.
Frequently Asked Questions
What is the best image size for an Instagram Feed ad?
The recommended size for a 4:5 vertical Instagram Feed ad is 1440 × 1800 px. For a square 1:1 ad, use 1440 × 1440 px. Both are JPG or PNG, under 30 MB.
How much text can I put on an Instagram ad?
Instagram Feed ads support up to 125 characters of primary text and up to 40 characters for the headline. Keep text on the image itself minimal. Let the visual carry the message.