Quick answer: Instagram Story ads need a 9:16 aspect ratio at 1440 x 2560 pixels. Get it wrong and Meta crops your creative or rejects the upload entirely. Here's how to resize correctly the first time.
---
Why Instagram Story Ad Dimensions Matter
Story ads take over the entire phone screen. That makes exact dimensions non-negotiable.
Fullscreen vertical format requires exact aspect ratio
Stories display edge-to-edge on mobile. Meta requires a 9:16 aspect ratio. The tolerance is just 1%. Miss it and your ad displays incorrectly or gets flagged during review.
Wrong size leads to cropping, distortion, or wasted space
Upload a square or landscape image and Meta stretches or crops it to fit. Your logo gets cut. Your headline disappears. Your product looks warped. None of that helps performance.
Mobile-first viewing demands optimization
Story viewers scroll fast. A blurry or poorly framed ad loses attention in under a second. Correct dimensions are the baseline, not a bonus.
---
Instagram Story Ad Specs from Meta
Per Meta's Ads Guide, the required specs for Instagram Story image ads are:
Recommended resolution: 1440 x 2560 pixels
1440 x 2560 is the gold standard. The minimum acceptable resolution is 1080 x 1920. Always use the highest resolution source file you have.
Aspect ratio: 9:16 (absolute requirement for fullscreen)
Meta's documentation states that 9:16 is the only aspect ratio that displays correctly in fullscreen Stories. All other ratios get cropped or rejected.
File format: JPG or PNG, max 30MB
JPG works well for photos. PNG is better for graphics with text or transparent elements. Files over 30MB will fail to upload.
Minimum width: 500 pixels for quality
Images below 500px wide appear blurry on modern phone screens. Start with the highest resolution original you have.
---
How to Resize Your Instagram Story Ad
Method 1: Using Coinis Revise Smart Resize (fastest)
- Open your ad image in Coinis Revise.
- Select Smart Resize.
- Choose Instagram Story from the placement options.
- Revise resizes the image to 9:16 automatically, keeping your key visual elements in frame.
- Download the resized file or push it straight to a Meta campaign.
No manual cropping. No guessing where to anchor the composition.
Method 2: Using Meta's native Ads Manager preview
Meta Ads Manager shows a placement preview before you publish. Upload your image, switch to the Stories preview, and check for any cropping. If something is cut off, go back and fix the file.
This method shows problems. It does not solve them. You still need to resize the image separately.
Step-by-step walkthrough with expected outcomes
Starting from a 1:1 square image:
- Smart Resize anchors the center and scales to fill 9:16.
- It fills remaining vertical space while keeping the focal point visible.
- Check the output to confirm no important elements are clipped.
Starting from a 16:9 landscape image:
- Smart Resize rotates the orientation and fills vertical space.
- Landscape-to-portrait is a large shift. Review the result carefully.
- If the output looks off, consider regenerating with Image Ads using a vertical-first template instead.
When to regenerate vs. resize
Resize when your source image is already close to 9:16 or is high resolution. Regenerate when your source is landscape or low quality. Coinis Image Ads creates Story-native creatives directly from a product URL, so you skip resizing entirely.
---
Safe Zones and Text Placement
Keep top 250px (14%) and bottom 340px (20%) text-free
Per Meta's Ads Guide, the top 250 pixels (14% of the 1920px standard height) and the bottom 340 pixels (20%) must stay clear of text and logos. Meta overlays the profile icon at the top and the CTA button at the bottom. Anything placed in those zones gets covered.
Reason: avoid covering profile icon and CTA button
A hidden logo wastes your branding. Cut-off text confuses viewers. Both reduce the impact of your ad.
Best practices for logo and headline placement
Keep your logo in the middle-left or middle-right of the frame. Place your headline between 30% and 70% of the image height. That is the safe, fully visible zone.
---
Common Resizing Mistakes to Avoid
Squishing or stretching the image
Dragging a corner without locking the aspect ratio distorts everything. Always lock the ratio at 9:16 before you resize.
Ignoring safe zones
Designers often set type at the top or bottom of an image. That works in other formats. On Stories, it gets covered by Meta's UI overlays. Design to the safe zone every time.
Using the wrong file format or an oversized file
PSD and HEIC files will not upload. Files over 30MB will fail. Convert to JPG or PNG and compress before submitting.
Not previewing in Ads Manager before launch
Always use the Stories placement preview in Meta Ads Manager. What looks correct in your design tool can still crop strangely once uploaded. Preview before you spend.
---
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 is the correct size for an Instagram Story ad?
The recommended size is 1440 x 2560 pixels at a 9:16 aspect ratio. The minimum acceptable resolution is 1080 x 1920 pixels. Images below 500px wide will appear blurry. File formats must be JPG or PNG under 30MB.
What happens if my Instagram Story ad is the wrong size?
Meta either rejects the upload or crops the image to fit the Stories frame. Text and logos near the edges get covered by Meta's profile icon and CTA button overlays. Always resize to 9:16 before uploading to avoid wasted spend on a broken creative.
What are the safe zones for Instagram Story ads?
Per Meta's Ads Guide, keep the top 250 pixels (14% of height) and the bottom 340 pixels (20% of height) free of text and logos. The profile icon sits at the top and the call-to-action button sits at the bottom. Anything placed in those areas will be covered.
Should I resize an existing image or create a new one for Stories?
Resize when your source image is high resolution and close to a vertical format. Regenerate when the source is landscape or low quality. A tool like Coinis Image Ads creates Story-native creatives directly from a product URL, so you skip the resizing step entirely.