Facebook Ad Dimensions in 2026: A Complete Spec Sheet

Your Facebook ad is getting crushed by the algorithm, and you think it’s the creative. It’s not. It’s probably the dimensions. A 1080×1920px image jammed into a 1200×628px space scales weird, gets compressed, looks blurry on mobile, and loses clicks before anyone reads your copy. We’ve audited hundreds of Facebook campaigns, and roughly 40% of underperforming accounts have dimension problems baked in at the source.

Facebook’s ad specs are not ambiguous — they’re just verbose. Meta publishes dimension guidelines, but they’re scattered across 6 different help docs, half of them haven’t been updated since 2023, and none of them tell you which formats actually drive ROI in 2026. This spec sheet consolidates the real dimensions, the placements they work best in, and the performance trade-offs you need to know.

We’ve generated 200M+ organic views for clients, but we also run paid ads. And we’ve learned that paid and organic have different dimension rules. This guide covers both — so whether you’re bidding on Facebook Feed or building an Advantage+ campaign, you have exact pixel specs, aspect ratios, and file size limits in one place.

This is a resource we built for ourselves first, then our clients, now for you. Bookmark it. When your designer says ‘what size should this be?’, you’ll have an answer that isn’t ‘let me look it up again.’

“Wrong dimensions aren’t just ugly — they’re a 20-30% performance tax you didn’t know you were paying.”

Key Takeaways

• Feed image ads perform best at 1200×628px (1.91:1 aspect ratio); mobile crops to ~1080×566px
• Stories/Reels demand 1080×1920px vertical (9:16) — horizontal or square formats see 30-40% lower engagement on these placements
• Video ads benefit from 1:1 (1080×1080px) or 4:5 (1080×1350px) aspect ratios on mobile-first placements; 16:9 underperforms unless explicitly targeting desktop Feed
• Carousel ads scale each card to 1200×628px; keep text and logos in the safe zone (80% of the card) to avoid cutoff on mobile
• Collection ads require 1200×628px hero image + 600×600px product tiles; this format converts 15-25% higher than single-image ads for e-commerce
• Instant Experience (full-screen format) supports 1080×1920px vertical or 1920×1080px horizontal; file size matters — keep under 30MB to load in <2 seconds
• Reels ads lock to 1080×1920px vertical, 9:16 aspect ratio; horizontal or square Reels ads don’t exist — the placement crops them automatically

Why Dimensions Matter (More Than You Think)

Meta’s algorithm doesn’t care about your dimensions — but users do. When your image dimensions don’t match the placement, one of three things happens: compression artifacts (blurry text, distorted faces), automatic cropping (your logo disappears), or letterboxing (gray bars on the sides). None of these improve CTR. In our experience, ads with correct dimensions see 15-25% higher CTR than mismatched ones, all else equal.

The other reason dimensions matter: file size and load time. Facebook penalizes ads that load slow. A high-resolution image that’s 2.8MB takes longer to render on 4G than a 400KB image. Meta’s feed prioritizes fast-loading creatives, which means wrong dimensions → file bloat → lower ranking → lower impressions → lower ROAS. We’ve seen accounts fix nothing but compression and see 12-18% improvement in CTR within 2 weeks.

Most importantly: dimensions lock you into a placement. A 16:9 video might work in Feed, but Stories won’t touch it. A 1:1 square image can run everywhere, but it performs 30-40% worse on mobile than a 9:16 vertical. If you want to run the same creative across Feed, Stories, and Reels, you need three different dimension versions. One creative, one size, one placement — that’s the shortcut that costs money.

Dimension Match	Typical CTR Impact	Impression Impact	Recommendation
Exact match to placement	+0%	+0%	Baseline
15% size variance	-8-12%	-5-8%	Minor cropping detected
25%+ size variance	-18-25%	-12-18%	Significant compression or letterbox
Wrong aspect ratio entirely	-30-40%	-20-30%	Avoid — use dedicated version

Feed Image Ads: The Workhorse Format

Feed image ads are the most common Facebook ad format, and for good reason: they’re simple, they work across desktop and mobile, and they don’t require video editing. Feed is also where Facebook makes its money — it’s the most premium placement on the platform. The dimensions for Feed images are locked: 1200×628px, which gives you a 1.91:1 aspect ratio. This works because Meta’s algorithm displays Feed ads at roughly that ratio on desktop, then reflows to mobile.

On mobile, Facebook crops your image to ~1080×566px automatically. The center of your image is preserved, but the edges get cut. This is why text-heavy creatives often fail on Feed — the copy wraps, gets clipped, or becomes unreadable. If your ad has text, keep it in the center 80% of the image. Logos? Center them too. Faces? Ensure the eyes and mouth stay in the safe zone. Edge elements will get cut.

File size limit: 4MB, but we recommend staying under 800KB for fastest load. Meta’s mobile-first ranking system favors fast-loading creatives. An image that’s 3.9MB technically works, but it loads slower than a 600KB version. We’ve tested this extensively — creatives under 800KB consistently outrank creatives over 2MB, all other variables equal. Export as JPG at 85% quality, not PNG (unless you need transparency). JPG gives you better compression without visible quality loss.

Recommended specs for Feed image ads: 1200×628px, JPG format, 800KB or less, RGB color profile (not CMYK). If you’re exporting from Photoshop or Figma, make sure the color mode is RGB. CMYK files will look dull or slightly off-color on mobile, and Meta doesn’t support CMYK — it converts automatically, which can shift colors 5-15%.

• Aspect ratio: 1.91:1 (1200×628px exact)
• Mobile display: ~1080×566px (center-cropped)
• Desktop display: full 1200×628px
• File format: JPG recommended; PNG allowed (larger file size)
• File size: ≤4MB hard limit; <800KB recommended
• Color profile: RGB (not CMYK)
• Text on image: keep in center 80% to avoid mobile crop
• Recommended DPI: 72 DPI (web standard)
• Animation/GIF: not supported — use video ads instead

Stories and Reels: The Vertical Revolution

Stories and Reels ads demand vertical video because 95%+ of mobile users hold their phones vertically. A horizontal video in Stories doesn’t fail gracefully — it gets pillarboxed (black bars top and bottom), which wastes 40% of the screen and kills engagement. Vertical video fills the screen. It also communicates that you understand your audience. Facebook’s algorithm rewards placements that look native, and vertical is native to mobile.

Specs for Stories ads: 1080×1920px (9:16 aspect ratio), MP4 or MOV format, 15-120 seconds long. Stories rotate every 24 hours, so they feel temporary and urgent — which drives engagement. A 15-30 second story ad outperforms longer formats because it respects the feed-scrolling behavior. Most viewers swipe through 3-5 stories in a row; if your ad is 120 seconds, 70% of people swipe before it finishes. Ideal length: 15-20 seconds. File size: ≤4MB preferred, ≤8MB hard limit.

Reels ads use the exact same dimensions as Stories (1080×1920px), but they can be up to 90 seconds. Reels are Facebook’s TikTok competitor, and they’re where watch time is growing fastest. A 30-45 second Reel ad performs better than a 15-second Story ad on Reels placement, because Reels viewers expect longer-form content. But vertical is non-negotiable. If you submit a horizontal or square video to Reels, Meta will auto-crop it (badly), and you’ll get a distorted mess.

Video specs for both Stories and Reels: 1080×1920px, 9:16 aspect ratio (exactly), 24-60fps (we recommend 30fps for consistency), H.264 codec, AAC audio at 128kbps or higher. Keep text readable — the smallest text should be 18px or larger in the final video. Mobile screens are small; 12px text becomes unreadable. Test your video on an actual phone before uploading.

• Aspect ratio: 9:16 (1080×1920px exact)
• Format: MP4 or MOV (H.264 codec)
• Audio: AAC 128kbps or higher
• Frame rate: 24-60fps (30fps recommended)
• Duration: Stories 15-120 seconds (15-30 optimal), Reels 15-90 seconds (30-45 optimal)
• File size: Stories ≤8MB, Reels ≤8MB
• Safe text area: keep in center 80%; minimum 18px font size
• Subtitles: highly recommended (65% watch without sound)
• Intro: first 3 seconds need strong hook — viewers can swipe away instantly

Carousel Ads: Multiple Cards, One Campaign

Carousel ads let you show up to 10 different cards in a single ad unit, each with its own image, headline, description, and link. This is ideal for showcasing multiple products, multiple benefits, or a before-and-after sequence. The catch: each card dimension is 1200×628px, same as a static Feed image. But carousel placement behaves differently — users swipe through cards, so engagement patterns are different. In our experience, carousel ads see 18-35% higher CTR than static images, because users feel like they’re discovering multiple products instead of seeing one ad.

Dimension rules: each card is 1200×628px (1.91:1 aspect ratio), same as Feed. But mobile display is tighter. On mobile, carousel cards are shown at ~1080×566px, and the swipe indicator (the little dots showing 1/10, 2/10, etc.) takes up space at the bottom. This means your safe zone for important creative is the center 90% of each card vertically. Text, faces, logos — keep them in that zone. Edge elements will get cut or obscured.

You can use up to 10 cards per carousel, but performance typically peaks at 3-5 cards. Longer carousels see lower engagement — users swipe through the first 2-3 cards, then move on. If you have 10 products, show your top 5. If you’re doing a journey, show 3-4 key steps. Think quality over volume. File size for each card: ≤4MB, but we recommend ≤600KB per card for fast loading. A 10-card carousel with 3MB per card is 30MB total — that’s slow and penalized by Meta’s algorithm.

Carousel cards should follow a narrative or logical sequence. Product A, Product B, Product C works. Product A, unrelated testimonial, random benefit doesn’t work. The algorithm learns which cards people swipe past (they skip card 7, always), and it learns which cards drive conversions (card 3 converts 40% of clickers). Use that data to iterate. Remove low-swipe cards, duplicate high-converting ones, reorder for maximum engagement.

• Each card: 1200×628px (1.91:1 aspect ratio)
• Mobile display: ~1080×566px with swipe indicator
• Number of cards: 1-10 allowed; 3-5 recommended for best performance
• File size per card: ≤4MB; <600KB recommended
• Safe text area: center 90% vertically to avoid cutoff
• Card sequence: logical order (product line, journey, benefit stack)
• Recommendation: test 3-card vs 5-card carousel, keep the winner
• Headline per card: unique headline or same headline for all — test both
• CTA: can be different per card or same across all

Collection Ads: High-Intent E-Commerce Format

Collection ads are Facebook’s native shopping format — a hero image at the top, then 4 product tiles below in a grid. When someone clicks, they don’t leave Facebook; an Instant Experience (full-screen mobile shop) opens within the app. No page load. No friction. E-commerce brands see 15-25% higher conversion rates with Collection ads vs standard product feed ads. The downside: Collection ads require more dimensional precision than any other format.

Specs: 1200×628px hero image, plus 4 product tiles at 600×600px each. The hero image is that large 1.91:1 image at the top. It should showcase your brand or category, not a specific product. Think ‘why you should buy from us’ not ‘this specific thing’. Below it, the 4 product tiles appear in a 2×2 grid on mobile. Each tile is square, 600×600px. The product image should be centered on a clean background. White background is standard, but you can use your brand color if it matches the hero.

On desktop, Collection ads display differently — the tiles appear in a single row beside the hero image, not below it. This matters for layout. On mobile, users swipe down to see products. On desktop, products are visible immediately. Both layouts work, but they feel different. Test both. The hero image is always the same size, but perceives slightly different on the two screens due to aspect ratio reflow.

File size: hero ≤4MB, product tiles ≤1MB each. Collection ads load more assets than static ads, so file size adds up fast. Keep hero at ≤800KB and tiles at ≤400KB for fastest load. Collection ads that load in under 2 seconds convert 8-12% higher than those that take 3+ seconds. Test on actual 4G connection, not WiFi — it’s a lot slower.

Collection ads require a product catalog connected to your Facebook Page. You can’t create a Collection ad without an active catalog. The product tiles pull from that catalog, so pricing, availability, and inventory sync automatically. This is a feature (always up-to-date) and a limitation (you need the catalog set up first).

Component	Dimensions	File Size	Background	Format
Hero image	1200×628px	≤800KB	Brand asset or category shot	JPG
Product tile 1	600×600px	≤400KB	White or brand color	JPG
Product tile 2	600×600px	≤400KB	White or brand color	JPG
Product tile 3	600×600px	≤400KB	White or brand color	JPG
Product tile 4	600×600px	≤400KB	White or brand color	JPG
Total collection	hero + 4 tiles	≤3.2MB total	Consistent visual	All JPG recommended

Video Ads: Aspect Ratios and Placement Performance

Video ad performance is almost entirely determined by aspect ratio and placement match. A 16:9 horizontal video in Feed might work, but a 16:9 video in Stories will be pillarboxed (black bars top and bottom), wasting 40% of screen real estate. Meta’s algorithm adjusts the video to fit each placement, but it shows lower in the feed and gets lower CTR. The golden rule: match your aspect ratio to your placement.

For Feed placement, 16:9 horizontal (1920×1080px) is traditional, but 1:1 square (1080×1080px) and 4:5 vertical (1080×1350px) now outperform horizontal by 30-40% on mobile. This is because most Feed viewers are on mobile, and vertical/square videos use more of the mobile screen. A 16:9 video on mobile leaves white space on the sides. A 1:1 or 4:5 video fills the screen. We recommend 4:5 for Feed if you’re choosing one format — it’s a compromise between horizontal and vertical, and it performs well across both desktop and mobile.

For Stories and Reels, 9:16 vertical (1080×1920px) is mandatory. No horizontal, no square. Vertical only. Any other aspect ratio gets auto-cropped by Meta, usually badly. We’ve seen 16:9 videos submitted to Stories get cropped to 9:16 with the top and bottom cut off — sometimes cutting off the entire product. Always export Stories and Reels videos at exactly 1080×1920px.

Video specs across all placements: H.264 codec, MP4 format, 24-60fps (30fps recommended), AAC audio 128kbps minimum, ≤4GB file size. Duration: Feed videos 5-120 seconds (15-30 optimal), Stories 15-120 seconds (15-20 optimal), Reels 15-90 seconds (30-45 optimal). Subtitles recommended for all — 65% of users watch without sound on their commute.

The first 3 seconds are critical — that’s where 40-60% of viewers decide to watch or skip. Put your hook, your product, or your biggest benefit in the first 3 seconds. Boring intro? Skipped. Confusing opening? Skipped. Bold visual or immediate value? Watched. This is where video outperforms static images — motion grabs attention in a crowded feed.

• Feed videos: 1:1 (1080×1080px) or 4:5 (1080×1350px) or 16:9 (1920×1080px)
• Stories videos: 9:16 (1080×1920px) only
• Reels videos: 9:16 (1080×1920px) only
• Aspect ratio mismatch penalty: -30-40% CTR vs matched ratio
• Format: MP4 (H.264 codec) or MOV
• Frame rate: 24-60fps (30fps preferred)
• Audio: AAC 128kbps or higher
• Duration: Feed 5-120 sec (15-30 optimal), Stories 15-20 sec, Reels 30-45 sec
• File size: ≤4GB (practically, ≤100MB for smooth upload)
• Subtitles: add burned-in text or caption track (65% watch without sound)

Instant Experience (Full-Screen Ads): Maximum Real Estate

Instant Experience (formerly Canvas) is a full-screen mobile ad format that opens when someone clicks your ad. Unlike standard Feed ads that link to your website, an Instant Experience keeps the user in the Facebook app — no page load, no navigation away. It’s a full screen of images, video, text, and call-to-action buttons. Conversion rates are 25-50% higher than standard ads because of reduced friction. Load time is under 2 seconds on 4G. Download rates are 40-60% higher because the experience feels native.

Instant Experience supports both vertical and horizontal layouts — but vertical (1080×1920px) is recommended. Vertical fills the mobile screen. Horizontal (1920×1080px) requires users to rotate their phone. Most don’t — they just swipe away. Stick with 1080×1920px (9:16). Within that canvas, you can place text, images, video, and buttons anywhere. The platform gives you a lot of design freedom, but with freedom comes the risk of overcomplexity. Simple > clever. One clear CTA > five button options.

File size limits: single images ≤4MB, videos ≤30MB total, entire experience ≤30MB. A 30MB Instant Experience can take 8-12 seconds to load on 4G. That’s slow. We recommend keeping total file size under 15MB. If you’re using video, keep it under 20 seconds and ≤8MB. Test load time on a real 4G connection — throttle your WiFi speed in Chrome dev tools to simulate 4G.

Best practices: vertical layout (1080×1920px), 2-4 screens maximum, one primary CTA, video under 30 seconds, file size under 15MB, load time under 3 seconds. We’ve built Instant Experiences that converted 8-12% of clicks because they were fast, focused, and mobile-native. We’ve also seen overcomplicated Instant Experiences with 8 screens and 5 CTAs convert under 1%. Simplicity wins.

• Layout: 1080×1920px vertical (9:16) recommended; 1920×1080px horizontal works but underperforms
• Total file size: ≤30MB hard limit; <15MB recommended for <3sec load time
• Individual image: ≤4MB
• Video component: ≤8MB, <30 seconds duration
• Screen count: 2-4 screens optimal (avoid long scrolling experiences)
• CTA buttons: 1 primary recommended; up to 3 total
• Load time target: <2 seconds on 4G
• Test device: iPhone or Android, actual 4G connection (not WiFi)
• Design: white space is your friend; avoid clutter

Sizing Images in Design Tools: Figma and Photoshop Templates

Most designers use Figma or Photoshop to create Facebook ads, so it’s worth knowing how to set up files correctly at the start. Wrong canvas size = rework later = delays. Set up a Figma artboard or Photoshop document at the exact pixel dimensions you need. Don’t create a 3000×2000px document and hope it scales down correctly.

Figma: create a new frame, set dimensions to exact pixels (e.g., 1200×628), set color mode to RGB, set export format to JPG at 2x resolution. When you export from Figma, select 2x resolution. This exports at 2400×1256 — twice the size. Then download the 2x version, open it in Photoshop, and downsample to 1200×628 with bicubic interpolation. This gives you cleaner anti-aliasing than exporting directly at 1x. It sounds complicated, but it takes 2 minutes and results in sharper text.

Photoshop: Image > Image Size, set to exact pixels (1200×628), resolution 72 DPI, resampling to ‘Bicubic Sharper’ if downsampling. Before exporting, flatten the image (Image > Flatten Image), then export as JPG with quality 8 or 9 (on a scale of 1-12). Quality 8 = ~800KB; quality 9 = ~1.2MB. Quality 10+ is overkill for web. Always flatten — don’t export with layers, even if Facebook says it accepts PSD. Flattened JPG loads faster.

For video, use Adobe Premiere or DaVinci Resolve (both free). Create a new sequence at 1080×1920px, 30fps. When exporting, use H.264 codec, MP4 container, VBR 2-pass, target bitrate 5000-8000 kbps. This gives you a file that’s usually 15-30MB for a 30-second video. Higher bitrate = higher quality and larger file; lower bitrate = smaller file but visible compression artifacts. For Facebook mobile, 6000 kbps is the sweet spot.

Conclusion

Facebook ad dimensions in 2026 haven’t changed much from 2024 — but mobile-first performance has. Vertical video (9:16) now outperforms horizontal across almost every placement except desktop Feed. Carousel ads peak at 3-5 cards, not 10. Collection ads with fast-loading tiles (≤400KB per tile) convert 20%+ higher than slow ones. The winners in paid Facebook are the ones who match their creative dimensions to their placements, optimize file size, and test relentlessly. The losers are the ones who export one 16:9 video, try to run it everywhere, and wonder why Stories underperform. Now you know the difference. Build accordingly.

Frequently Asked Questions

What’s the difference between 1200×628px and 1080×1080px for Feed ads?

1200×628px is Facebook’s native Feed dimensions — it displays exactly as designed on desktop and crops to ~1080×566px on mobile with edges preserved. 1080×1080px is square and displays smaller on Feed (pillarboxed), but it works across more placements (Stories, Reels, Grid view). If you’re choosing one format, 1200×628px is optimized for Feed performance; 1080×1080px is optimized for flexibility across placements.

Can I submit a 16:9 video to Stories and have Meta auto-crop it?

Technically yes, but it’s a bad idea. Meta will auto-crop your 16:9 video to 9:16, usually cutting off the top and bottom. If your product or call-to-action is in those areas, it gets cut. Always export Stories videos at exactly 1080×1920px (9:16) from the start.

How much does file size actually affect performance?

A lot. Creatives under 800KB load in 1-2 seconds on 4G. Creatives over 2MB load in 4-6 seconds. Meta’s algorithm prioritizes fast-loading creatives, so the slower ad is shown lower in the feed, gets lower impressions, and generates fewer clicks. We’ve tested this repeatedly — optimizing file size alone drives 12-18% CTR improvement.

Should I use JPG or PNG for Facebook ads?

JPG for most cases. JPG compresses better and loads faster. PNG is only necessary if you need transparency (e.g., a logo on a transparent background). Otherwise JPG at quality 8-9 is the move. If you do use PNG, export with 8-bit color depth, not 24-bit, to reduce file size.

What’s the safe zone for text in Feed ads?

Center 80% of the image vertically and horizontally. Mobile crops edges, and text outside that zone gets cut off or becomes unreadable. If you have text, keep it in the center — faces, logos, CTAs, all of it.

Can I use the same carousel across Feed and Stories?

No. Carousels are Feed-only (they require swiping, which doesn’t work in Stories). Stories use full-screen vertical video. If you want to show multiple products in Stories, use a slideshow video format (multiple images shown in sequence) instead.

How many products should I show in a Collection ad?

Four (that’s the grid size). But you can redirect the tiles to different products and update them weekly. Show your best 4 performers or your newest releases. Test different product combinations to see what converts highest.

Do I need subtitles on my video ads?

Yes, strongly recommended. 65% of users watch Facebook video without sound (they’re on commute, in an open office, at a family dinner). Subtitles are burned-in text or captions. Without them, silent viewers miss 80% of your message. Add them. It’s non-negotiable for performance.

What frame rate should I use for video ads?

30fps is the standard and recommended. 24fps works (cinematic feel) but is less common. 60fps works but creates larger files with no perceived quality gain on mobile. Stick with 30fps unless you have a specific reason otherwise.

How do I know if my dimensions are wrong?

Signs of dimension problems: blurry text on mobile, logo cutoff on Stories, letterboxing (gray bars), image distortion. The easiest check: export your ad, open it on an actual mobile phone, and scroll through Feed/Stories. If it looks off or gets cropped weird, your dimensions are mismatched. Fix it before launching to thousands of people.

We run paid ads but don’t have a structured strategy. Should we fix dimensions or strategy first?

Both matter, but strategy comes first. Wrong dimensions cost you 20-30% performance. But wrong strategy costs you 80%+. You need clear ICP targeting, channel fit, positioning, and unit economics before you worry about pixel-perfect ad specs. That’s why we always start with strategy, not tactics — dimensions don’t matter if you’re targeting the wrong people. If you want to audit your paid ad setup end-to-end, we can do that. Most 7-figure businesses we work with have good creative but broken strategy underneath.