Guide4 min read
How to Plan an Ad Test Budget From Your Margin
Work through a practical ad test budget using order value, variable costs and target acquisition cost, then decide what your first test can tell you.
Vibiz Team11 min read
The recommended Facebook feed ad size is 1440 x 1800 pixels at a 4:5 ratio. Stories and Reels ads on Facebook and Instagram use 1440 x 2560 pixels at 9:16, and carousel cards in the Facebook feed use 1:1 images of at least 1080 x 1080 pixels. Instagram feed images use the same size as the Facebook feed; both are Meta placements booked in the same Ads Manager.
Every spec on this page comes from Meta's Ads Guide and Meta Business Help Center pages listed under Sources, read on November 9, 2026. Meta changes these specs from time to time, so check the guide before a large production run.
| Placement | Aspect ratio | Recommended size (pixels) | Image file | Video file and length |
|---|---|---|---|---|
| Facebook Feed | 4:5 | 1440 x 1800 | Up to 30 MB | Up to 4 GB, 1 second to 241 minutes |
| Instagram Feed | 4:5 image, 9:16 video | 1440 x 1800 image, 1080 x 1920 video | Up to 30 MB | Up to 4 GB, 1 second to 60 minutes |
| Facebook Stories | 9:16 | 1440 x 2560 | Up to 30 MB | Up to 4 GB, 1 second to 3 minutes |
| Instagram Stories | 9:16 | 1440 x 2560 | Up to 30 MB | Up to 4 GB, 1 second to 60 minutes |
| Facebook Reels | 9:16 | 1440 x 2560 | Up to 30 MB | Up to 4 GB, no maximum length |
| Instagram Reels | 9:16 | 1440 x 2560 | Up to 30 MB | Up to 4 GB, 0 seconds to 15 minutes |
| Carousel, Facebook Feed | 1:1 | At least 1080 x 1080 | Up to 30 MB per card | Up to 4 GB, 1 second to 240 minutes |
| Carousel, Instagram Feed | 4:5 with images only, 1:1 with video | At least 1080 x 1080 | Up to 30 MB per card | Up to 4 GB, 1 second to 2 minutes |
| Facebook Marketplace | 1:1 | At least 1080 x 1080 | Up to 30 MB | Image specs only here |
| Facebook Search Results | 1.91:1 to 1:1 | At least 1080 x 1080 | Up to 30 MB | Image specs only here |
| Facebook Right Column | 1:1 | At least 1080 x 1080 | Not listed | Image specs only here |
Image ads are JPG or PNG files. Video ads are MP4, MOV or GIF files, except Instagram Reels and Ads on Facebook Reels, which take MP4 or MOV.
For a single-image ad in the Facebook feed, Meta recommends a 4:5 image at 1440 x 1800 pixels. The file can be up to 30 MB. The minimum is 600 pixels wide and, at 4:5, 750 pixels tall, with a 3% aspect ratio tolerance.
Feed video uses the same 4:5 ratio and 1440 x 1800 resolution. It can run from 1 second to 241 minutes, weigh up to 4 GB and must be at least 120 x 120 pixels.
Meta's aspect ratio page says feed placements accept both 1:1 and 4:5 for images and video, and recommends vertical 4:5 for single-image ads in the Facebook feed. The same page tells advertisers that images and videos for mobile should cover as much of the screen as possible, which is what the taller 4:5 frame does.
The Ads Guide lists the same image size for the Instagram feed: 4:5 at 1440 x 1800 pixels, up to 30 MB. Instagram accepts shapes from 4:5 (400 x 500) to 1.91:1 (191 x 100), with a minimum width of 500 pixels and a 1% tolerance.
For video in the Instagram feed, the guide lists 9:16 at 1080 x 1920 pixels, running from 1 second to 60 minutes, up to 4 GB and at least 250 pixels wide. Meta's safe zone page adds two rules for this placement: 9:16 video ads in the Instagram feed follow the same safe zone as Stories and Reels, and 1:1 or 4:5 ads should keep the bottom and side edges free of key elements, text and logos.
Meta's own pages disagree on one point. The aspect ratio help page recommends 1:1 for single-image ads in the Instagram feed, while the Ads Guide lists 4:5. Both shapes are accepted in feeds, so a 4:5 image that also serves the Facebook feed is a sound default.
Stories on Facebook and Instagram use a full-screen 9:16 frame at 1440 x 2560 pixels for both images and video. Images can be up to 30 MB and videos up to 4 GB.
Messenger Stories use a different safe zone: roughly 14% (250 pixels) at the top and 20% (340 pixels) at the bottom.
Reels ads also use a 9:16 frame at 1440 x 2560 pixels.
Meta says Instagram Reels ads should not contain licensed music (it suggests original audio or royalty-free tracks from the Meta Sound Collection), face or camera effects, GIFs, product tags, edit lists or special boxes in the file container, or reels published before October 15, 2021.
Ads on Facebook Reels is a separate placement. Its image form, called overlay ads, shows a single static image over reel content, as a banner at the bottom or a sticker near the top. It takes a 1:1 image of at least 1080 x 1080 pixels; the video version is 1:1 at 1440 x 1440 and runs 4 to 15 seconds.
Meta gives the same guidance for 9:16 Stories and Reels ads on both apps: leave roughly 14% of the top, 35% of the bottom and 6% of each side free of text, logos and other key elements, so the profile icon and the call-to-action button don't cover them.
On a 1440 x 2560 frame, that works out to about 358 pixels at the top, 896 pixels at the bottom and 86 pixels on each side. The headline, the product and the offer belong in the area between.
Ads Manager has a Safe zone guardrail you can switch on. It marks the safe area with a yellow overlay on your creative.
A carousel holds 2 to 10 cards, and Meta lists a landing page URL as required.
Meta recommends keeping every card in the same ratio, all 1:1 or all 4:5, to avoid automatic adjustments.
These placements show smaller or squarer images.
Meta lists these as text recommendations, separate from the technical requirements:
| Placement | Primary text (characters) | Headline (characters) | Description (characters) |
|---|---|---|---|
| Facebook Feed | 50-150 | 27 | Not listed |
| Instagram Feed | 125 | 40 | Not listed |
| Facebook Stories | 125 | 40 | Not listed |
| Instagram Stories | 125 | Not listed | Not listed |
| Facebook Reels | 40 | 55 | Not listed |
| Instagram Reels | 44 | Not listed | Not listed |
| Carousel, Facebook Feed | 80 | 20 | 18 |
| Marketplace and search results | 125 | 40 | 30 |
| Right column | Not listed | 40 | Not listed |
Instagram feed ads can also carry up to 30 hashtags.
One ad usually runs in several placements, so write the start of the primary text and the headline to make sense at the shortest length in your mix. The free ad mockup shows the same copy in the Facebook feed, Instagram feed, Stories, Reels and a carousel, so you can see where it gets cut before you publish.
Meta also asks that video files contain no edit lists or special boxes in the file container.
Mostly, yes. Both feeds list 4:5 at 1440 x 1800 pixels for images, and Stories and Reels on both apps use 9:16 at 1440 x 2560 pixels. What changes is the text and the video length. The recommended headline is 27 characters in the Facebook feed and 55 in Facebook Reels, and Instagram Reels recommends 44 characters of primary text.
So two files cover most of Meta: a 4:5 version for feeds and a 9:16 version for Stories and Reels. Add a 1:1 version if you run carousels, Marketplace or the right column.
Once the sizes are right, the ad creative grader and the creative review checklist help with what goes inside the frame.
This page is informational and reflects our own product and workflow recommendations, not professional or legal advice.
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