Is 1:1 aspect ratio dead for Meta ads in 2026?

[binbin21]

Hey everyone,

Back in the day, 1:1 (square) was basically the go-to for Facebook and Instagram feeds. It was easy, clean, and worked everywhere.

But now I’m seeing more and more people pushing 4:5 (vertical) as the “new default” since it takes up more screen real estate and arguably performs better.

So I’m wondering:

• Is 1:1 basically outdated at this point?
• Should we be switching fully to 4:5 for Facebook + IG feed in 2026?
• Or is it still worth testing / keeping 1:1 in the mix?
• Are you guys designing creatives only for 4:5 now and letting Meta crop the rest?

For context, I obviously know Stories/Reels are always 9:16, that part is clear. It’s just the feed placements that feel a bit uncertain right now.

Would love to hear what’s actually working for you right now

 

[Jenny 15]

as my opinion, 1:1 is safe bcs it is default screenshot, then u also can test it
4:5 is the trend now, => recommend to use

 

[Rikki_Tavi]

Hey everyone,

Back in the day, 1:1 (square) was basically the go-to for Facebook and Instagram feeds. It was easy, clean, and worked everywhere.

But now I’m seeing more and more people pushing 4:5 (vertical) as the “new default” since it takes up more screen real estate and arguably performs better.

So I’m wondering:

• Is 1:1 basically outdated at this point?
• Should we be switching fully to 4:5 for Facebook + IG feed in 2026?
• Or is it still worth testing / keeping 1:1 in the mix?
• Are you guys designing creatives only for 4:5 now and letting Meta crop the rest?

For context, I obviously know Stories/Reels are always 9:16, that part is clear. It’s just the feed placements that feel a bit uncertain right now.

Would love to hear what’s actually working for you right now

View attachment 526800

Honestly, this is great news. Things just got way better.

 

[pes7md]

for me, for ads to be cheaper, you need to add reels to the places where your ads should show. that makes 4:5 the recommended but even at that, you have to be careful cos i have seen some ads with the 4;5 size with the key contents of the cut of from what can be seen when the ads show.

 

[ellarvfjodie]

I think both ratios are fine and effective.

 

[binbin21]

as my opinion, 1:1 is safe bcs it is default screenshot, then u also can test it
4:5 is the trend now, => recommend to use

I'm using a 1:1 ratio for the news feed, 4:5 for Instagram, and 9:16 for the news reel.

 

[binbin21]

Honestly, this is great news. Things just got way better.

Currently, a 1:1 ratio is recommended for the news feed and a 9:16 ratio for the reels.

 

[binbin21]

for me, for ads to be cheaper, you need to add reels to the places where your ads should show. that makes 4:5 the recommended but even at that, you have to be careful cos i have seen some ads with the 4;5 size with the key contents of the cut of from what can be seen when the ads show.

The 4:15 ratio is often cropped on news feeds, so we should use a mix of ratios to suit our needs.

 

[binbin21]

I think both ratios are fine and effective.

We do all three of them, there’s still a lot placements that require 1:1, so pushing just 4:5 and 9:16 makes those look cut. We usually do 1:1 for Facebook Feeds, 4:5 for Instagram. Meta says that it supports 4:5 for Feeds on Facebook, but they get cut a lot, sometimes they appear fine, sometimes are cropped to square.