Facebook Reels Cover Size & Thumbnail Guide

Your Reels cover is the first thing people see in the Reels grid, on your profile, and in the feed. It determines whether someone taps to watch or keeps scrolling. But Facebook Reels covers have a unique challenge: they display at two different aspect ratios depending on where they appear. Fullscreen is 9:16. The grid is approximately 3:4. The same cover image gets cropped differently in each context.

If you don't design for both views, your text gets cut off in the grid, your subject is cropped at the forehead, or your carefully placed logo disappears behind UI elements. This guide covers the exact sizes, crop behavior, safe zones, and best practices for Facebook Reels covers.

Reels Cover Size and Aspect Ratio

The correct Facebook Reels cover size is 1080×1920 pixels at a 9:16 aspect ratio. This matches the fullscreen vertical format that plays when someone taps on your Reel.

When you publish a Reel, Facebook lets you choose a frame from the video or upload a custom cover image. Always upload a custom cover — auto-selected frames are rarely the strongest visual. A well-designed cover image dramatically improves tap-through rate in the grid.

Verify your cover dimensions with the image size checker before uploading.

How Facebook Crops Reels Covers

The core challenge with Reels covers is the dual-crop problem. Your 9:16 cover image appears in two very different contexts:

Fullscreen view (9:16)

When someone taps your Reel, the cover displays at its full 9:16 size. No cropping occurs at this stage. However, Facebook overlays UI elements on top:

• Top: your profile picture, name, and follow button (~250–290 px)
• Bottom: caption text, like/comment/share buttons, and audio info (~250–290 px)
• Right side: engagement buttons (like, comment, share) floating over the image

Grid view (~3:4)

In the Reels tab, your profile grid, and recommendation feeds, covers are displayed at approximately 3:4 — significantly shorter than 9:16. Facebook achieves this by center-cropping the top and bottom of your 9:16 image.

• On a 1080×1920 image, the grid crops roughly 240 px from the top and 240 px from the bottom
• The visible area in the grid is approximately 1080×1440 px (the center portion)
• The grid also overlays the Reel duration, view count, and sometimes your name at the bottom of the thumbnail

This means content near the top and bottom of your cover — headlines, logos, faces — may be fully visible in fullscreen but completely hidden in the grid. Use the Reels thumbnail preview tool to check both views before publishing.

Safe Zones for Facebook Reels Covers

Because covers appear at two different crops, you need to design for two overlapping safe zones.

Grid safe zone (the tighter constraint)

The grid crops ~240 px from the top and ~240 px from the bottom of your 9:16 image, then overlays view count and duration at the bottom of the thumbnail. The grid safe zone is:

• Vertical: center 75% — roughly Y: 240 to Y: 1680 on a 1080×1920 canvas
• Bottom caution: the lowest 60–80 px of the grid view may show view count or duration text
• Effective grid safe area: Y: 240 to Y: 1600 (1360 px of usable height)

Fullscreen safe zone

Fullscreen shows the full 9:16 image but overlays UI elements. The fullscreen safe zone is:

• Vertical: center 60–70% — roughly Y: 290 to Y: 1630
• Horizontal: avoid the right 80 px (engagement button column)

The overlap: design for this zone

The area that's safe in both views is approximately Y: 290 to Y: 1600 — about 1310 px of vertical space in the center of your 1080×1920 canvas. Place all headlines, faces, logos, and key visuals within this range.

Use the safe zone visualizer to check both crop zones on your image.

Common Reels Cover Mistakes

Reels Cover Best Practices

• Always upload a custom cover at 1080×1920 — never rely on auto-selected frames. A custom cover is your single biggest lever for improving grid click-through rate. Verify dimensions with the image size checker.
• Design for the grid first — the grid is where users decide whether to tap. Design your cover so it works at the ~3:4 crop, then verify it also looks good fullscreen. The grid is the harder constraint.
• Center everything vertically — the grid crops top and bottom. The fullscreen overlays top and bottom. The center of the image is the only area that's guaranteed visible in every context.
• Use a large, clear subject — grid thumbnails are small. A face, product, or bold text element needs to fill a significant portion of the frame to be recognizable at thumbnail scale.
• High contrast and bold colors — the Reels grid is dense. Muted, low-contrast covers blend in. Saturated colors, strong subject-background separation, and bold visual hooks stand out.
• Keep text to 3–5 words — if you add text, make it big, bold, and minimal. Long sentences are unreadable at grid scale. Use the cover for a visual hook and let the caption handle details.
• Pre-crop to fit — if your source image isn't 9:16, crop it before uploading with the image crop tool. Non-9:16 images may display with bars or unexpected cropping.
• Preview both views before publishing — always check the fullscreen and grid crop with the Reels thumbnail preview tool before hitting publish.

For Reels ads

• Tighter bottom safe zone — Reels ads add a CTA button and headline below the standard UI, covering an additional 50–80 px at the bottom. Keep content in the center 60% of the vertical space.
• The cover is your ad's first impression — in autoplay-off contexts and the Reels grid, the cover image determines whether someone engages. Treat it like a standalone ad creative.
• Match the organic aesthetic — Reels ads that look like organic Reels outperform polished banner-style creatives. Keep the cover feeling native to the platform.

Tools to Preview and Fix Reels Covers

Check your cover in both views before publishing. A 15-second preview prevents a broken thumbnail that costs you taps and views.

Facebook Reels Cover FAQ

Related Facebook Guides