Best Collage Sizes for
Social Media in 2026

The definitive guide to optimal collage dimensions for every major social media platform.

Posting a collage on social media? Using the wrong dimensions means your carefully arranged photos get cropped, compressed, or displayed with ugly black bars. This guide covers the optimal collage sizes for every major platform in 2026, so your work always looks its best.

Instagram

Instagram remains the most popular platform for photo collages. Here are the sizes that work best:

  • Square post: 1080 x 1080 pixels (1:1) — The classic Instagram format. Works with all grid layouts and displays consistently in feeds.
  • Portrait post: 1080 x 1350 pixels (4:5) — Takes up more screen space in the feed, giving your collage more visual impact. This is the recommended format for maximum engagement.
  • Story/Reel: 1080 x 1920 pixels (9:16) — Full-screen vertical format. Use vertical strip layouts or stacked arrangements.
  • Carousel: 1080 x 1080 or 1080 x 1350 — Instead of one collage, consider splitting images across multiple carousel slides.

Pro tip: The 4:5 portrait format gets the most real estate in feeds. Use a "Big Top" layout with the hero image spanning the full width at the top and supporting images below.

Facebook

Facebook handles images differently depending on where they're posted:

  • Feed post: 1200 x 630 pixels (1.91:1) — This wide format displays best in the News Feed without cropping.
  • Cover photo: 1200 x 628 pixels — A collage as your cover photo is a great way to showcase multiple moments.
  • Story: 1080 x 1920 pixels (9:16) — Same as Instagram Stories.
  • Square post: 1080 x 1080 pixels — Works well and displays consistently across desktop and mobile.

Pro tip: Facebook compresses images aggressively. Export as PNG for the best quality, or use high-quality JPEG (90%+) to minimize compression artifacts.

Twitter / X

Twitter's image display has evolved, but these sizes work best for collages:

  • Single image: 1200 x 675 pixels (16:9) — Displays fully without cropping in the timeline.
  • Square: 1080 x 1080 pixels — Gets cropped slightly in the timeline but looks great when clicked.
  • Header image: 1500 x 500 pixels (3:1) — Ultra-wide. Use a horizontal strip layout.

Pro tip: Twitter crops images to 16:9 in the feed preview. Keep important content in the center of your collage so nothing essential is cropped in the preview.

Pinterest

Pinterest favors tall, vertical images that stand out in the feed:

  • Standard pin: 1000 x 1500 pixels (2:3) — The ideal Pinterest ratio. Tall enough to command attention without being too long.
  • Long pin: 1000 x 2100 pixels — For detailed step-by-step collages or infographic-style arrangements.
  • Square pin: 1000 x 1000 pixels — Works but gets less visibility than vertical formats.

Pro tip: Pinterest is all about vertical space. Use a vertical strip or L-shape layout. Add text overlays in a design tool after creating the base collage in FreeCollage.

LinkedIn

Professional collages for LinkedIn should be clean and polished:

  • Feed post: 1200 x 627 pixels (1.91:1) — Similar to Facebook's wide format.
  • Square post: 1080 x 1080 pixels — Works well and looks professional.
  • Banner image: 1584 x 396 pixels (4:1) — Ultra-wide format for profile backgrounds.

Pro tip: Use wider spacing, clean backgrounds (white or light gray), and minimal layouts (2-4 images) for a professional look that fits LinkedIn's aesthetic.

TikTok

  • Video/Photo post: 1080 x 1920 pixels (9:16) — Full vertical screen. Use story-format layouts.

Pro tip: TikTok's interface elements (username, caption, buttons) overlay the bottom and right side of the image. Keep important content in the upper-center area.

Quick Reference Table

Here's a summary of the best collage sizes for each platform:

  • Instagram Feed: 1080 x 1350 (4:5 portrait)
  • Instagram Story: 1080 x 1920 (9:16)
  • Facebook Feed: 1200 x 630 (1.91:1)
  • Facebook Cover: 1200 x 628
  • Twitter/X: 1200 x 675 (16:9)
  • Pinterest: 1000 x 1500 (2:3)
  • LinkedIn: 1200 x 627 (1.91:1)
  • TikTok: 1080 x 1920 (9:16)

General Tips for Social Media Collages

  1. Always export at full resolution. Platforms will compress your image; starting with a high-quality file minimizes quality loss.
  2. Test on mobile first. Most social media is consumed on phones. If your collage looks good on a small screen, it'll look great everywhere.
  3. Keep it simple. Social feeds are noisy. Collages with 3-4 clear images outperform cluttered 9-photo grids.
  4. Use consistent spacing. 6-10px spacing looks clean on social media. Zero spacing can make images bleed together at small sizes.
  5. Consider the platform's crop. Many platforms crop images in the feed preview. Keep critical content toward the center.
Create a Social Media Collage