Why Image Sizes Matter More Than Most Creators Think
Every social media platform has specific image dimension requirements. When you upload an image that does not match those requirements, the platform automatically crops or scales it to fit — and that auto-processing almost always produces a worse result than uploading the correct size yourself.
Platform auto-cropping is unpredictable. An image cropped on desktop may show differently on mobile. A product photo with the product centered may crop to show only the background. A person's face may be cut off by a crop you cannot see before posting.
Platform compression is the other issue. All social platforms apply lossy compression to images on upload to reduce storage and bandwidth costs. Images uploaded at the correct dimensions receive less aggressive compression than images that need to be scaled before compression. This means correctly sized images look sharper and more professional than incorrectly sized ones, even at equivalent original quality.
Use Social Image Resizer to resize any image to the exact correct dimensions for any platform in seconds. For Instagram specifically, use Instagram Post Resizer.
Instagram Image Sizes (2026)
| Content Type | Dimensions | Aspect Ratio |
|---|---|---|
| Square post | 1080 × 1080 px | 1:1 |
| Portrait post (recommended) | 1080 × 1350 px | 4:5 |
| Landscape post | 1080 × 566 px | 1.91:1 |
| Story / Reel | 1080 × 1920 px | 9:16 |
| Carousel (each slide) | 1080 × 1080 px or 1080 × 1350 px | 1:1 or 4:5 |
| Profile photo | 320 × 320 px (upload 600×600+) | 1:1 |
Instagram Pro Tips: The 4:5 portrait ratio (1080×1350) takes up significantly more screen real estate in the feed than square images — it occupies roughly 65% more vertical space. This means longer visible presence as users scroll, leading to higher stop-scroll rates. For feed posts, portrait is generally the strongest format. For carousels, keep all slides the same aspect ratio — mixing portrait and square causes Instagram to crop all slides to the most restrictive format.
TikTok Image Sizes (2026)
| Content Type | Dimensions | Notes |
|---|---|---|
| Video (standard) | 1080 × 1920 px | 9:16 vertical is required |
| Video cover / thumbnail | 1080 × 1920 px | Same as video dimensions |
| Profile photo | 200 × 200 px (upload 400×400+) | Circular crop on display |
| Image / slideshow post | 1080 × 1350 px or 1080 × 1920 px | 4:5 or 9:16 |
Use Resize Video for TikTok to convert any video to TikTok's required 9:16 vertical format in seconds, including automatic cropping and padding options.
YouTube Image Sizes (2026)
| Content Type | Dimensions | Max File Size |
|---|---|---|
| Video thumbnail | 1280 × 720 px | 2MB |
| Channel art / banner | 2560 × 1440 px | 6MB |
| Profile photo | 800 × 800 px | 2MB |
| YouTube Shorts thumbnail | 1080 × 1920 px | 2MB |
Use YouTube Thumbnail Resizer to resize any image to the exact 1280×720px YouTube thumbnail specification. Use Image Compressor to reduce thumbnail file size below the 2MB limit if needed.
Facebook, Pinterest, and LinkedIn Image Sizes
Facebook:
- Feed post image: 1200 × 630 px (1.91:1)
- Story: 1080 × 1920 px (9:16)
- Cover photo: 820 × 312 px (desktop) — note: displays differently on mobile at 640×360 effective area
- Profile photo: 170 × 170 px on desktop (upload 400×400+ for quality)
- Reel: 1080 × 1920 px (9:16)
Pinterest:
- Standard Pin (recommended): 1000 × 1500 px (2:3 — tall portrait)
- Square Pin: 1000 × 1000 px (1:1)
- Story Pin: 1080 × 1920 px (9:16)
- Board cover: 800 × 450 px (16:9)
Pinterest's 2:3 tall portrait ratio is important because taller Pins take up more space in the feed, increasing visibility and click-through rate. The 1000×1500px format is the strongest performer across most niches.
LinkedIn:
- Post image: 1200 × 627 px (recommended) or 1080 × 1080 px (square)
- Article cover image: 1920 × 1080 px (16:9)
- Profile photo: 400 × 400 px
- Cover / banner photo: 1584 × 396 px
- Carousel (document) slides: 1080 × 1080 px or 1080 × 1350 px
Quick Reference: The Most Common Image Sizes by Aspect Ratio
If you remember nothing else from this guide, remember these four aspect ratios — they cover 90% of all social media image needs:
- 9:16 (vertical, full screen): 1080×1920px — used for Stories, Reels, TikTok, and Shorts on every platform
- 4:5 (vertical, feed): 1080×1350px — the recommended Instagram feed post ratio; also works on Facebook
- 1:1 (square): 1080×1080px — universal for feed posts across Instagram, Facebook, LinkedIn, and Pinterest
- 16:9 (horizontal/landscape): 1920×1080px — standard for YouTube thumbnails (1280×720) and horizontal video cover images
Use Social Image Resizer to convert any image to any of these aspect ratios with automatic padding or cropping options to prevent unwanted content loss.
Conclusion
Uploading correctly sized images is a small habit with a noticeable impact on how professional your content looks and how effectively the platform displays it. Bookmark this guide as a reference, and use the resize tools to prepare images for each platform before posting.
The most important sizes to memorise: 1080×1920 for all Stories and vertical video content; 1080×1350 for Instagram feed posts; 1280×720 for YouTube thumbnails; and 1000×1500 for Pinterest. Everything else follows from these four.
