Social Media Image Sizes — Every Dimension for 2026

Every social media platform has an algorithm that evaluates content quality before deciding how widely to distribute it. Image dimensions are a core quality signal. When you upload an image that does not match the platform's recommended size, one of two things happens: the platform either crops it — cutting off important visual information — or adds letterboxing (black bars), which makes your post look unprofessional in the feed.

Both outcomes reduce engagement. Research consistently shows that posts with properly sized, high-resolution images earn more likes, comments, shares, and saves. On Instagram, for example, portrait-format posts (1080 × 1350 px at 4:5) take up more vertical screen space in the feed, which increases the time users spend looking at your content and boosts the algorithm's ranking of your post.

Getting dimensions right is especially important for cover photos, banners, and profile pictures, because these are the first things visitors see when they land on your profile. A blurry or improperly cropped Facebook cover photo or LinkedIn banner can undermine trust before a potential follower even reads your bio.

If you manage multiple accounts or post across several platforms at once, the challenge compounds. A single image rarely works everywhere without resizing. That is why tools like cross-posting and AI-powered image generation exist — they help you produce platform-optimised visuals without spending hours in a design editor.

Instagram: Use 4:5 portrait ratio (1080 × 1350 px) for feed posts to maximize screen real estate. For Reels and Stories, always use 9:16 (1080 × 1920 px). Keep text and key elements away from the top and bottom 250 pixels of Stories to avoid overlap with UI elements. Schedule your posts for optimal times using an Instagram scheduler.

Facebook: Feed images at 1200 × 630 px display best in the News Feed. Cover photos render differently on desktop and mobile, so keep critical text and logos within the centre safe zone. Use PNG for graphics with text and JPG for photographs. Pair your visuals with a solid social media scheduling strategy.

X / Twitter: Use 16:9 (1600 × 900 px) images for maximum impact in the timeline. Tweets with images get 150% more retweets than text-only tweets. Header banners at 1500 × 500 px are the first thing profile visitors see. Plan your X posting schedule to ensure consistent visual branding.

LinkedIn: Square images (1200 × 1200 px) perform well for feed posts, while landscape images (1200 × 628 px) work better for article shares and link posts. Your banner at 1584 × 396 px is prime real estate — use it to communicate your value proposition. A dedicated LinkedIn scheduler helps you maintain a professional posting cadence.

TikTok: Everything is 9:16 vertical video at 1080 × 1920 px. Keep important elements centred and avoid the edges where UI overlays appear. Thumbnails use the same 9:16 dimensions. Use a TikTok scheduler to batch your content.

YouTube: Thumbnails (1280 × 720 px) are arguably the most important image on the platform — they directly affect click-through rate. Use high-contrast colours, large readable text, and expressive faces. Channel banners at 2560 × 1440 px need a safe zone in the centre (1546 × 423 px) for cross-device display. Schedule uploads with a YouTube scheduler.

Threads: Currently supports square images at 1080 × 1080 px. The platform shares Instagram's visual DNA, so high-quality imagery is essential. Use a consistent visual style across both platforms for brand recognition.

Pinterest: Vertical pins outperform everything else. The ideal pin size is 1000 × 1500 px (2:3 ratio). Idea Pins use the full 9:16 format at 1080 × 1920 px. Rich, informative images with text overlays drive the most saves and outbound clicks.

Resizing images for each platform manually is time-consuming, especially when you are posting to five or more networks. Here are the most efficient approaches:

Design tools: Canva, Figma, and Adobe Express all offer social media preset templates. Select the platform and content type, and the canvas is automatically set to the correct dimensions.

AI image generation: PostEverywhere's AI image generator creates platform-ready visuals from text prompts. Describe what you want, pick a platform, and get an image at the exact dimensions needed — no manual resizing required.

Cross-posting with auto-adaptation: When you use PostEverywhere's cross-posting feature, you create one post and publish it across every connected platform. The system adapts your content for each network, so your image displays correctly on Instagram, Facebook, LinkedIn, X, and more — all from a single upload.

Batch scheduling: Pair properly sized images with a visual content calendar to plan and schedule weeks of content in advance. Use an AI content generator to write captions that match each platform's tone and best practices.

Before posting, always preview how your images will look in-feed. Our OG image checker lets you validate social sharing previews, and the Instagram grid previewer shows you how new posts will look on your profile.