Image Size Checker is a free, browser-based analysis tool by Aibrify that instantly verifies your image dimensions against all major social media platform requirements without uploading data to any server. Built for social media marketers and content creators who need fast, private image compatibility checks.
Why Getting Social Media Image Sizes Right Matters
Every social media platform has specific image size requirements. When you upload an image that doesn't match these requirements, the platform automatically crops, stretches, or compresses it — often cutting off important parts of your visual content. This can ruin your carefully designed graphics, hide your call-to-action text, or make your brand look unprofessional.
Getting image sizes right is particularly important for:
- Brand consistency: Your profile pictures, cover photos, and posts should look sharp and complete across all platforms.
- Engagement: Posts with properly sized images get up to 2.3x more engagement than those with incorrectly sized images.
- Ad performance: Social media ads with the correct image dimensions achieve better click-through rates and lower costs per click.
Complete Social Media Image Size Guide (2025)
Instagram Image Sizes
Instagram Square Post: 1080 x 1080 px — The classic Instagram format. Use for product photos, quotes, and team photos.
Instagram Portrait Post: 1080 x 1350 px — Takes up more screen space in the feed, leading to higher engagement. Best for product showcases and informational graphics.
Instagram Story / Reel: 1080 x 1920 px (9:16 aspect ratio) — Full-screen vertical format. Keep text and key elements within the center 80% to avoid UI overlap.
Instagram Profile Picture: 320 x 320 px — Displayed as a circle. Keep your logo or face centered.
Facebook Image Sizes
Facebook Post: 1200 x 630 px — The standard link preview and shared image size. Keep text to a minimum for ad eligibility.
Facebook Cover Photo: 820 x 312 px — Displays differently on mobile (640 x 360 px). Keep important content centered.
Facebook Story: 1080 x 1920 px — Same as Instagram Stories. Avoid placing text in the top and bottom 15%.
X (Twitter) Image Sizes
X Post Image: 1600 x 900 px (16:9) — Appears in-stream. Images larger than 5 MB won't upload. Use JPG or PNG for best quality.
X Header: 1500 x 500 px — Your profile banner. Dimensions may be cropped on mobile, so center your content.
LinkedIn, YouTube, Pinterest, and TikTok
LinkedIn Post: 1200 x 627 px — Professional content performs best with clean, high-contrast images.
YouTube Thumbnail: 1280 x 720 px — Thumbnails are the single biggest factor in YouTube click-through rate. Use bold text and vibrant colors.
Pinterest Pin: 1000 x 1500 px (2:3 ratio) — Vertical pins get 60% more engagement than horizontal ones.
TikTok Video Cover: 1080 x 1920 px — The cover image shown in your profile grid. Choose an engaging frame.
Image Optimization Tips
- Start with the largest size: Design at the largest platform requirement, then crop for smaller sizes.
- Use the safe zone: Keep critical content within the center 80% of your image to prevent cropping.
- Optimize file size: Compress images below 500 KB for fast loading. Use WebP format when supported.
- Test before publishing: Use this tool to verify dimensions before uploading to any platform.
- Create platform-specific versions: Don't force one image to work everywhere. Adapt your content for each platform's dimensions.