Every social platform compresses, crops, and reformats your images the moment you upload them. The gap between what you upload and what your audience actually sees can be enormous, and the wrong dimensions are the single fastest way to make professional content look amateur. This guide compiles the verified dimensions for every major platform in March 2026, tested against actual uploads.
If you need to resize an image right now, Klara resizes and converts to WebP for every platform listed below, free, in one click.
Instagram Image Sizes in 2026
Instagram processes billions of images daily and applies aggressive compression on upload. Starting with the correct pixel dimensions is the only reliable way to maintain visual quality after Instagram’s processing pipeline.
Feed posts support three aspect ratios. Portrait at 1080 × 1350 pixels (4:5) occupies the most vertical space in the feed and consistently drives higher engagement than square or landscape. Square at 1080 × 1080 pixels (1:1) remains the safest choice for grid consistency. Landscape at 1080 × 566 pixels (1.91:1) works for cinematic shots but gets less screen real estate on mobile. Instagram added support for 1080 × 1440 pixels (3:4) during 2025, and this ratio now appears natively in feeds without forced cropping.
Stories and Reels both use 1080 × 1920 pixels (9:16), full-screen vertical. The critical detail most guides miss: Instagram’s UI overlays cover the top 250 pixels and bottom 250 pixels of every Story. Text, logos, and faces placed in those zones get hidden behind the username bar and action buttons. The effective safe zone is 1080 × 1420 pixels in the center of the canvas.
Carousels can hold up to 20 slides. The first image determines the aspect ratio for all subsequent slides. Mixing aspect ratios within a carousel forces Instagram to add white bars, which looks unprofessional. Standardize every slide to the same ratio before uploading.
Profile picture displays at 110 × 110 pixels on feed but is stored at 320 × 320 pixels. Upload at 320 × 320 minimum, centered, with critical elements away from the circular crop edges.
Export format: JPEG at 85-95% quality for photographs, PNG for graphics with text or sharp edges. File size under 10 MB avoids Instagram’s most aggressive compression pass.
Resize images for Instagram with exact 2026 dimensions →
LinkedIn Image Sizes in 2026
LinkedIn’s feed algorithm favors native content over shared links, which makes correctly sized images directly impact visibility. The platform has subtly different dimension requirements from consumer-focused networks.
Feed posts perform best at 1200 × 1200 pixels (1:1 square). This fills the maximum feed width on both desktop and mobile. Portrait format at 1080 × 1350 (4:5) also works in the feed, though LinkedIn crops vertical images more aggressively than Instagram does. Landscape images for link previews should be 1200 × 627 pixels (1.91:1).
LinkedIn banner (the header image on your profile or company page) requires 1584 × 396 pixels. The left portion of the banner is partially covered by your profile photo on desktop, so avoid placing important text or logos in the left 40% of the image.
Document posts and carousels (uploaded as PDFs) display at approximately 1080 × 1080 pixels per page. Design each page within this canvas. Document posts consistently outperform standard image posts in engagement on LinkedIn during 2025-2026, likely because the swipe mechanic increases dwell time and the algorithm interprets that as higher-quality content.
Profile picture is stored at 400 × 400 pixels and displayed in a circle. Upload at 400 × 400 minimum.
Resize images for LinkedIn with exact 2026 dimensions →
TikTok Image Sizes in 2026
TikTok is video-first, but its photo slideshow feature (launched mid-2024) now supports up to 35 images per carousel, and static image posts are gaining traction.
Photo slideshows and image posts should be 1080 × 1920 pixels (9:16 vertical). This fills the full screen. Square images (1080 × 1080) technically display, but TikTok adds blurred bars above and below, which reduces perceived quality and screen presence. Vertical is functionally mandatory for competitive reach.
Video thumbnails use the same 9:16 ratio at 1080 × 1920 pixels. TikTok auto-generates a thumbnail from your video, but custom thumbnails give you control over what appears in profile grids and search results.
Profile picture is stored at 200 × 200 pixels, displayed in a circle.
Resize images for TikTok with exact dimensions →
YouTube Image Sizes in 2026
YouTube operates on a fundamentally different display paradigm than social feeds. Thumbnails are the primary visual currency, and their quality directly correlates with click-through rate.
Thumbnails should be 1280 × 720 pixels (16:9) with a maximum file size of 2 MB. This dimension produces sharp results on desktop, mobile, TV, and embedded players. YouTube recommends a minimum width of 640 pixels, but anything below 1280 will look soft on larger screens. The most effective thumbnails use high-contrast faces, readable text at small sizes (3-5 words maximum), and a visual composition that reads at 120 × 67 pixels, the smallest display size on mobile feeds.
Channel banner requires 2560 × 1440 pixels (16:9) to look correct across desktop, mobile, tablet, and TV. The safe zone for text and logos is a centered area of 1546 × 423 pixels. Anything outside this zone gets cropped depending on the viewing device. Maximum file size is 6 MB.
Profile picture is stored at 800 × 800 pixels, displayed in a circle at 98 × 98 pixels.
YouTube Shorts thumbnails follow the same 9:16 vertical ratio at 1080 × 1920 pixels, consistent with TikTok and Instagram Reels.
Resize images for YouTube thumbnails →
Twitter/X Image Sizes in 2026
Twitter/X displays images differently depending on whether you share one image, two, three, or four in a single post. The platform’s dynamic cropping algorithm means your image might be cropped unpredictably if you don’t match the expected aspect ratios.
Single image posts display best at 1600 × 900 pixels (16:9). This ratio fills the full preview area without any cropping. Square images (1080 × 1080) also display well, though they get slight vertical cropping in the feed. The maximum file size is 5 MB for photos (15 MB for GIFs).
Header/banner image should be 1500 × 500 pixels (3:1). The header appears at the top of your profile and is visible behind your profile photo. Critical content should be centered vertically.
Profile picture is stored at 400 × 400 pixels, displayed in a circle.
Cards (link previews) use 1200 × 628 pixels for large image cards. If your website serves properly sized Open Graph images at this dimension, Twitter/X displays them without cropping.
Pinterest Image Sizes in 2026
Pinterest is uniquely vertical. The algorithm actively penalizes images that don’t conform to its preferred aspect ratios, and distribution drops sharply for horizontal content.
Standard pins should be 1000 × 1500 pixels (2:3 ratio). Pinterest has explicitly communicated that 2:3 is their preferred ratio and that the algorithm limits distribution for images longer than 1500 pixels or with ratios taller than 2:3. This is worth repeating because older guides still recommend 1000 × 2100 or taller formats, which Pinterest now actively suppresses.
Idea pins support multiple formats, but 1080 × 1920 (9:16) provides the fullest screen coverage on mobile, where the majority of Pinterest’s traffic originates.
Profile picture is stored at 165 × 165 pixels, displayed in a circle. Cover photos use 800 × 450 pixels minimum (16:9).
Resize images for Pinterest pins →
Facebook Image Sizes in 2026
Facebook supports an enormous range of image contexts, from feed posts to group covers to event banners. The most commonly needed dimensions:
Feed posts perform best at 1200 × 630 pixels (1.91:1) for link shares and landscape photos. For standalone image posts without links, 1080 × 1350 pixels (4:5 portrait) occupies the most screen real estate, identical to Instagram’s feed format. Square at 1080 × 1080 also works. Facebook and Instagram share the same parent company infrastructure, so the optimal feed dimensions have converged significantly.
Cover photo for profiles requires 851 × 315 pixels on desktop, but Facebook displays it at 640 × 360 on mobile. The safest approach is to design at 851 × 315 with critical content centered both horizontally and vertically.
Stories match Instagram’s dimensions: 1080 × 1920 pixels (9:16). Cross-posting between Facebook and Instagram Stories is seamless when dimensions match.
Event cover should be 1920 × 1005 pixels (1.91:1). Group cover photos use 1640 × 856 pixels.
Profile picture is stored at 320 × 320 pixels, displayed in a circle.
Threads and Bluesky Image Sizes in 2026
Both platforms are gaining traction and have their own specifications worth tracking.
Threads (Meta) supports images up to 1440 pixels wide. Square (1:1) and portrait (4:5) formats display best in the feed. The platform pulls from the same media infrastructure as Instagram, so images optimized for Instagram feed posts generally work perfectly on Threads.
Bluesky stores images with the longest side at 1000 pixels. Each post supports up to four images, each limited to 1 MB. Standard ratios (1:1, 4:5, 9:16) all display cleanly. The platform is still evolving its image handling, so expect these specifications to change.
Why File Format Matters as Much as Dimensions
Getting the pixel dimensions right is half the equation. The other half is file format and compression. WebP images are 60-80% smaller than PNG and 25-34% smaller than JPEG at equivalent visual quality, according to Google’s own compression studies. The practical impact: your images load faster on every platform, your website scores higher on Core Web Vitals, and your hosting costs decrease.
Over 95% of browsers support WebP natively in 2026. There is no longer a meaningful compatibility reason to serve PNG or JPEG on the web. The performance advantage of WebP is measurable and significant, particularly on mobile connections where bandwidth is constrained and loading speed directly affects bounce rates.
Convert any image to WebP for free with Klara →
Quick Reference: All Sizes in One Table
| Platform | Format | Dimensions (px) | Aspect Ratio |
|---|---|---|---|
| Feed Post (portrait) | 1080 × 1350 | 4:5 | |
| Feed Post (square) | 1080 × 1080 | 1:1 | |
| Story / Reel | 1080 × 1920 | 9:16 | |
| Profile | 320 × 320 | 1:1 | |
| Feed Post | 1200 × 1200 | 1:1 | |
| Banner | 1584 × 396 | 4:1 | |
| Profile | 400 × 400 | 1:1 | |
| TikTok | Image / Video | 1080 × 1920 | 9:16 |
| YouTube | Thumbnail | 1280 × 720 | 16:9 |
| YouTube | Channel Banner | 2560 × 1440 | 16:9 |
| Twitter/X | Post | 1600 × 900 | 16:9 |
| Twitter/X | Header | 1500 × 500 | 3:1 |
| Pin | 1000 × 1500 | 2:3 | |
| Post (landscape) | 1200 × 630 | 1.91:1 | |
| Cover | 851 × 315 | 2.7:1 | |
| Story | 1080 × 1920 | 9:16 |
All dimensions verified against official platform guidelines as of March 2026. Platforms update specifications periodically. This table will be updated as changes are confirmed.
Resize for any platform in one click with Klara →
The Fastest Way to Resize for Every Platform
If you manage content across multiple platforms, manually resizing the same image six or eight times is the kind of repetitive work that shouldn’t exist in 2026. Klara takes a single upload, resizes it to the exact dimensions for every platform listed above, and converts it to WebP automatically. The free tier handles 5 images per day. Klara Pro ($4.99/month) unlocks batch processing and one-click all-platforms export, generating every size from a single upload in under 10 seconds.
No signup. No watermark. Processing happens in your browser. Your images stay private.
Sources: Instagram Help Center (2026), LinkedIn Marketing Solutions (2026), TikTok Creator Academy (2026), YouTube Help (2026), Twitter/X Developer Documentation (2026), Pinterest Business (2026), Meta Business Help Center (2026), Google WebP Compression Study, Can I Use WebP browser support data.