2026 Reference Cheat Sheet 7 min read• Updated November 2026

2026 Social Media Image & Video Size Cheat Sheet (Instagram, TikTok, YouTube & LinkedIn)

Q: What is the best image size for Instagram feed posts in 2026?

The highest-engagement Instagram feed dimension in 2026 is Portrait 4:5 (1080×1350 px), because it occupies 25% more vertical screen real estate on mobile feeds than a 1:1 square (1080×1080 px). For Stories and Reels, use 9:16 (1080×1920 px).

Q: What are the exact YouTube thumbnail dimensions and file size limits?

YouTube thumbnails require a 16:9 aspect ratio at 1280×720 pixels (minimum width 640 px) in JPG, PNG, or WebP format, and must strictly be under 2 MB in file size.

Q: What is the official LinkedIn profile banner size in 2026?

A personal LinkedIn background banner is 1584×396 pixels (4:1 aspect ratio, max 8 MB). A LinkedIn Company Page cover image is 1128×191 pixels, and shared link preview posts use 1200×627 pixels (1.91:1).

Uploading an image with the wrong aspect ratio or file weight triggers aggressive server-side re-compression on Instagram, LinkedIn, and YouTube—turning crisp text and logos into blurry blocks. Bookmark this 2026 dimension and file-size cheat sheet to export pixel-perfect social assets every time.

Instagram (Feed, Carousel, Stories & Reels)

Placement / Format	Exact Pixels (W × H)	Aspect Ratio	Recommended Codec	Max File Size
Portrait Feed Post / Carousel (Recommended ⭐)	1080 × 1350 px	4:5	JPG / PNG / WebP	≤ 8 MB
Square Feed Post	1080 × 1080 px	1:1	JPG / PNG / WebP	≤ 8 MB
Instagram Stories & Reels Video/Cover	1080 × 1920 px	9:16	MP4 (H.264) / JPG	≤ 4 GB (Video)
Profile Picture	320 × 320 px	1:1	JPG / PNG	≤ 1 MB

TikTok & YouTube (Thumbnails, Shorts & Banners)

Placement / Format	Exact Pixels (W × H)	Aspect Ratio	Recommended Codec	Max File Size
TikTok Vertical Video & Photo Mode	1080 × 1920 px	9:16	MP4 / WebM / MOV	≤ 500 MB (Web)
YouTube Video Thumbnail (Strict 2 MB Cap)	1280 × 720 px	16:9	JPG / PNG / WebP	Strictly < 2 MB
YouTube Shorts Vertical Video	1080 × 1920 px	9:16	MP4 (H.264)	≤ 60–180 sec
YouTube Channel Banner (Safe Area 1546×423)	2560 × 1440 px	16:9	JPG / PNG	Strictly ≤ 6 MB

LinkedIn, X (Twitter) & OpenGraph Link Previews

Placement / Format	Exact Pixels (W × H)	Aspect Ratio	Recommended Codec	Max File Size
LinkedIn Personal Profile Banner	1584 × 396 px	4:1	JPG / PNG	≤ 8 MB
LinkedIn Company Page Cover	1128 × 191 px	5.9:1	JPG / PNG	≤ 8 MB
X (Twitter) Header Banner	1500 × 500 px	3:1	JPG / PNG	≤ 5 MB
X / LinkedIn / OpenGraph Shared Link Card	1200 × 630 px	1.91:1	WebP / JPG / PNG	Recommended < 300 KB

3 Rules to Prevent Social Media From Blurring Your Uploads

1. Pre-Resize to Exact Width

If you upload a 4000px photo to Instagram, its mobile app downscales it using a fast, low-quality bilinear filter. Resize to exactly 1080px wide in Vexelloom Image Resizer first so you control the edge sharpening.

2. Stay Under Platform KB Thresholds

YouTube rejects thumbnails over 2 MB, and Instagram aggressively crushes JPEGs over 1.5 MB. Pre-compressing at Quality 82 keeps your file under the platform's re-compression trigger.

3. Convert GIFs to H.264 MP4

Instagram, TikTok, and LinkedIn either reject .gif files or convert them poorly. Use GIF to Video Converter to turn animations into crisp 1080p MP4 clips.

One-Click Social Media Presets in Your Browser

Skip manual pixel entry—Vexelloom's Image Resizer includes built-in presets for Instagram Posts (1080×1350), Stories/TikTok (1080×1920), YouTube Thumbnails (1280×720), and LinkedIn Banners:

Open Social Media Image Resizer Compress Under 2MB / 200KB

Frequently Asked Questions: Social Media Image Sizes

The highest-engagement Instagram feed dimension in 2026 is Portrait 4:5 (1080×1350 px), because it occupies 25% more vertical screen real estate on mobile feeds than a 1:1 square (1080×1080 px). For Stories and Reels, use 9:16 (1080×1920 px).

YouTube thumbnails require a 16:9 aspect ratio at 1280×720 pixels (minimum width 640 px) in JPG, PNG, or WebP format, and must strictly be under 2 MB in file size.

A personal LinkedIn background banner is 1584×396 pixels (4:1 aspect ratio, max 8 MB). A LinkedIn Company Page cover image is 1128×191 pixels, and shared link preview posts use 1200×627 pixels (1.91:1).

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