Free Online Image Resizer for Social Media (Instagram, TikTok, YouTube & Discord)

Correct Social Media Image Sizes for Every Platform (2026)

Using the wrong image size on social media results in cropping, compression artifacts, and lower quality posts. Each platform has specific requirements — and they differ significantly. Here are the key sizes you need:

Instagram Image Sizes 2026

Instagram recommends 1080×1080px for square posts and 1080×1350px for portrait posts (the best-performing format as it takes up more vertical screen space in the feed). Stories and Reels use 1080×1920px. Instagram compresses images aggressively — always upload at full resolution.

Facebook Image Sizes 2026

Facebook profile pictures display at 170×170px on desktop but should be uploaded at 320×320px minimum. Cover photos are 820×312px. For feed posts, 1200×630px works best for link previews, while square posts perform well at 1200×1200px.

YouTube Thumbnail and Banner Sizes

YouTube thumbnails should be 1280×720px (16:9 ratio) — this is the format shown in search results and recommendations. Channel banners require 2048×1152px with the safe zone in the center 1546×423px.

Why Image Dimensions Matter for SEO and Reach

Platforms reward correct-sized images with better distribution. Instagram reduces the reach of posts with non-standard dimensions. Facebook crops cover photos differently on mobile vs desktop. Using the exact recommended size avoids automatic re-cropping that can cut off faces or text.

This resizer works alongside the Twitch banner maker and Discord PFP maker for a complete social media branding toolkit.

Best Free Social Media Image Resizer — No Upload Required

Most image resizers upload your file to a server and process it there. Use it together with our Twitch banner maker and Discord PFP maker to build a complete streaming brand. SkinRender's resizer runs entirely in your browser — your image never leaves your device. This makes it the fastest and most private option for resizing social media images, with no file size limits and no waiting.

Unlike Canva (requires signup) or Photoshop (paid, complex), SkinRender gives you the correct dimensions for every major platform in one click — completely free, no account needed.

Resize Images for Instagram, TikTok, YouTube and Discord

Every platform has different image size requirements. Getting them wrong means cropped thumbnails, blurry avatars and unprofessional-looking profiles. Here's what you need:

• Instagram posts — 1080×1080px (square) or 1080×1350px (portrait). Square posts get slightly more reach.
• Instagram Stories & TikTok videos — 1080×1920px (9:16 vertical). Full-screen vertical format.
• YouTube thumbnails — 1280×720px. Minimum 640px wide. JPG or PNG under 2MB.
• YouTube channel banner — 2560×1440px. Safe zone: center 1546×423px.
• Facebook cover photo — 851×315px desktop / 640×360px mobile. Design for mobile-first.
• Discord server icon — 512×512px minimum. Displays at 96×96px in most views.
• Twitter/X profile picture — 400×400px. Displays in circle crop at 48px.

Social Media Image Resizer vs Canva vs Photoshop