Best Image Sizes for Instagram, Twitter/X, LinkedIn & YouTube (2026)

Getting your image dimensions right is the difference between a crisp, professional feed and a post that looks blurry, awkwardly cropped, or squeezed. Every social platform re-processes what you upload, and when your source file does not match the expected ratio, the algorithm crops or compresses it for you, rarely in a flattering way. Using the correct pixel dimensions from the start keeps faces centered, text readable, and thumbnails sharp.

This 2026 guide lists the current recommended sizes for Instagram, Twitter/X, LinkedIn, and YouTube, plus the aspect ratios and file-size tips that keep your uploads fast and clean. Every dimension below is a target you can hit in seconds with free, in-browser tools. You can resize your image to exact pixels or crop it to a specific ratio right in your browser, with no uploads, no signup, and no watermarks, because all Pixohub processing happens locally on your device.

Bookmark this page and treat it as a quick reference before you schedule a post, refresh a banner, or design a new thumbnail. The dimensions are grouped by platform, and each section explains not just the numbers but why they matter and how to fix a source image that does not fit.

Instagram image sizes

Instagram supports several formats, and the portrait 4:5 post now takes up more vertical space in the feed than a square, making it the highest-impact choice for reach. Stories and Reels are full-screen vertical.

• Square post: 1080 x 1080 px (1:1)
• Portrait post: 1080 x 1350 px (4:5) — recommended for maximum feed space
• Story and Reel: 1080 x 1920 px (9:16)
• Profile photo: 320 x 320 px (displayed as a circle)

Instagram crops your profile photo into a circle, so keep faces and logos centered with breathing room around the edges. To preview that exactly, use a circle crop tool before you upload. If your source image is not already square, do not let Instagram cut off the edges. Instead, pad it out to a square canvas with a matching background color so the whole subject stays visible.

Twitter/X image sizes

On X, in-stream images look best at a 16:9 ratio, which displays fully without cropping in the timeline. A 16:9 photo also gives you the largest possible preview, so it stops more thumbs mid-scroll than a smaller square would. Header and profile images have fixed frames, so precision matters.

• In-stream image: 1600 x 900 px (16:9)
• Header/banner: 1500 x 500 px (3:1)
• Profile photo: 400 x 400 px (displayed as a circle)

The header is wide and short, so busy photos with edge detail get awkwardly trimmed on different screen widths. Keep the important content near the center. If your header source is the wrong shape, crop it to a 3:1 ratio first, then resize to 1500 x 500 px so nothing is stretched.

LinkedIn image sizes

LinkedIn favors a landscape link-preview shape for shared posts, and it uses distinct sizes for personal profiles versus company pages. Getting these right signals a polished, professional presence, and it prevents your link previews from showing up cropped or with the wrong focal point in the feed.

• Shared post / link image: 1200 x 627 px (roughly 1.91:1)
• Profile cover / background: 1584 x 396 px (4:1)
• Profile photo: 400 x 400 px (displayed as a circle)
• Company page logo: 300 x 300 px (1:1)

The profile cover is extremely wide and thin, and part of the lower-left is covered by your profile photo and name. Keep key text and faces in the upper-right region. A quick manual crop lets you frame the banner precisely, and you can then set the final export to 1584 x 396 px for a pixel-perfect fit.

YouTube image sizes

YouTube lives and dies by the thumbnail. It must read clearly at a tiny size on a phone and stay sharp when expanded on a TV, which means a 16:9 ratio at high resolution.

• Thumbnail: 1280 x 720 px (16:9), under 2 MB
• Channel banner / art: 2560 x 1440 px, with a safe area of 1546 x 423 px
• Profile photo: 800 x 800 px (displayed as a circle)

The channel banner is the trickiest asset in social media. YouTube shows different crops on phones, tablets, desktops, and TVs, but the central safe area of 1546 x 423 px is visible everywhere. Put your logo, channel name, and any tagline inside that safe zone. Upload the full 2560 x 1440 px canvas so the outer regions can fill larger displays. To hit the exact banner dimensions, resize to precise pixel values rather than eyeballing it.

Understanding aspect ratios

Pixel counts matter, but aspect ratio is what actually determines whether your image is cropped. Match the ratio first, then scale to the exact resolution. These four ratios cover almost every social placement:

• 1:1 (square) — Instagram square posts, profile photos, company logos
• 4:5 (portrait) — Instagram feed posts that maximize vertical space
• 16:9 (landscape) — X in-stream images, YouTube thumbnails and video
• 9:16 (vertical) — Instagram Stories and Reels, and other full-screen mobile formats

If you shoot or design in the wrong ratio, cropping to the right one is faster and cleaner than stretching, which distorts faces and text. Use an aspect-ratio crop to lock a target like 4:5 or 16:9, then reposition the frame over the part of the image you want to keep.

File size and format tips

The right dimensions still look bad if the file is heavy or over-compressed by the platform. A few habits keep uploads fast and quality high:

• Use JPG for photos and complex images; it gives small files with good quality.
• Use WebP where a platform accepts it for even smaller files at the same quality, and PNG only when you need transparency or crisp flat graphics.
• Keep YouTube thumbnails light — aim well under the 2 MB limit so they load instantly.
• Export at the exact target resolution instead of uploading a huge file; oversized images get re-compressed harder by the platform.
• Avoid saving a JPG repeatedly, since each save loses a little quality.

Before you post, it is worth shrinking the file. You can compress an image for faster loading to trim the file size while keeping it visually sharp, which matters most for thumbnails and link previews that need to render quickly in a busy feed.

Quick workflow

For any platform, the process is the same three steps: pick the correct aspect ratio and crop to it, resize to the exact recommended pixels, then compress the final file. Everything above can be done in your browser in under a minute, completely free, with your images never leaving your device.

A note on changing specs

Social platforms update their layouts and recommended sizes regularly, so treat these figures as a reliable 2026 baseline rather than permanent rules. When an exact fit is critical, verify the current numbers in each platform's own help center before a big launch. The aspect ratios, however, change far less often, so designing to the right ratio is the safest long-term habit — and one you can always re-crop or resize to match a new spec later.