Image SEO

The best image sizes for 2026

Resizely Team8 min readReference tables

Using the right dimensions keeps your images sharp, your pages fast, and your social posts looking professional. Here are the sizes that matter in 2026 — for websites and every major platform — plus how to hit them in one click.

Website image sizes

The golden rule: never serve an image larger than it will be displayed. Match the image to its slot, then let responsive markup handle smaller screens.

PlacementRecommended width
Full-width hero / banner1920 px
In-content / blog image1200 px
Thumbnail / card600 px
Product image2000 px (for zoom)
Logo / iconExport at 2× display size

Resize to these before uploading with the resizer — it has one-click scaling and custom dimensions.

Social media sizes

Each platform crops and compresses differently, so uploading the exact recommended size avoids ugly auto-cropping.

Platform / formatDimensions
Instagram post (square)1080 × 1080
Instagram story / Reel1080 × 1920
Facebook / LinkedIn link image1200 × 630
LinkedIn banner1584 × 396
YouTube thumbnail1280 × 720
X (Twitter) card1200 × 630

Skip the lookup table: the social media preset tool has every one of these sizes built in — pick the platform and it resizes and crops your image correctly in a click.

Open social presets →

Aspect ratio matters as much as pixels

If your source image is the wrong shape, resizing alone will squash it. Crop to the target aspect ratio first (1:1, 16:9, 4:5, and 9:16 cover almost everything), then resize. The all-in-one editor lets you crop to a preset ratio and resize in the same step.

Then compress

Correct dimensions are half the job; the other half is file size. After sizing, run each image through the compressor. For the full workflow, follow the image optimization checklist.