The Complete Social Media Image Size Guide (2026)

Post a perfectly good image at the wrong size and the platform takes revenge: faces cropped at the forehead, text sliced mid-word, a crisp graphic recompressed into fuzz. Every network has its own dimensional dialect, the numbers drift every couple of years, and "I'll just let it auto-crop" is how banner text loses its last word in public.

Here's the 2026 reference table — and the tools that make hitting these numbers a click instead of a calculation.

The sizes that matter in 2026

Three durable principles behind the numbers: upload at *least* these dimensions (platforms downscale gracefully, upscale uglily); vertical formats (4:5, 9:16) get more screen per impression on mobile feeds; and every "cover/banner" placement crops differently per device — keep critical content in the central safe area.

The one-click route: platform presets

Memorizing the table is nobody's job. Social Media Image Resizer carries these placements as presets — pick "Instagram Story," drop your image, and the crop frame is already the right ratio; drag to choose *what* survives the crop, export at exact pixels. The deliberate-crop step is the quality difference: auto-crop centers blindly, while your subject is rarely dead-center.

For sizes outside the presets, the general pair does everything: Crop Image to the target ratio, then Resize Image to exact pixels. Bulk-preparing one design for five platforms? Run the presets in sequence — five exports, five minutes.

The compression companion

Dimensions are half the spec; weight is the other half. Platforms recompress heavy uploads aggressively — and *their* compressor is tuned for speed, not your gradients. Uploading a lean file (under ~1MB for feed images) keeps quality decisions in your hands: Compress Image after resizing, always in that order. Text-heavy graphics survive best as PNG; photos as high-quality JPG — the full logic lives in our format guide.

Platform-specific extras

The image is rarely the whole post. Same drawer, adjacent jobs: Instagram Grid Preview shows how feed posts compose into the profile mosaic before you commit; Hashtag Generator builds tag sets sized to each platform's culture; Social Bio Generator fits your pitch into each network's bio limits; and YouTube's thumbnail — the placement with the highest stakes per pixel — has its own complete guide and maker.

Frequently Asked Questions

Do I really need different images per platform?

For feed posts, one 1080×1350 master crops acceptably to most placements. For anything with text or tight composition — thumbnails, covers, stories — per-platform exports are the difference between professional and cropped-forehead.

Why does my uploaded image look blurry on the platform?

Either it was under-sized (platform upscaled it) or overweight (platform recompressed it hard). Exact dimensions + lean file size prevents both — that's the whole workflow above.

What's the safe area on banners?

Assume the outer ~20% of any cover/banner can vanish on some device. Logos and text live in the center; textures and color can run to the edges.

Where do these tools process my images?

In your browser — unpublished creative never uploads anywhere until *you* post it. Draft freely.

Bookmark the table, but use the shortcut: open Social Media Image Resizer, pick the preset, drag the crop — the whole creator bench is at Social Media.