The 2026 dimension cheat sheet
| Placement | Pixels | Ratio |
|---|---|---|
| Instagram feed (square) | 1080 × 1080 | 1:1 |
| Instagram feed (portrait) | 1080 × 1350 | 4:5 |
| Instagram Stories / Reels | 1080 × 1920 | 9:16 |
| YouTube thumbnail | 1280 × 720 | 16:9 |
| Facebook cover | 820 × 312 | ~2.6:1 |
| X (Twitter) header | 1500 × 500 | 3:1 |
| LinkedIn banner | 1584 × 396 | 4:1 |
| Profile pictures (universal) | 400 × 400 | 1:1 |
| TikTok cover | 1080 × 1920 | 9:16 |
Platforms re-compress aggressively — upload at exactly these dimensions to avoid their resampler making choices for you.
The workflow: crop once, resize everywhere
Step 1 — Crop for composition
Composition is a human decision. Use the Photo Cropper (free-form, or lock 1:1 / 4:5 / 16:9) and drag until the subject sits on a rule-of-thirds intersection. The grid overlay helps.
Step 2 — Resize to exact pixels
Batch the rest with the platform-specific tools: Instagram Post Size, Story Size, YouTube Thumbnail etc. "Cover" mode fills the frame and trims the overflow; "contain" letterboxes instead.
Step 3 — Circle avatars
Most platforms mask circularly. Preview exactly that with the Circle Image Cropper — it exports PNG with transparent corners so you can check what survives the mask before uploading.
Step 4 — Bulk one ratio across many photos
Shot a whole event in 3:2 and need everything in 1:1? Bulk Photo Cropper center-crops the entire batch to any ratio in one pass.
Why do this offline?
Social platforms already get your images when you publish. The pre-processing step — cropping family photos, resizing client deliverables, creating that LinkedIn banner from a personal picture — is exactly the part where uploading to a random tool site means handing originals (with full EXIF and GPS) to a third party. Do that step locally and the only copy that exists anywhere is the one you choose to publish.