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Tiếng ViệtPlatforms rarely publish one definitive list, and they adjust their layouts often. The sizes below are the ones most commonly recommended as of November 2026, cross-checked across several up-to-date guides and the platforms' own help pages where available. Each row links to a resizer preset that produces exactly that size.
| Placement | Size (px) | Shape | Resizer |
|---|---|---|---|
| Portrait post | 1080 × 1350 | 4:5 | Resize |
| Square post | 1080 × 1080 | 1:1 | Resize |
| 3:4 post (grid preview shape) | 1080 × 1440 | 3:4 | Resize |
| Story and Reel | 1080 × 1920 | 9:16 | Resize |
| Profile picture | 320 × 320 minimum (upload larger) | 1:1, shown as a circle | Resize |
| Placement | Size (px) | Notes | Resizer |
|---|---|---|---|
| Thumbnail | 1280 × 720 | 16:9, minimum width 640 | Resize |
| Channel banner | 2560 × 1440 | Minimum 2048 × 1152; keep text in the central 1546 × 423; under 6 MB | Resize |
| Shorts cover | 1080 × 1920 | 9:16 | Resize |
| Placement | Size (px) | Notes | Resizer |
|---|---|---|---|
| Facebook profile picture | Square, 1000 × 1000 recommended upload | Shown as a circle | Resize |
| Facebook cover | 1640 × 624 (2× desktop display) | Phones show a taller centre crop | Resize |
| LinkedIn profile background | 1584 × 396 | 4:1 | Resize |
| X (Twitter) header | 1500 × 500 | 3:1 | Resize |
| Feed image (all three) | 1080 × 1080 or 1200 × 628 | Square or 1.91:1 | Resize |
| Placement | Size (px) | Notes | Resizer |
|---|---|---|---|
| WhatsApp profile photo | Square (1000 × 1000 here) | Shown as a circle | Resize |
| Discord emoji | 128 × 128 | Under 256 KB | Resize |
| Discord avatar / server icon | Square (512 × 512 here) | Shown as a circle | Resize |
| Discord server banner | 960 × 540 | 16:9 | Resize |
| Twitch emote | 112, 56 and 28 square | PNG, under 1 MB | Resize |
| Twitch sub badge | 72, 36 and 18 square | PNG | Resize |
| Twitch panel | 320 wide | PNG or JPG | Resize |
Why upload larger than the display size
Phones and laptops have high-density screens that show two or three device pixels per layout pixel. An image uploaded at exactly its display size looks soft on them. Uploading around twice the display size (as in the cover and profile presets) keeps it sharp, while platforms recompress anything far bigger.
Keep important things in the middle
Most platforms crop differently on phones, tablets and computers, and profile pictures are shown as circles. Keep faces, logos and text in the central area and use "Fit without cropping" when the whole picture must stay visible.
Questions
What is the best size for an Instagram post in 2026?
1080 × 1350 px (4:5 portrait) takes up the most space in the feed. The profile grid previews posts at 3:4, so keep the subject away from the very top and bottom.
What size is a YouTube thumbnail?
1280 × 720 px (16:9), with a minimum width of 640 px.