Social Media Resizer: Right-Sized Images for Every Platform
Each social platform has its own optimal image dimensions — and platforms re-encode whatever you upload, often badly. Pre-sizing your image to the platform's preferred dimensions gives you the cleanest possible result.
When you upload an oversized image to Instagram, it gets aggressively re-compressed. Pre-resizing to exactly what Instagram wants (1080px on the long edge) tells the platform 'no need to recompress' and you get a sharper feed image. Same logic applies to Twitter/X, LinkedIn, Facebook, and others.
Recommended dimensions by platform
| Platform / placement | Dimensions |
|---|---|
| Instagram feed (square) | 1080×1080 |
| Instagram feed (portrait) | 1080×1350 |
| Instagram story / Reel | 1080×1920 |
| Twitter/X post | 1200×675 (16:9) |
| Twitter/X header | 1500×500 |
| Facebook post | 1200×630 |
| Facebook cover | 851×315 |
| LinkedIn post | 1200×627 |
| LinkedIn cover (personal) | 1584×396 |
| YouTube thumbnail | 1280×720 |
| YouTube channel art | 2560×1440 |
| Pinterest pin | 1000×1500 |
| TikTok video | 1080×1920 |
Extended FAQ
Does pre-resizing actually improve quality?
Yes for Instagram — uploads at exactly 1080px receive minimal recompression compared to oversize uploads. The difference is most visible on photos with fine detail or text overlays.
Can I upload one large image and let the platform handle it?
You can, but the platform's algorithm will downscale + recompress to its target. Pre-resizing yourself gives a cleaner result.
Are my images uploaded?
No — runs entirely in your browser.