Social Media Image Resizer
Every platform wants a different shape: square posts, tall stories, wide covers and thumbnails. Uploading the wrong shape means the platform crops it for you, often badly.
- Never uploaded
- Instant, no sign-up
- Works offline
Drop images here
Files stay in your browser — nothing is uploaded.
About this tool
Pick the platform size and your photo is center-cropped to the right shape and scaled to the exact pixels, so it looks just as you intended.
How it works
- 1
Add your photo.
- 2
Choose a platform size from the list.
- 3
Download the ready-to-post image.
Features
- Every major platformInstagram, YouTube, Facebook, LinkedIn, X, Pinterest and website previews.
- Crop, not stretchImages are cropped to the platform's shape, so nothing is distorted.
- Exact pixelsThe output matches the platform's recommended size.
- Private by designEverything runs on your device. No uploads, no account, no watermark, and EXIF/GPS data is stripped from the result.
Supported formats
Input: JPG, PNG, WebP, GIF (first frame), BMP, SVG, AVIF, plus TIFF/HEIC where your browser can decode them. Output: PNG, JPG or WebP.
Frequently asked questions
What size is an Instagram post?
1080×1080 for square, 1080×1350 for portrait and 1080×1920 for stories and reels.
What size is a YouTube thumbnail?
1280×720 pixels (16:9).
Which part of my photo is kept?
The center. For a different focus, crop first in the photo editor.
Are my images uploaded to a server?
No. Files are decoded, processed and re-encoded by your browser using the canvas API and Web Workers. Nothing is sent to any server, and there is no account or storage. Closing the tab discards everything.
Related tools
Need more than one tool?
The full editor combines cropping, adjustments, filters, text, shapes and layers in one place.