Social Media Image Resizer
Make any photo the perfect size for a YouTube thumbnail, Shorts, Instagram, Pinterest, Facebook or LinkedIn. Free, no watermark, and your image never leaves your device.
JPG, PNG or WebP
🔒 Your image is resized on your own device. It is never uploaded.
How to resize an image for social media
- Choose your image. Click the box or drag a photo onto it. JPG, PNG and WebP all work.
- Pick a size, for example "YouTube thumbnail" or "Pinterest pin".
- Choose how to fit it. Fill crops the edges so the picture covers the whole frame. Fit keeps the whole picture and adds a coloured background around it.
- Choose the format and quality, then press Download image.
Recommended image sizes in 2026
| Where | Size (pixels) | Shape |
|---|---|---|
| YouTube thumbnail | 1280 × 720 | 16:9 |
| YouTube Shorts, TikTok, Instagram Reels | 1080 × 1920 | 9:16 |
| Instagram square post | 1080 × 1080 | 1:1 |
| Instagram portrait post | 1080 × 1350 | 4:5 |
| Pinterest pin | 1000 × 1500 | 2:3 |
| Facebook post and link preview | 1200 × 630 | about 1.91:1 |
| LinkedIn post | 1200 × 627 | about 1.91:1 |
| X (Twitter) post | 1600 × 900 | 16:9 |
| YouTube channel banner | 2560 × 1440 | 16:9 |
For a YouTube thumbnail, YouTube recommends 1280 × 720 pixels and a file under 2 MB. A JPG at 85 to 90% quality is usually well under that limit. For a channel banner, keep your text and logo in the centre, because TV, computer and phone screens show different parts of the image.
JPG, PNG or WebP?
- JPG is best for photos and thumbnails. It makes small files that upload quickly.
- PNG keeps sharp edges and text perfectly, and supports transparent backgrounds, but the files are bigger.
- WebP makes the smallest files and is great for websites, but some older apps cannot open it.
Tips for better thumbnails and pins
- Start with the biggest, sharpest image you have. Making a small image bigger always looks a little blurry.
- Use Fill with the crop position set to Top when the face or main subject is near the top of the photo.
- Add your title text after resizing in a free design tool. See our guide on how to use Canva AI for free.
- Need a new picture? Try one of the best free AI image generators.
Frequently asked questions
Is this image resizer really free?
Yes. It is free with no limits, no sign-up and no watermark on your images.
Is my photo uploaded to a server?
No. The image is resized inside your own browser using your device. It is never uploaded, so it is safe for private photos.
What is the best size for a YouTube thumbnail?
1280 × 720 pixels (16:9) and under 2 MB. Choose the "YouTube thumbnail" size and the JPG format in this tool.
Why does my resized image look blurry?
The original image is smaller than the new size. Use a larger original image, or choose a smaller output size.
Can I use it on my phone?
Yes. It works in the browser on Android phones and iPhones. Tap the box to pick a photo from your gallery.