Upload an image at the wrong size and the platform crops it for you, usually cutting off the headline or someone’s head. Upload a huge file and YouTube rejects it for being over 2 MB. Getting the size right before you upload saves both problems.
Quick reference: image sizes for 2026
- YouTube thumbnail: 1280×720 px (16:9), under 2 MB.
- Full HD frame / video still: 1920×1080 px.
- TikTok, Instagram Reels, YouTube Shorts: 1080×1920 px (9:16).
- Instagram square post: 1080×1080 px.
- Instagram portrait post: 1080×1350 px (4:5), which takes up more of the feed.
- Facebook post or link preview: 1200×630 px.
How to resize an image in seconds
- Open the Image Resizer & Compressor and choose your image.
- Pick a preset, for example YouTube Thumbnail – 1280×720. You can also type a custom width and height.
- Choose how the image should fit:
- Fill & crop fills the frame and trims the edges.
- Fit with blurred background keeps the whole picture and fills the empty space with a soft blurred copy. This is the best way to turn a landscape photo into a vertical Reel.
- Fit with solid colour adds plain bars in any colour.
- Choose JPG, WebP or PNG and set the quality.
- Check the new file size under the buttons and click Download.
Which format and quality should you use?
JPG at 80–90% is ideal for thumbnails and photos. It looks identical to the original but is usually five to ten times smaller. WebP is even smaller and works well on websites. PNG is the only choice when you need transparency, for example a logo or a cut-out.
Thumbnail tips that improve clicks
- Design at 1280×720, then zoom out to 25% to see how it looks on a phone.
- Use one face, one object and no more than five words.
- High contrast beats detail. A bright subject on a dark background stands out in a busy feed.
- Write your headline with Urdu Text to PNG for clean Nastaliq that won’t break.
Your images stay on your device
The resizer works entirely in your browser. Nothing is uploaded, and there is no watermark. Looking for images to use? Browse our free transparent PNGs of flags, jets, drones, tanks and world leaders.