Image Resizer
Resize photos to exact pixel sizes, a percentage, or popular presets like Instagram posts and YouTube thumbnails. Resize many images at once.
🔒 Your files never leave your device. This tool runs entirely in your web browser. Nothing is uploaded to ToolsCloset or anyone else, so it’s safe for private photos, recordings and videos.
By Shah Rukh, software developer · Last updated:
How to resize an image
- Choose one or more images. The first image’s size fills in the boxes.
- Pick a preset, type a new width or height, or switch to By percentage.
- Press Resize images, then download each image or all of them at once.
Popular image sizes
| Use | Size (pixels) | Shape |
|---|---|---|
| Instagram square post | 1080 × 1080 | 1:1 |
| Instagram portrait post | 1080 × 1350 | 4:5 |
| Stories, Reels, YouTube Shorts, TikTok | 1080 × 1920 | 9:16 |
| YouTube thumbnail | 1280 × 720 | 16:9 |
| Full HD wallpaper or slide | 1920 × 1080 | 16:9 |
| Link preview (Facebook, LinkedIn, WhatsApp) | 1200 × 630 | about 1.91:1 |
Social networks change their recommendations from time to time, so check the platform’s help pages for anything critical.
Fit, crop or stretch?
- Fit inside keeps the whole picture and its proportions. The result may be smaller than the box in one direction.
- Crop to fill gives the exact size you asked for by trimming the edges evenly. It’s best for presets like Instagram squares or thumbnails.
- Stretch forces the exact size and can squash or stretch the picture. Use it only when the shape already matches.
Resizing vs compressing
Resizing changes the number of pixels. Compressing keeps the pixels but stores them more efficiently. For the smallest files, resize first, then use the image compressor. Enlarging a small image above 100% won’t add real detail, so it will look softer.
Frequently asked questions
How do I resize an image without losing quality?
Make it smaller, not bigger, and keep “Fit inside” selected so the proportions stay the same. Save as PNG or WebP for the sharpest result, or JPG for photos.
Can I resize many images at once?
Yes. Add as many images as you like. They’re all resized with the same settings.
Is it safe to resize private photos here?
Yes. Images are resized in your browser and never uploaded.
How do I make an image exactly 1080 × 1080 for Instagram?
Choose the Instagram square preset. It uses “Crop to fill”, so the centre of your photo fills the square exactly.
What size should a YouTube thumbnail be?
1280 × 720 pixels (16:9). Choose the YouTube thumbnail preset.
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