Resize images online
Resize one photo or a whole batch to exact pixels, a percentage, or a ready-made social media size. Choose how images fit: keep proportions, crop to fill, add bars or stretch.
Drop files here or click to choose
You can also paste with Ctrl+V
How to use the Image Resizer
- 1
Add your images.
- 2
Pick pixels, percentage or a social media preset and choose how to fit.
- 3
Download the resized images individually or as a ZIP.
Why use the Zenixbase Image Resizer
Social media presets
Instagram posts and stories, TikTok, YouTube thumbnails and banners, Facebook, X and LinkedIn covers.
Four fit modes
Fit inside, crop to fill, pad with a color or stretch: get the exact size without distortion.
Batch resizing
Resize many images in one go with consistent settings.
High-quality scaling
Multi-step downscaling keeps edges sharp and avoids the jagged look of quick resizers.
Frequently asked questions
How do I resize without distorting the image?
Use Fit inside to keep proportions, or Crop to fill to get an exact size by trimming the edges. Only Stretch changes proportions.
What size should an Instagram post be?
1080×1080 for square posts and 1080×1350 for portrait posts. Stories and Reels use 1080×1920. All are available as presets.
Can I make an image larger?
Yes, turn off "Don't enlarge small images". For real detail when enlarging, use the AI Image Upscaler instead.