Image Resizer & Cropper
2. Resize or Crop
Resize
Crop
Adjust the selection on the image above.
Adjust the selection on the image above.
Upload, resize or crop. Lock aspect ratio. Enter dimensions or drag crop box. Download result.
Resize for social media/email/web. Crop to focus. No Photoshop needed.
Yes, lock to scale proportionally.
~10,000x10,000 on typical devices.
Yes, 1:1, 16:9, 4:3 etc.
Reducing preserves; enlarging may blur.
Resizing changes the image dimensions (e.g., 4000x3000 pixels becomes 1000x750). It scales the entire image down, keeping the aspect ratio and content intact. Cropping removes parts of the image — typically to improve composition, change the aspect ratio, or focus on a specific area. You might resize a 4000px-wide photo to 1200px to send via email, but crop a square version for Instagram and a 16:9 version for YouTube thumbnails.
Different platforms need different sizes: Instagram square posts (1080x1080), Instagram portrait (1080x1350), Instagram story (1080x1920), Facebook cover (820x312), Twitter/X post (1200x675), LinkedIn post (1200x627), YouTube thumbnail (1280x720), website hero image (1920x1080), email header (600x200). Getting sizes right prevents ugly cropping by the platform and reduces file size for faster loading.
Image size (pixels) and file size (KB/MB) are different things. A 4000x3000 image saved as JPEG can be 5MB. The same image resized to 1000x750 might be 300KB. Most platforms compress uploaded images anyway, so uploading a smaller source often produces better-looking results than uploading a huge one. For web, aim for images under 200KB to keep page load fast.
Resize and crop images to exact pixel dimensions with the Toolzie Image Resizer & Cropper. Maintain aspect ratio, set custom dimensions, and crop to a specific region — all without uploading to any server.
Reducing image size generally maintains quality. Enlarging an image beyond its original size can cause pixelation.
Yes — enter the width and lock the aspect ratio, or manually set both dimensions.
Export as JPG, PNG, or WebP.
No — all processing happens locally in your browser.