Image Resizer
Resize PNG, JPG and WebP images to exact dimensions while keeping quality.
Drop an image here
PNG, JPG or WebP — up to 20 MB
How to use
- 1Upload a PNG, JPG or WebP image from your device.
- 2Enter the target width and height — lock the aspect ratio if you want.
- 3Tap Resize and download the new image.
How Does Image Resizing Work?
Image resizing changes the pixel dimensions (width and height) of a picture. Our free resizer tool uses the native Canvas API to redraw the image in high-quality bilinear filtering, all in your browser window. This ensures speed, security, and guarantees your personal images are never uploaded to any remote server.
When to Resize vs Compress
Resizing changes the physical size (e.g. changing 4000x3000 down to 1080x810 for social media uploads). Compression reduces the data size in KB or MB (e.g. optimizing byte maps) while keeping the same pixel dimensions. For the best web performance and SEO, you should **resize first** to the correct layout dimensions and then **compress**!
Frequently Asked Questions
Will resizing my image reduce its quality?+
No, reducing image size (scaling down) keeps details sharp. However, scaling an image up beyond its original dimensions can cause stretching, blurriness, or pixelation.
What does 'Lock aspect ratio' mean?+
It locks the proportion between width and height. For example, if you have a square 800x800 image and change width to 400, locking the aspect ratio automatically scales height to 400 so the image doesn't look squished.
What are standard web image dimensions?+
Common dimensions include: Full-HD (1920x1080), Instagram post (1080x1080), YouTube thumbnail (1280x720), and standard web banners (1200x630).