Resize Image Online
Resize images by exact dimensions or percentage. Keep proportions, reduce file size and export instantly.
Upload an image to resize
Resize image by pixels or percentage with aspect ratio control
JPG · PNG · WebP · AVIF · GIF · BMP · HEIC · TIFF · Up to 50 MB
Resize images online by setting exact pixel dimensions or scaling by percentage without using heavy design software. Adjust width and height, keep aspect ratio locked and export in JPG, PNG or WebP. Perfect for reducing image size, preparing images for websites, social media, uploads or performance optimization.
How to resize an image online
- Upload your image from your device.
- Choose resize mode: Pixels to set exact width and height, or Percent to scale the image proportionally.
- Enable ratio lock to keep the original proportions and avoid image distortion.
- Select output format (JPG, PNG or WebP) and adjust quality if needed.
- Click "Resize Image" and download the resized file instantly.
Why use this Image Resizer
Set precise width and height in pixels for web images, uploads, thumbnails or design requirements.
Resize images proportionally by percentage to quickly reduce or enlarge images without recalculating dimensions.
Lock width and height ratio to prevent stretched or squashed images when resizing.
Export resized images as JPG, PNG or WebP and reduce file size for faster loading and better performance.
Supported formats
100% browser-based
Frequently asked questions
Reduce image dimensions moderately (for example 50–80% of original size) and export with high quality (80–90%). Avoid enlarging images, as this can reduce sharpness.
Select Pixels mode, enter the desired width and height values, enable ratio lock if needed, and resize the image instantly.
Pixels mode sets exact dimensions. Percentage mode scales the image relative to its original size, which is faster when you do not need exact values.
Yes. Smaller dimensions reduce total pixels, which usually decreases file size significantly — often by 50–90% depending on settings.
Yes. Enable the aspect ratio lock to keep the image proportions and avoid distortion.
You can enlarge an image, but it may become slightly blurry. For best results, avoid scaling above 120–150% of the original size.
Use JPG for photos, PNG for graphics and text, and WebP for smaller file size with good quality.
This happens when width and height are changed independently. Enable ratio lock to keep proportions correct.
Yes. All processing happens locally in your browser. Your images are never uploaded or stored.