Image Resizer
Resize any JPG, PNG, or WebP image by exact pixel dimensions or by percentage. Everything happens right in your browser — your image is never uploaded to a server.
Click to select an image or drag and drop it here
JPG, PNG, or WebP
How to resize an image
Select or drag an image into the box above. Choose to resize by exact pixel dimensions (with optional aspect ratio lock) or by a percentage scale, pick an output format, then click "Resize Image." Your resized image downloads automatically.
Is it safe? Where does my image go?
Your image never leaves your device. This tool uses your browser's built-in canvas rendering — nothing is uploaded, stored, or sent anywhere.
Frequently asked questions
What's the difference between resizing and compressing?
Resizing changes the image's pixel dimensions (e.g. from 4000×3000 to 800×600), which also reduces file size. Compressing keeps the same dimensions but reduces file size by adjusting quality. If you just want a smaller file at the same dimensions, try the Image Compressor instead.
Why does "Maintain aspect ratio" matter?
It keeps your image from looking stretched or squished. When enabled, changing the width automatically adjusts the height (and vice versa) to match the original proportions.
Which format should I choose?
JPG is best for photos and smaller file sizes. PNG is best when you need transparency or sharp edges (like logos or screenshots with text). WebP offers a good balance of quality and file size for web use.
Choosing the right dimensions
Different platforms have different ideal image dimensions — a LinkedIn banner, an Instagram post, and a website hero image all expect different aspect ratios, and uploading an image that doesn't match often results in awkward automatic cropping. Resizing before upload gives you control over exactly what's visible, rather than letting a platform's auto-crop decide for you.
Resizing versus cropping
Resizing scales the entire image up or down while keeping all the original content visible, whereas cropping cuts away parts of the image to change its shape or focus. If you need to fit an image into a specific aspect ratio without distorting it, cropping (or resizing combined with cropping) is usually the better approach than stretching an image to fit, which can make faces and objects look unnaturally elongated.
Frequently asked questions
Will resizing reduce image quality?
Shrinking an image (making it smaller) rarely causes visible quality loss. Enlarging an image beyond its original resolution can introduce blurriness, since the tool has to invent pixel detail that wasn't in the original file.
What's the difference between resizing in pixels versus percentage?
Pixel-based resizing sets an exact width and height, useful when a platform specifies exact requirements; percentage-based resizing scales proportionally, useful for simply making an image smaller while keeping its original aspect ratio.