Whether you need a photo to fit an exact pixel size for a website, want to scale an image proportionally, or need to target a specific file size, resizing shouldn't require installing software. Our Image Resizer lets you resize JPG, PNG and WEBP images online for free using pixels, percentage, or target file size.
Why Resize an Image?
Image resizing changes the dimensions (width and height) of a photo or graphic. Here's why you might need it:
- Website images — Match the exact dimensions your site layout requires
- Profile pictures — Social platforms often need specific square sizes
- Faster loading — Smaller dimensions mean smaller file sizes and faster pages
- Print requirements — Some print services need exact pixel dimensions
- Email & forms — Many upload forms reject oversized images
How to Resize an Image — Step by Step
Using Mishu ❤️ PDF's Image Resizer, you can change your image dimensions in just 4 easy steps:
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Open Image Resizer Tool
Visit our free Image Resizer — no account or software needed. -
Upload Your Image
Click "Select Image" or drag and drop your JPG, PNG or WEBP file. -
Choose Resize Mode
Choose Pixels for exact dimensions, Percentage to scale proportionally, or File Size to target a specific output size. -
Set Your Target & Download
Enter your dimensions, percentage, or target file size, then click "Resize Image" to download the resized image.
Resize Your Image Now — It's Free! 📐
No signup or software installation required. Resize your image directly in your browser.
📐 Open Image ResizerTips for Best Resize Results
Always keep the aspect ratio locked unless you specifically need to stretch an image. This prevents your photos from looking squashed or distorted.
Pixel, Percentage & File Size Modes
Choose the mode based on what you already know:
- Pixel mode — Use this when you know the exact dimensions required, like 1200x630 for a social media banner
- Percentage mode — Use this when you just want to make an image smaller or bigger without calculating exact numbers
- File Size mode — Use this when you need the output image to stay close to a specific target size in KB or MB
Common Resize Dimensions
Some useful reference sizes for common use cases:
- Profile picture — 500x500px or 1000x1000px (square)
- Website banner — 1200x630px
- Instagram post — 1080x1080px
- Passport photo — 413x531px (varies by country)
When to Avoid Enlarging Images
Making an image larger than its original size (above 100% scale) can make it look blurry or pixelated, since the tool has to "guess" extra pixel data that wasn't there originally. For best quality, only enlarge images slightly, and avoid doubling or tripling the original size.
Frequently Asked Questions
Is the Image Resizer tool completely free?
Yes. Mishu PDF's Image Resizer is free to use and does not require an account.
What's the difference between pixel and percentage resize?
Pixel mode lets you set an exact width and height. Percentage mode scales the image proportionally based on a percentage of its original size.
Will resizing distort my image?
Keeping the aspect ratio locked helps maintain the original proportions when you change the image dimensions.
Are my uploaded images safe and private?
Yes. Image resizing is performed directly in your browser, so your selected image does not need to be uploaded to a server.
Can I resize an image to a specific file size?
Yes. File Size mode lets you set a target size in KB or MB and automatically adjusts image quality or dimensions to get as close as possible to the target.
Which image formats are supported?
The Image Resizer supports JPG, PNG, and WEBP images.