Choose a photo and select a width and height if needed.
✳ FILE SIZE RESIZER
Resize an image to a target KB.
Need a photo under 100 KB or 200 KB? Enter your approximate target file size and let the browser find a smaller JPG or WebP encoding.
✓ Free forever✓ No signup✓ Private resizing
PRIVATE BY DESIGN
◈ On-deviceResize your images
Choose a photo, set your size, and download. Your files never leave this device.
Drop your images here
or select from your device to get started · Ctrl/⌘+V to paste
JPG, PNG, WebP · Up to 25 MB each · 20 images max✓ No account needed✓ No watermark✓ Files stay on your device
MADE SIMPLE
Image file size is not the same as pixel size
The width and height of an image are measured in pixels, while its saved file size is measured in bytes or KB. Compression, detail, image format, and dimensions all influence how large a file becomes.
The target-KB mode attempts a bounded search through JPG or WebP quality settings. A strict size is not guaranteed at any chosen dimensions. If it cannot fit, you will see a warning and can lower the dimensions to try again.
FOUR EASY STEPS
How it works
Get exactly the result you need, with no learning curve.
Open Target file size and pick 50 KB, 100 KB, 200 KB, 500 KB or a custom value.
Choose JPEG or WebP. PNG does not offer a precise quality-based size target here.
Resize, review the actual KB value, and download.
BUILT FOR THE DETAILS
Just the tools you need
Preset KB targets
Start with common limits such as 50 KB, 100 KB or 200 KB.
Visible real output size
View the encoded result rather than relying on a promised target.
Clear failure warnings
If the requested size cannot be achieved, the tool tells you what happened.
GOOD TO KNOW
Frequently asked questions
How can I resize a picture to 100 KB?
Use Target file size, select 100 KB, and export to JPG or WebP. If the result is too big, lower the pixel dimensions and try again.
Can JPGResizer guarantee exactly 50 KB?
No. The encoded size depends on the image and browser. The tool reports whether the target was met.
Does lowering image quality reduce KB?
Usually yes for JPEG and WebP. Complex images can still remain large at lower quality; reducing their dimensions may also be necessary.
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