Image Size Increase
Increase your image size to the exact KB you need. Great for forms and applications that need a minimum file size.
Drop images here or click to select
JPG · PNG · WEBP · Multiple files supported
How it works
Upload your image
Drag and drop JPG, PNG or WEBP images or click to select from your device.
Pick a mode
Choose quality, target size in KB (to reduce or increase), or exact pixel dimensions.
Download instantly
Click Process and download your resized images — everything runs in your browser.
Frequently Asked Questions
Is this image size tool free?+
Yes — 100% free with no signup, no watermark, and no limits on the number of images.
Can I reduce an image to a specific KB size like 100KB?+
Yes. Switch to Target KB mode and set the size — the tool auto-tunes quality and dimensions until the image fits.
Can I increase image size in KB?+
Yes. Use the Increase to KB mode. The tool upscales dimensions and quality until the file matches your target.
Are my images uploaded to a server?+
No — all processing happens locally in your browser using Canvas. Your images never leave your device.
Which formats are supported?+
JPG, PNG and WEBP for both input and output. You can also convert between formats while resizing.
Does it work on mobile?+
Yes, it works in Chrome, Safari, Firefox and Edge on both desktop and mobile devices.