Image Size Resizer
Reduce image file size and resize dimensions right in your browser—no server upload required.
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About Free Online Image Size Resizer (JPG, PNG, WebP)
Shrink image file sizes in KB/MB and resize pixel dimensions directly in your browser without uploading photos to any server.
How to Use
- Click the upload area to choose a JPG, PNG, or WebP image from your device.
- Adjust the Quality slider, pick your target format (WebP, JPG, or PNG), and optionally set a Max Width.
- Compare original vs. compressed size and click Download Image.
Key Features & Benefits
- Reduces image weight by up to 70-90% for faster website loading, Core Web Vitals, and email attachments.
- Convert heavy PNG/JPG photos into modern WebP format for better Google PageSpeed scores.
- Zero server uploads—all compression happens locally via HTML5 Canvas.
Frequently Asked Questions
Are my photos uploaded to a server?
No. Image compression runs 100% locally in your browser, so your photos never leave your device.
No. Image compression runs 100% locally in your browser, so your photos never leave your device.
Which output format gives the smallest file size?
WebP generally produces the smallest file size while maintaining sharp visual quality.
WebP generally produces the smallest file size while maintaining sharp visual quality.