Resizing images to an exact size can be frustrating, especially when websites or forms demand strict limits. Our Resize Image to 40KB tool on imageresizer.uk makes it easy. Just upload your image, choose your settings, and download a perfectly resized image in seconds no technical skills needed.
Resize Image to 40 KB
Upload an image and resize it easily while keeping good quality
Why Resize Images to 40KB?
Many online platforms require images under a specific size limit. A 40KB image is commonly needed for:
- Online forms and applications
- Profile photos and ID uploads
- Website performance optimization
- Email attachments
- Government and exam portals
Large images can slow down websites and get rejected during uploads. This tool solves that problem instantly.
How the Resize Image to 40KB Tool Works
Our tool uses smart compression and resizing techniques to reduce file size while keeping the image clear and sharp.
Simple Steps to Use
- Upload your image (JPG, PNG, or WEBP)
- Select a resize method
- Enter your value (40KB by default)
- Choose output format
- Click Resize Image
- Download the resized image instantly
Everything happens directly in your browser. Your files are never uploaded to any server.

Available Resize Options
You can resize images in multiple ways depending on your needs.
| Resize Method | Description |
|---|---|
| Target File Size (KB) | Automatically adjusts quality to reach 40KB |
| Resize by Width | Set custom width in pixels |
| Resize by Height | Set custom height in pixels |
| Resize by Percentage | Scale image up or down by percentage |
This flexibility makes the tool useful for both beginners and advanced users.
Supported Image Formats
You can convert and resize images into popular formats:
| Format | Best For |
|---|---|
| JPEG | Photos and web uploads |
| PNG | Images with transparency |
| WEBP | Smaller size with high quality |
You can also change the image format while resizing to get better results.
Key Features of Resize Image to 40KB Tool
- ✅ Resize images accurately to 40KB
- ✅ Maintains good image quality
- ✅ Works on mobile, tablet, and desktop
- ✅ No watermark added
- ✅ No registration required
- ✅ 100% free to use
- ✅ Fast processing directly in browser
Image Quality & Smart Compression
When you choose Target File Size (KB), the tool automatically adjusts image quality step-by-step until it reaches close to 40KB. This ensures:
- No unnecessary blur
- Balanced sharpness
- Optimal compression
You get the smallest file size without ruining the image.
Safe, Private & Secure
Your privacy matters.
- Images are processed locally
- No uploads to external servers
- No image storage or tracking
- Files disappear after page refresh
You stay fully in control of your data.
Who Can Use This Tool?
This Resize Image to 40KB tool is useful for everyone. Students can upload documents easily, job seekers can submit forms without errors, and web developers can optimize images for faster pages. Designers can resize images quickly, and anyone who needs a fast image resize can use it. No technical skills needed just upload and resize.
Why Use ImageResizer.uk?
ImageResizer.uk is built for speed, simplicity, and accuracy. Our tools are designed to help users resize, compress, and convert images easily without complicated steps or ads.
If you need a quick and reliable way to resize images to 40KB, this tool is the perfect choice.
