Image Size Reducer (KB/MB Target)
Compress image file sizes to meet target limits (e.g. 50KB or 100KB).
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How to Use Image Size Reducer
Select an Image
Click on the file upload zone and choose an image file (PNG, JPG, or JPEG) to compress.
Set Target Size (KB)
Enter the maximum allowed size (e.g. 50KB or 100KB) required for your document or upload form.
Compress Locally
Click "Compress Image". The tool runs a local loop adjusting quality compression to match your target.
Download Compressed File
The reduced image will automatically download to your device under the specified file size limit.
Frequently Asked Questions
The tool uses a smart compression loop. It renders the image to canvas and compresses it as a JPEG file, checking the size. If the size exceeds your target, it reduces the JPEG quality by 10% and repeats the process until the target threshold is met.
If you specify an extremely small target size (e.g. 10KB) for a very large high-resolution photo, the compression loop will reduce image quality significantly to meet the limit. We recommend target sizes of 50KB to 200KB for standard web forms to maintain visual clarity.
Yes. The compression runs entirely on your local machine using standard HTML5 Canvas API in your browser. No image data is sent to our servers, keeping your documents and personal pictures private.