Free • Private • Browser-based
Enter a target size and Crucialio will search for a JPEG quality level that fits under it when possible.
Compress an image toward a target file size in KB. Runs locally in your browser and outputs JPEG.
Drop an image hereor click to choose a JPG, PNG or WebP
How it works
Target-size compression is approximate. Very small targets can be impossible without also reducing image dimensions.
Why use Crucialio?
This tool is designed for quick one-off image jobs with no account requirement. Processing for supported files happens on your device, which also avoids waiting for uploads and downloads before the work begins.
Frequently asked questions
Are my images uploaded?
For the tools on this page, image processing happens in your browser. Your selected image does not need to be uploaded to Crucialio.
Is there a watermark?
No. Crucialio does not add a watermark to downloaded images.
What does this enter a target size and crucialio will search for a jpeg quality level that fits under it when possible. tool do?
Target-size compression is approximate. Very small targets can be impossible without also reducing image dimensions.