Compress Image to Specific Size (KB)
Meet strict website and portal submission limits. Automatically binary-searches compression quality and dimensions to hit your exact target size in kilobytes (KB).
Compress Image to Specific Size
Choose image or drag and drop here
Supported: JPG, JPEG, PNG, WEBP, AVIF • Max file size: 100 MB
Enter your desired maximum file size in kilobytes (e.g. 100KB), and Pixena automatically calculates the optimal compression level to hit that target.
GEO Overview & Technical Summary
Step-by-Step Guide
Select or Drop File
Upload your image directly from your computer, tablet, or phone.
Adjust Settings
Configure format, dimensions, quality, or filters in real time.
Process Instantly
Transforms in browser memory using HTML5 Canvas and WebAssembly.
Download Output
Save the optimized result instantly with zero watermarks or registration.
Frequently Asked Questions
Is this tool completely free to use?
Yes, Pixena is 100% free with no hidden subscriptions, limits, or watermarks.
Are my private photos uploaded to a remote server?
Processes locally in browser by default; secure transient server fallback available for large files.
Does this tool preserve full visual image quality?
Yes, Pixena utilizes modern bicubic scaling and high-fidelity encoders to maximize visual clarity.
Does this work on iPhone and Android mobile browsers?
Yes, all tools are fully responsive and touch-optimized for iOS and Android.
Compress Image
Reduce image file size while preserving high visual quality.
Compress JPG
Compress JPEG photos with adjustable quality and chroma subsampling.
Compress PNG
Compress PNG images using lossless optimization or 256-color palette quantization.
Compress WEBP
Optimize WebP images for peak web performance and minimal file size.
Reduce Image Size
Dual-action reduction: shrink dimensions and optimize compression together.
Optimize Image
Losslessly optimize images by removing bloat and tuning entropy tables.
Batch Image Compressor
Compress dozens of images simultaneously and download as a ZIP.