by Compress Image to 400KB (JPG)
Free online image compressor to precisely compress images to 400KB. Supports cropping, resizing, and secure processing with auto-delete.
How to compress an image to 400KB
- Open the tool and upload your image.
- Set target size to 400KB (slider pre-selected).
- Optionally crop or resize for best results.
- Click Compress and download the optimized JPG.
Why 400KB?
400KB is ideal for faster uploads, email attachments, and forms that require small file sizes, while maintaining visual quality.
Best practices to hit 400KB with good quality
Near-original clarity at ~2600–2800px; preserve textures and text readability.