Images · Luna4Compress images
Upload an image and Luna4 will automatically optimize it to a recommended quality. Just check and download.
Compress without sending the image to another service
The tool works in the browser. You can check the quality or indicate a target size, check the final weight and visually compare the original with the result before downloading.
Which mode to choose?
- Choose quality: directly controls the balance between detail and weight.
- Target size: automatically searches for the best possible quality near the indicated limit.
- Reduce dimensions: is optional and is only used when the target cannot be achieved with compression alone.
Frequently Asked Questions
Does compress change dimensions?
The tool can optimize the image and limit extremely large dimensions to avoid excessive memory consumption, but its main goal is to reduce weight.
Will it always be smaller?
No. If the file is already highly optimized, a new compression may save little. Luna4 shows the result so you can decide.
What format is best for photos?
JPG and WebP are often practical options for photographs. PNG is especially useful when you need transparency or graphics with sharp edges.