Compress Image File Size Online While Preserving Quality
Reduce image file size while controlling the final quality level.
Clear interfaceSimple steps and a direct result
Fast performanceBuilt for mobile and desktop
Privacy firstProcessing stays on your device
Compress Image File Size Online While Preserving Quality
Compress Image File Size with Quality Control
Nujiz Image Compress creates a smaller image file while giving you control over output quality and format. The tool provides compression presets as well as manual quality control and displays an estimated output size before the final file is encoded.
When Auto is selected, the tool uses WebP because it generally provides efficient browser-side compression with good visual quality. Other available formats can also be selected. The real file size is known only after encoding, so the pre-processing size estimate is approximate.
How to Use This Tool
- Choose an image.
- Select a compression preset or set quality manually.
- Choose an output format or Auto.
- Review the estimated size and process the image.
- Check the result and download the compressed file.
Important Notes for Better Results
Very low quality values can introduce visible compression artifacts. PNG does not use the quality value in the same way as JPEG or WebP, so output size and appearance can vary substantially by format and image content.
Frequently Asked Questions
Is the estimated output size exact?
No. It is an approximation; the actual size is known after the image has been encoded.
Which format does Auto compression use?
Auto uses WebP for efficient browser-side compression.
Can I control compression quality?
Yes. You can use a preset or adjust the quality setting manually.
Does compression automatically resize the image?
No. The compression operation re-encodes the image without changing its dimensions simply because compression was selected.
Is compression processed in the browser?
Yes. The compressed output is generated in your browser.