Tip: Smart mode keeps JPG as JPG and turns PNG into WebP, which is much smaller and keeps transparency. For very large photos (4000 px or more), also set a max width such as 1920.
Related SmartTool Tools
For related tasks, you can also use these free tools:
>How to Compress an Image
Upload an image, choose the available compression settings, and download the optimized result. Image compression reduces file size while aiming to preserve useful visual quality.
Why Compress Images?
Smaller image files can be easier to store and share and may help reduce page weight when images are prepared for a website.
Image Compression Tips
- Use the highest quality that still gives you a useful file size.
- Compare the output dimensions and file size before publishing.
- Keep an original copy when the image is important.
Frequently Asked Questions
Does compression always reduce file size?
The result depends on the original image, format and selected settings. Some images are already optimized and may show little or no reduction.
Will image compression reduce image quality?
Lossy compression can reduce some visual detail, while the quality setting lets you balance file size and appearance. Always preview the result before replacing an important original.
Are my images uploaded to a server?
This tool processes supported images in your browser. Your selected files are not sent to SmartTool.site for compression.
Which image formats can I compress?
The tool accepts the image formats shown in its upload area. The available output options depend on the browser and settings used by the tool.
Related Image Tools
Image Resizer · Image Cropper · JPG & PNG Converter · Background Remover · Image Tools