Quickly and easily image compressor online for free.

Compression Settings

Choose Image

Drag & drop or click to select

Supports JPG, PNG, WebP

80%

Lower quality means smaller file size but reduced image clarity.

Preview

Compare size and quality

Upload an image to see the preview

How to compress an image online

1

Upload image

Select or drag and drop a JPG, PNG, WebP, GIF or BMP image into the upload area.

2

Choose compression preset

Pick light, balanced, strong or custom compression depending on whether you prefer quality or smaller file size.

3

Select output format

Choose JPG, PNG or WebP output. WebP is often best for small web images, while JPG is useful for photos.

4

Adjust size and quality

Set quality and maximum width if you want to reduce large images while keeping the aspect ratio.

5

Preview and download

Compare the original and compressed image, then download the optimized file.

For most images, start with Balanced compression. Use Strong compression when you need the smallest possible file for online forms, job portals or email attachments. Use Light compression when image clarity matters more than file size.

WebP usually gives a very good size-quality balance for websites. JPG is useful for photos and screenshots without transparency. PNG is better when you need transparency or sharper graphic elements.

Best use cases

  • Compress product images for ecommerce listings.
  • Reduce screenshots and photos before email sharing.
  • Optimize blog and website images for faster loading.
  • Make images smaller for online forms and portals.
  • Compress social media images before uploading or sharing.
  • Convert large PNG files to smaller JPG or WebP outputs.

Image compression tips

  • Use WebP for a strong balance of quality and small size.
  • Use JPG for photos where transparency is not required.
  • Use PNG when transparency or sharp graphics are important.
  • Reduce maximum width for very large camera photos.
  • Preview the output before using it for important work.
  • Use original dimensions only when exact size must be kept.

Important note

Lower quality settings create smaller images but may reduce visual clarity. Review the compressed image before sharing it, uploading it to a website or using it for official submissions.

The original file remains unchanged. Some animated GIFs may be loaded as a still frame depending on browser canvas support. Very large images may process more slowly on low-memory devices.

Image Compressor FAQ

Is this image compressor free to use?
Yes. SmartTools Image Compressor is free to use online for reducing JPG, PNG and WebP file size.
Does this tool upload my image to a server?
The tool is designed for browser based processing, so your image can be compressed directly in your browser without unnecessary upload delay.
Which image formats are supported?
You can upload common image formats such as JPG, PNG, WebP, GIF and BMP, and export optimized output as JPG, PNG or WebP.
Which output format should I choose?
Use WebP for small web friendly images, JPG for photos and screenshots without transparency, and PNG when you need transparency or sharper graphics.
Will image quality reduce after compression?
Lower quality settings create smaller files but may reduce visual clarity. Balanced compression is a good starting point for most images.
Can I resize the image while compressing?
Yes. You can set a maximum width to reduce large images while keeping the aspect ratio, or keep original dimensions if you only want format/quality compression.
Can I rename the compressed image?
Yes. You can set an output file name before downloading the compressed image.
Will the original image change?
No. The original image remains unchanged. The tool creates a new compressed image file for download.

About

Use our free to quickly and easily process your files. Our tools are secure, running locally in your browser when possible or processing on secure servers with immediate deletion.

How to use

  1. Upload or paste your input into the workspace above.
  2. Configure any available options to suit your needs.
  3. Click execute and download your results instantly.