SmartTools Image Tools
Image Compressor
Compress JPG, PNG, and WebP images in your browser. Adjust image quality or aim for a target file size in KB.
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Browser processing
Your image is processed locally in your browser.
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Flexible compression
Adjust quality or choose a target file size.
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Easy download
Download your compressed image instantly.
Note: Compression changes image encoding and quality but does not reduce pixel dimensions. Very small target sizes may not be achievable for every image.
Free Online Image Compressor – Reduce Image Size
SmartTools Image Compressor helps you reduce JPG, PNG and WebP image file sizes directly in your browser. Choose your preferred image quality or set a target file size in KB to create a smaller image that is easier to store, share and upload.
Preview your original and compressed images, compare their file sizes and download the compressed result in JPG or WebP format.
How to Compress an Image Online
- Click Choose Image and select a JPG, PNG or WebP file.
- Choose Quality Mode or Target Size Mode.
- Adjust the quality percentage or enter your target size in KB.
- Select JPG or WebP as your output format.
- Click Compress Image to process your image.
- Preview the compressed image and compare its file size.
- Click Download Compressed Image to save your result.
Image Compressor Features
JPG, PNG and WebP Support
Upload JPG, PNG or WebP images up to 25 MB. Export your compressed image in JPG or WebP format.
Quality-Based Compression
Adjust image quality from 10% to 100%. Lower quality settings can produce smaller files, while higher settings generally preserve more visual detail.
Target Image Size in KB
Enter a target file size in KB and let the compressor estimate a suitable quality setting. The exact target cannot be guaranteed for every image.
Original and Compressed Preview
View your original image alongside the compressed version. Compare file sizes and see the estimated percentage change.
Browser-Based Processing
Image compression is performed locally in your browser using the browser's image and canvas capabilities. The selected image is not uploaded to a SmartTools server by this tool.
Frequently Asked Questions
1. How can I reduce image size online?
Upload your image, select a compression mode, adjust the settings and click Compress Image. You can then download the compressed result.
2. Which image formats are supported?
You can upload JPG, PNG and WebP images. The available download formats are JPG and WebP.
3. Can I compress an image to 200 KB?
Yes. Select Target Size Mode and enter 200 KB. The tool attempts to get close to your target, but the final size depends on the image.
4. Does image compression reduce dimensions?
No. This compressor changes image encoding and quality. It does not reduce the original pixel width or height.
5. What is the maximum upload size?
The current maximum image file size is 25 MB.
6. Is my image uploaded to a server?
No. This tool processes the selected image locally in your browser and does not upload it to a SmartTools server.
7. Can every image reach my target KB size?
No. Some images cannot reach very small target sizes using quality adjustment alone. The tool displays a message when the requested target is not achieved.
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