What is the Image Compressor?
The Image Compressor shrinks the file size of your photos right in your browser. Choose an image, set the quality with a slider and the tool re-saves it as a smaller JPEG while showing you the original and new sizes. Because the work happens on your device, your pictures are never uploaded to a server.
How to use the Image Compressor
- Click Choose image and select a photo from your device.
- Drag the quality slider; lower values give smaller files and higher values keep more detail.
- Compare the original and new sizes shown above the preview.
- Long-press or right-click the preview image and save it to your device.
Benefits and use cases
- Website owners speeding up pages with lighter images.
- Job and visa applicants who must upload photos under a size limit.
- Anyone sending pictures by email or chat on a slow connection.
- Photographers and bloggers saving storage space.
Tips for best results
Start at around 70 percent quality and lower it step by step until you notice a loss. Photos compress better than screenshots and graphics with sharp text, so use a higher setting for those. Keep your original file as a backup, because compression removes detail that cannot be restored. Smaller images also help pages load faster on mobile data.
ToolZen tools run in your browser, so your input is not uploaded to a server. Bookmark this page and come back whenever you need it. There is nothing to install and no account to create.
Frequently asked questions
Are my photos uploaded?
No. Compression happens in your browser, and your images stay on your device.
Which format is the output?
The compressed image is saved as a JPEG, so transparent areas in PNG files may turn dark.
What quality should I choose?
Between 60 and 80 percent usually gives a big size reduction with little visible loss.
Will the image dimensions change?
No. The width and height stay the same. Only the quality and file size change.