Image tools
Compress Image Online
Compress images to JPEG with adjustable quality. Transparent areas become white.
- Free to use · no account required
- Processes input in your browser
- Keep your original files
Choose your image
Your image never leaves your device. It is compressed in your browser and nothing is uploaded.
Step by step
How to use Compress Image Online
Prepare your input
Choose an image you want to export as a smaller JPEG.
Run the tool
Set a quality from 10 to 100, then select Process image.
Check and use the result
Compare the reported output size and inspect compressed-image.jpg before using it.
How this tool works
Choose your image, set any available options, and select Process image. Your browser handles the conversion. Images are not intentionally sent to the ToolTama server by this tool.
Good to know
Frequently asked questions
Will the output always be smaller?
No. JPEG output can be larger for some originals. Transparency becomes white, and lower quality can introduce visible artifacts.
Is Compress Image Online free?
Yes. This public tool does not require an account, payment or subscription.
Where is my input processed?
The tool-specific processing runs in your browser. Website delivery still involves hosting requests; see the privacy policy for details. Read the privacy policy.
How do I reduce an image’s file size?
Select an image, set the quality (75 to 85% is a good start for photos) and choose Process image. The tool shows the original size, the new size and the percentage saved, and downloads compressed-image.jpg.
What quality setting should I use?
For photos on websites and email, 70 to 85% usually looks the same to the eye at a much smaller size. Use 90% or more for printing. Below 60%, blocky artefacts start to show.
Why did my compressed image get bigger?
This tool saves JPG files. Graphics, screenshots or images that are already heavily compressed can grow when re-saved as JPG. For those, try the WebP converter instead.
What happens to transparent backgrounds?
JPG does not support transparency, so transparent areas become white. Keep logos with transparency as PNG or WebP.
Why use this tool
Compress JPG and PNG images online, without uploading them
Smaller images load faster, fit email attachment limits and pass the size caps on job portals, government forms and marketplaces. A 4 MB phone photo often drops below 500 KB at 80% quality with no visible difference.
Most image compressors upload your pictures first. ToolTama compresses them inside your browser, so family photos, ID scans and product shots stay on your device.
Your privacy: Your image never leaves your device. Read how we protect your files.
Next step: make the image smaller in pixels too with resize image online, switch to a modern format with convert image to WebP, or check the result with the image dimensions checker. Learn more about formats in Google’s image format guide.