About Image Compressor
Image Compressor makes pictures smaller so they upload faster, fit within email limits and load quickly on websites. Pick a quality, optionally set a maximum width, and choose JPG or WebP for the result.
You see the original size and the new size next to each image, so you can find the balance between a small file and good looks.
How to use Image Compressor
- Select one or more images (JPG, PNG or WebP), or drag them onto the upload area.
- Set the quality with the slider. Lower values give smaller files.
- Optionally enter a maximum width in pixels to make large photos smaller.
- Choose the output format: JPG or WebP.
- Download each compressed image with its Download link. Settings apply to images you add after changing them.
Key features and benefits
Quality slider
Choose between 10% and 100% quality to control the trade-off between size and detail.
Resize as you compress
A maximum width shrinks high-resolution photos, which usually saves the most space.
JPG or WebP output
WebP is usually smaller at the same quality, and JPG opens in every program.
Instant comparison
Each result shows the original size, the new size and the percentage saved.
Supported formats and limits
| Input | JPG, PNG, WebP and other images your browser can open |
|---|---|
| Output | JPG or WebP |
| Transparency | JPG output uses a white background. WebP output keeps transparent areas. |
| Metadata | Camera information such as location is not copied into the compressed file. |
Practical ways to use it
Email and messaging
Reduce photos so they send quickly and fit attachment limits.
Website images
Make pictures lighter so pages load faster on mobile connections.
Form uploads
Meet the size limit of an application or marketplace upload.
Free up storage
Shrink a folder of large phone photos.
Tips for better results
- Quality around 70% to 80% usually looks the same to the eye and saves a lot of space.
- Setting a maximum width of 1600 to 2000 pixels is enough for most screens and often cuts the file size dramatically.
- Use WebP for websites, and JPG when you need the widest compatibility.
- If a result is not smaller, the image was already compact. Try a lower quality or a smaller width.
Privacy and file handling
Images are compressed in your browser. They are read and re-encoded on your own device and are not uploaded to UsePDF.online. Compressed images exist only in your browser until you download them.
The page itself and the processing libraries are loaded from the internet when you open the tool. Your files are not part of those requests. See our Privacy Policy for the full details.
Troubleshooting
The result is not smaller
The original may already be well compressed. Lower the quality or set a smaller maximum width.
The image looks blurry
Raise the quality or remove the width limit.
My transparent PNG got a white background
JPG cannot store transparency. Use WebP output instead if you need to keep a transparent look in a modern browser.
Frequently asked questions
Will compressing reduce image quality?
Some detail is lost at lower qualities. At 70% to 80% most photos look the same to the eye while the file gets much smaller.
Can I compress several images at once?
Yes. Select or drop as many as you like. Each one gets its own result and download link.
Why is my PNG now a JPG?
This tool outputs JPG or WebP. JPG is smaller for photos, but it cannot keep transparency.
Are my images uploaded?
No. Everything happens in your browser.
