Image Compressor
Compress images without losing quality.
Configuration
Click to upload or drag and drop
All files supported (Max: 5MB)
About Image Compressor
Reduce the file size of your JPEGs and WebPs instantly securely in your browser.
How to use Image Compressor
- Upload your image (JPEG, PNG, or WebP) by dragging and dropping it into the dropzone.
- Select a preset compression mode (like Balanced or High Quality), or choose Custom to manually adjust the slider.
- Click Compress Image to process the file instantly inside your browser.
- Compare the before and after sizes, then download the optimized image.
Best Practices
- Set an appropriate target file size based on image dimensions, format, and context (for example, you might aim for around 100KB for large hero images, but thumbnails should be much smaller).
- Test the visual difference between 80% and 90% quality; around 80% can be a useful starting point for many images.
- Compress images only once. Compressing an already heavily compressed JPEG will introduce severe artifacting.
Benefits
- Dramatically reduce image file sizes.
- Reduce image transfer size to improve page-loading performance, which can potentially contribute to better Core Web Vitals.
- Save on hosting bandwidth costs by serving smaller image payloads.
- Enjoy complete privacy with zero-server local processing—your files never leave your device.
Common Mistakes to Avoid
- Over-compressing an image (e.g., dropping quality below 50%) just to get the smallest file size, resulting in heavy pixelation and blocky artifacts.
- Uploading a massive 4K raw photo to compress it without resizing it first—always resize dimensions before applying compression.
- Choosing the wrong format for the job (e.g., trying to compress a simple graphic with flat colors as a JPEG instead of converting to PNG or WebP first).
Frequently Asked Questions
What is the best compression quality setting to use?
Around 80% can be a useful starting point for many images, but the best setting depends on the image, desired quality, and target file size.
Does image compression reduce the physical dimensions of my image?
No. Image compression reduces the file size (in KB/MB) by removing hidden data and slightly lowering visual fidelity. The pixel dimensions (width and height) remain exactly the same.
Is my image uploaded to your servers for compression?
No. Our Image Compressor uses client-side processing, meaning the entire compression process happens securely inside your own web browser. No files are ever uploaded or stored.
What is the difference between lossy and lossless compression?
Lossy compression (like standard JPEG compression) permanently removes some data to achieve smaller file sizes, resulting in a slight drop in quality. Lossless compression reduces file size without losing any visual data, but the savings are much smaller.
Can I compress PNG files with this tool?
Yes, our tool supports PNG compression. However, if your PNG is a photograph, converting it to JPEG or WebP first will yield much better compression results.
Why does my compressed image look blurry or blocky?
If an image looks blocky (artifacting), the quality slider was set too low. Try increasing the quality to 80% or 90% and compressing the original file again.
Does compressing an image strip EXIF metadata?
Browser-based canvas re-encoding generally does not carry the original EXIF metadata (such as camera settings or location data) into the newly generated output file.
In-Depth Guide Available
Learn how to get the most out of Image Compressor with our step-by-step editorial tutorial.