Image Compressor
Drop in a JPG, PNG or WebP and shrink it. Adjust quality and download — your file never leaves the browser.
What is Image Compression?
Image compression reduces the file size of an image by removing or approximating data while keeping the image visually acceptable. Smaller images load faster, consume less storage, and cost less bandwidth — critical factors for Core Web Vitals (LCP) and SEO.
This tool compresses JPEG, PNG, and WebP images directly in your browser using the Canvas API. No upload needed — your image stays on your device.
How to compress an image online
- Click Choose file or drag and drop your image into the upload area.
- Adjust the quality slider (lower = smaller file, higher = better quality).
- The compressed image and file size reduction appear instantly.
- Click Download to save the compressed image.
Frequently Asked Questions
What is the difference between lossy and lossless compression?
Lossy compression (JPEG) permanently removes some data to achieve large size reductions; quality degrades slightly but is often imperceptible at high quality settings. Lossless compression (PNG with optimisation) reduces file size without any quality loss.
What quality setting should I use for web images?
For JPEG images on the web, a quality setting of 75-85% typically provides an excellent visual result at 50-70% smaller file size compared to the original. For product photos or images where fine detail matters, use 85-90%.
Does compressing an image reduce its dimensions?
Not necessarily. Compression reduces file size; resizing reduces dimensions. This tool compresses without resizing by default. Use the Image Resizer tool to change dimensions.
What image formats support compression?
JPEG (lossy, best for photos), PNG (lossless, best for graphics and transparency), and WebP (both lossy and lossless, consistently smaller than JPEG and PNG). This tool supports JPEG and WebP output.