Free Image Compressor
Reduce image file size while keeping great quality. Adjust compression level and see results instantly.
Image compression reduces file size by adjusting JPEG quality, making images faster to upload, share and load. The live preview lets you compare original and compressed versions side by side before downloading. Nothing is uploaded to any server — the entire compression process runs in your browser. Useful for email attachments, web uploads and social media images.
Click to select or drag & drop your image here
JPG, PNG, WebP supported · No file size limitSelect image
Click or drag & drop your image. Your file never leaves your device.
Convert instantly
Your browser converts the image locally using the Canvas API — no upload needed.
Download result
Your converted image downloads immediately. Free, instant, no account.
The live preview shows both the original and compressed image side by side with file size information. Adjust the quality slider until you find the right balance between file size and visual quality for your use case. For web images, 75-85% quality typically provides a good balance. For photography archives, 90-95% quality preserves more detail.
How to use the quality slider
The quality percentage controls how much data JPEG compression discards. At 100% quality, almost no data is discarded — the file remains large. At 60-70% quality, significant data is discarded — the file is much smaller but artefacts may appear around edges and fine details. For most web images and email attachments, 75-85% quality provides the right balance. The live preview shows both versions simultaneously so you can compare before downloading.
What Is the Best Quality Setting for Web Images?
For web use, 75-85% quality is the sweet spot. At 80%, most images look virtually identical to the original while file size drops by 50-70%. This makes pages load faster and saves bandwidth. For print or professional use, stick to 90-95%.
PNG images are compressed losslessly — quality settings apply only to the output format. When compressing PNGs, the tool converts them to WebP or JPEG for maximum size reduction while maintaining visual quality.