Image Compressor
Compress images to reduce file size with adjustable quality. See original vs compressed size instantly. Free, private, 100% browser-based.
Drop an image here or click to browse
Supports JPG, PNG, GIF, WebP, BMP
About this tool
Large image files slow down websites, fill up storage, and take forever to send by email. This Image Compressor reduces file size by re-encoding your image as JPEG at a lower quality setting. The quality slider lets you find the perfect balance between size and visual quality.
Everything runs in your browser using the Canvas API. Your images are never uploaded to any server. The tool shows you a real-time comparison of original vs compressed file size so you can see exactly how much space you are saving.
tuneCompression Settings
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For web use, 60-80% quality is usually ideal. Below 40%, artifacts become noticeable. The output is always JPEG format for maximum compression.
Frequently Asked Questions
How does image compression work?
The tool re-encodes your image as JPEG at a lower quality setting using the browser's Canvas API. Lower quality means smaller file size but some visual detail is lost. The preview lets you find the right balance.
What is the maximum file size I can compress?
There is no hard limit since everything runs in your browser. However, very large images (50MB+) may be slow depending on your device's memory and processing power.
Will my image be uploaded anywhere?
No. The entire compression process happens locally in your browser. Your images are never sent to any server, ensuring complete privacy.