Image Compressor — Reduce File Size
Compress images up to 90% smaller with adjustable quality. See before/after file size instantly. 100% browser-side, private and free.
Upload your image
Drag & drop or click to browse — PNG, JPG, WebP supported
Processed in your browser — nothing uploaded
Frequently Asked Questions
Is this image compressor free?
Yes, 100% free. No signup, no watermark, no limits. Compress any image instantly in your browser.
How much can I reduce file size?
Typically 50-90% reduction depending on the original image and quality setting. WebP format gives the best compression.
Does compression affect quality?
You control the quality slider (1-100). Higher values preserve more quality with less compression. 75% is a good balance for most images.
What output formats are available?
JPEG and WebP. WebP provides better compression at the same quality level and is supported by all modern browsers.
Is my image uploaded to a server?
No. All compression happens in your browser using the Canvas API. Your images never leave your device.
Free Online Image Compressor — Reduce File Size Up to 90%
PNGraft's free image compressor reduces your image file size by up to 90% with adjustable quality control. Choose between JPEG and WebP output formats, set your preferred quality level with the slider, and see exact before/after file sizes instantly. Perfect for optimizing images for websites, emails, social media, and faster page loading. All processing happens in your browser using the Canvas API — your images are never uploaded to any server. No signup, no watermark, completely free for personal and commercial use. Supports PNG, JPG, and WebP input. Ideal for web developers, bloggers, content creators, and anyone who needs smaller image files without sacrificing visual quality.