Tool
Image Compressor
Drag in a JPG, PNG, or WebP. Pick a quality level. Download a smaller file. Nothing leaves your browser.
Drop a JPG, PNG, or WebP here, or click to browse
Compress your image in three steps
No software to install. Works in any browser, on any device.
Upload your image
Drop or click to add a JPG, PNG, or WebP image.
Choose compression level
Set the quality slider to balance file size vs. sharpness.
Download the compressed file
Compare before/after sizes, then download your smaller image.
Compression
Adjustable quality
Slide to set compression level. See estimated output size before downloading.
JPG, PNG, WebP
Supports all three major web image formats.
100% private
Compression runs locally in your browser. Image never sent to a server.
About the Image Compressor
JPEG compression works by discarding image data the human eye is least likely to notice — fine detail in areas of gradual colour change. At 75% quality, most photos are visually indistinguishable from the original while being 60–80% smaller. At 50%, the file is tiny but compression artefacts (blurring, blockiness around edges) become visible.
This tool always outputs JPEG, which is the most compressed format for photos. If your input is a PNG or WebP, it gets converted to JPEG — transparent areas are filled white. For photos and screenshots this is usually exactly what you want. For graphics with transparency that you need to keep, use a PNG-specific compressor instead.
Everything runs in your browser using the HTML5 Canvas API. Your images are never sent to a server — they stay on your device throughout.
The Balanced preset (75%) is a good starting point for most images. Use Small (50%) when file size is the only priority — sending via WhatsApp or attaching to a form with a tight size limit. Use Quality (90%) when appearance matters and you just need to trim a few hundred KB.
Need more image tools? Resize Image, JPG to PNG, and PNG to JPG are all free and run entirely in your browser.
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Frequently Asked Questions
How much can I compress without visible quality loss?
For JPG, quality 75-85% reduces size 50-70% with no visible degradation. Below 60% you'll see artifacts. 80% quality is a safe default for web use.
Should I compress JPG or convert to WebP?
WebP achieves 25-35% smaller files at the same quality. If your target supports WebP, converting is often better than just compressing.
Does compressing PNG make it smaller than converting to JPG?
Not usually for photos. JPG (or WebP) will almost always be smaller for photographic content.
Can I compress an already-compressed image?
Yes, but with diminishing returns. Re-compressing a JPG at 80% won't get much smaller without noticeable loss.