Free Image Compressor
Reduce image file sizes by up to 90% without visible quality loss. Drag and drop your images, adjust the quality slider, and download optimized files instantly. Supports JPEG, PNG, and WebP. Batch compress up to 20 images at once and download as a ZIP. Your images never leave your browser — 100% private, 100% free.
Drop images here or click to browse
JPG, PNG, WebP — up to 20 images at a time
Frequently Asked Questions
Are my images uploaded to a server?+
No. All compression happens inside your browser using JavaScript. Your images never leave your device. This is the safest way to compress sensitive or private images.
What image formats are supported?+
JPEG/JPG, PNG, and WebP. You can drag and drop any mix of these formats and compress them all at once.
Is there a file size limit?+
No artificial limits. Your browser handles the processing, so the only constraint is your device memory. Most modern devices handle images up to 50MB with ease.
How much can I reduce the file size?+
Typically 60-90% for JPEG images and 40-70% for PNG images, depending on the quality setting you choose. The quality slider lets you find the perfect balance.
Can I compress multiple images at once?+
Yes. Drop up to 20 images at a time, compress them all, then download individually or as a single ZIP file.
Is this really free with no limits?+
Yes. No signup, no watermarks, no daily limits, no premium tier hiding the good features. Everything you see is free.
You might also like
How to Compress Images Without Losing Quality
Large image files slow down websites, inflate email attachments, and eat up storage. A 4MB photo straight from your camera can often be reduced to under 400KB with no visible quality difference — that is a 90% reduction that makes pages load 10× faster. Image compression is one of the highest-impact optimizations for web performance and Google Core Web Vitals rankings. Our tool runs entirely in your browser, so your images never leave your device.
JPEG vs PNG Compression
JPEG is a lossy format — some data is permanently discarded during compression, but the human eye rarely notices at quality settings above 70%. This makes JPEG ideal for photos and complex images where file size matters most. PNG is lossless by design, so compression removes metadata and optimizes encoding without discarding pixel data. PNG works best for screenshots, illustrations, logos with transparency, and images with text. WebP is a modern format that offers excellent compression for both photo and graphic content.
Why Browser-Based Compression is Safer
Traditional online compressors upload your images to a remote server for processing — which means your personal photos, confidential screenshots, or proprietary product images pass through a third-party system. Our compressor uses the browser's built-in Canvas API and Web Workers to process everything locally on your device. No upload, no server, no data retention. What you compress stays on your machine.
Tips for Optimal Image Compression
Start with the quality slider at 80% — this is the sweet spot for most images where compression is significant but quality loss is imperceptible. For images that are purely decorative (backgrounds, textures), you can go as low as 60% without issue. For images containing text or fine detail (product shots, medical images), stay at 85% or higher. When batch compressing, compress first and then review the individual images — one click on any card opens the before/after comparison so you can spot any quality concerns before downloading.