Upload your JPG, PNG or WebP and we optimize it in seconds — right inside your browser. Your image never leaves your device.
Drop your images here
or click to select files
JPG · PNG · WebP · GIF · up to 50 MB per file
The tool used daily by designers, bloggers and developers worldwide
Your image is never uploaded to any server. All processing happens inside your browser.
Compressed in under 2 seconds. No waiting, no queues, no daily file limit.
Smart algorithm that reduces file weight to the maximum without the human eye noticing any difference.
Compress 20, 50 or 100 images at once. Download all with a single click.
WebP is 30% lighter than JPG. Instantly improve your website's Core Web Vitals score.
Responsive design. Compress photos from your iPhone, Android or tablet — nothing to install.
Drag or select one or multiple files. JPG, PNG, WebP and GIF supported.
Choose between maximum compression or maximum fidelity. 80 is the sweet spot for most images.
Download compressed images individually or all at once.
Lighter images = faster pages = better SEO ranking.
Optimized product photos that load 3× faster without losing sharpness.
Reduce image weight so your newsletters don't end up in spam.
Optimize assets before deploying to production. API access available on Pro plan.
Upload high-quality photos without Instagram or WhatsApp degrading them.
Lighter PDFs and PowerPoints that open and share instantly.
"I reduced my product images from 2 MB to 180 KB with no visible difference. My store loads twice as fast now."
"I use ComprimirPro every week for my blog. It's the fastest tool I've tried, and knowing my images never leave the browser gives me peace of mind."
"Finally a tool that does exactly what it promises. No sign-up, no spam, no surprises. I recommend it to my whole team."
Yes, completely free with no limits. No registration required, no daily file cap, and we will never ask for your credit card. We are funded through non-intrusive advertising.
No. All compression happens inside your browser using the JavaScript Canvas API. Your image never leaves your device. We store no files and no personal data.
We recommend 70–85% for web use. This range delivers the best quality-to-size ratio. For high-end product images use 85–90%. For thumbnails and backgrounds, 60–70% is sufficient.
WebP is Google's modern image format. It delivers 25–34% smaller files than JPG and 26% smaller than PNG at equivalent quality. It is supported by Chrome, Firefox, Edge and Safari (since 2020). Using it directly improves your Core Web Vitals and SEO.
There is no official limit, but we recommend batches of 20–30 images for best browser performance. For very large batches (100+ images), consider our Pro plan with optimized processing.
Yes. ComprimirPro works in any modern browser: Chrome, Firefox, Safari and Edge, on both desktop and mobile iOS/Android devices.
We currently support JPG, PNG, WebP and GIF. RAW formats (CR2, NEF, ARW) are not compatible with the browser Canvas API. For these, we recommend converting to JPG or PNG first.
Images account for 60–70% of the total weight of a web page. A 3 MB unoptimized image can become 300 KB with no perceptible quality loss — a 90% saving that has a direct impact on:
ComprimirPro uses the HTML5 Canvas API algorithm with smart configuration to achieve the maximum possible compression while maintaining optimal visual quality. Converting to WebP format gives you an additional 25–35% saving over traditional JPG.