Compress & Optimize Images Online – No Uploads Needed

Free tool to compress, resize and convert images fully in your browser. Supports WebP, AVIF, JPEG, PNG, GIF, BMP & TIFF.

✓ 100% private✓ High quality✓ No signup✓ Completely free

Drag your images here or click to browse

Why choose FotoLince?

🔒

Private

Images never leave your device

⚡

Fast

Instant WebAssembly processing

🖼️

Quality

Advanced compression preserves detail

🆓

Free

No usage or file limits

What users say

"Reduced my shop load time by 40% with no visual downgrade. Love that everything is local."

Ana, Web Designer

"Finally a converter/compressor that respects privacy. Results are on par with desktop tools."

Mark, Photographer

"Switching to WebP/AVIF with FotoLince lifted my Core Web Vitals scores immediately."

Laura, Ecommerce Manager

FAQ

How does FotoLince work without uploading my images to servers?+
FotoLince uses WebAssembly technology to process all images directly in your browser. No files are uploaded to our servers, ensuring total privacy and fast processing.
Can I really optimize images without losing quality and maintaining privacy?+
Yes. Optimization (compression, conversion, and resizing) happens 100% locally in your browser using WebAssembly. We control compression levels to preserve sharpness and color, achieving reductions of up to 80% with no perceptible loss while your files never leave your device.
What image formats can I compress with FotoLince?+
FotoLince supports multiple formats like JPEG, PNG, WebP, AVIF, GIF, BMP, and TIFF. You can compress any of these formats and also convert between them to further optimize your images.
Is there a limit on the size or number of images I can process?+
There are no limits imposed by us. The only limits are your own device's resources.
Does FotoLince work on mobile devices?+
Yes, FotoLince is optimized for both computers and mobile devices. The interface adapts to any screen size.

Learn image optimization

Visit the blog for performance techniques, ecommerce tips and format guidance. Full library in Spanish – English versions in progress.

View blog articles →
🇺🇸

Optimized for United States

Ecommerce in United States

Compress and optimize product images for Amazon, Etsy, eBay, Walmart and platforms like Shopify & WooCommerce.

Success story:"Cut homepage weight by 42% and improved LCP by 380ms using FotoLince batch compression."

Real estate

Improve listings on Zillow & Redfin with lighter images that still look sharp.

Optimization tip:AVIF & WebP assets often deliver 25–45% byte savings over legacy JPEG/PNG when tuned at visually lossless settings.

Processing is 100% local & free. No server uploads: images never leave your device. Fast, secure & private. 🇪🇺 Complies with GDPR. Supported by unobtrusive ads only.