Your files are never uploaded. All compression is done on your device.
Drag and drop images here, or click to select
Have you ever tried to email a photo, but it was too large? Or noticed a website that took forever to load its pictures? Large image files are often the culprit. By using a free image compressor, you can significantly reduce photo size without any noticeable change in quality. This makes your images easier to share, send, and display on websites.
Image compression is both an art and a science. Understanding the different compression algorithms, when to use lossy vs lossless compression, and how to balance quality with file size is crucial for web developers, photographers, and anyone working with digital images. Our comprehensive guide covers everything from basic concepts to advanced optimization techniques.
Choosing the right image format can reduce file sizes by 50-80% while maintaining visual quality. JPEG excels at photographs with gradients, PNG is perfect for graphics with sharp edges, WebP offers superior compression for web use, and AVIF provides the best quality-to-size ratio for modern browsers. Understanding these differences is essential for optimal web performance.
Images account for 60-65% of the average webpage's total size. Unoptimized images are the #1 cause of slow loading websites, directly impacting user experience, bounce rates, and search engine rankings. Google's Core Web Vitals specifically measure loading performance, making image optimization a critical SEO factor. Our tool helps you achieve Google PageSpeed scores of 90+ by properly compressing your images.
Unlike TinyPNG, Optimizilla, and other tools that require you to upload your files, this secure image compressor works entirely on your device. When you select an image, all the resizing and compression happens locally in your browser. Your files are never uploaded to a server, ensuring your data remains completely private. This makes it a safe and secure TinyPNG alternative and better than TinyPNG for privacy-conscious users.
We use the power of modern web technologies like WebAssembly (WASM) and Web Workers to run high-performance compression algorithms directly in your browser. This makes our tool as powerful as a desktop application but as convenient as a website, all while maintaining your privacy.
Complete guide to image optimization for faster websites
Learn how to optimize images for Core Web Vitals, reduce bounce rates, and improve SEO rankings through proper compression techniques.
JPEG vs PNG vs WebP vs AVIF - When to use each format
Comprehensive comparison of image formats with real-world examples, browser support tables, and decision trees for optimal format selection.
Find the perfect balance between quality and file size
Advanced techniques for choosing optimal quality settings, understanding SSIM metrics, and achieving maximum compression without visible quality loss.
Under the hood: How our compression engine works
Deep dive into WebAssembly encoders, compression algorithms, and the technical implementation that makes browser-based compression possible.
Times measured on modern desktop browsers with hardware acceleration
Our auto-quality feature targets SSIM > 0.98 for optimal results
Yes, absolutely. This tool is 100% private because your images are never uploaded to our servers. All compression happens directly in your browser on your own computer. Your files never leave your device. This is particularly important for sensitive business documents, personal photos, or confidential materials where privacy is paramount.
Yes, absolutely! We provide a similar high-quality compression experience but with a key difference: privacy. By processing images in your browser, we offer a more secure alternative for users who are concerned about uploading their files to a server. Unlike TinyPNG, Optimizilla, and other online compressors, your files never leave your device. Plus, we support more formats including next-gen AVIF and WebP.
Our tool offers the same high-quality compression as TinyPNG and Optimizilla, but with superior privacy protection and more advanced features. While other tools upload your images to their servers, we process everything locally using WebAssembly-powered encoders. This means faster processing, no upload time, unlimited usage, and complete privacy. We also support AVIF format, which can achieve 50% smaller file sizes than JPEG.
Yes, it is completely free to use with no limits on file size, number of images, or usage frequency. We believe everyone should have access to high-quality image compression without needing to pay, sign up, or provide personal information. There are no hidden costs, premium tiers, or restrictions.
Lossy compression reduces file size by permanently removing some data, which can slightly reduce quality but offers significant size savings (e.g., JPEG, WebP at 70-90% quality). Lossless compression reduces size by removing redundant data without any quality loss, but savings are smaller (e.g., PNG, WebP at 100% quality). For photographs and complex images, lossy compression at 80-85% quality typically provides the best balance, often reducing file sizes by 60-80% with minimal visible quality loss.
No, they are different optimization techniques that work together. Resizing changes the image's dimensions (pixels, e.g., from 4000px to 1200px wide), while compressing reduces the file size (bytes, e.g., from 2MB to 200KB) at its current dimensions. The most effective approach is: 1) Resize to your target display size, 2) Then compress for optimal quality vs file size. A 4000px image compressed to 500KB is still larger and slower than a properly sized 1200px image at 150KB.
Image optimization directly impacts page load speed, user experience, and SEO rankings. Images account for 60-65% of the average webpage's total size. Unoptimized images can slow your site from 2 seconds to 8+ seconds load time, increasing bounce rates by 90%. Google's Core Web Vitals (LCP, CLS, FID) heavily weight image performance in search rankings. Properly optimized images can improve your PageSpeed score from 40-50 to 90+, significantly boosting your SEO performance and user engagement.
Choose based on content and browser support: JPEG for photos and complex images with gradients (best compatibility, 60-80% compression). PNG for graphics with sharp lines, text, or transparency needs (lossless, larger files). WebP for modern web use (30-50% smaller than JPEG, 95% browser support). AVIF for cutting-edge optimization (50-70% smaller than JPEG, growing browser support). Our tool automatically selects the best format, but you can override based on your specific needs.