Image Compressor
Compress, resize, and convert images instantly. Hit exact file-size limits and optimize modern formats—all without uploading your images to a server.
Optimization workspace
Make every image lighter
Add one image or a whole batch. Start with Balanced, preview the result, then download only when it looks right.
Drag, drop, or paste
Choose images to optimize
Select one image or process a batch. Your originals are never overwritten.
JPG, PNG, WebP, AVIF, GIF, APNG and BMP · 50 MB per image
Why is this image large?
Add an image to get a clear, local diagnosis.
Web transfer estimate
Compress an image to see its potential transfer savings.
Why does image size matter?
Images frequently account for the largest proportion of downloaded bytes on a webpage. Large, unoptimized images cause pages to load slowly, frustrating users and negatively impacting your Core Web Vitals metrics. Optimizing images can drastically reduce bandwidth usage, improve load times, and save storage space.
How does local compression work?
Unlike many online tools that upload your files to a remote server, our compressor processes your images entirely within your web browser using your device's own CPU. This means your private photos and sensitive assets never leave your computer, guaranteeing complete privacy and zero upload/download waiting times.
Balancing Quality and Compression
Image compression involves finding the perfect balance between reducing file size (saving bytes) and preserving visual fidelity. You can choose aggressive compression to minimize storage, or subtle compression to maintain pristine quality. Our tool also allows you to specify an exact target file size (e.g., exactly 200KB), which is perfect for meeting strict upload constraints on platforms or content management systems.
Understanding Image Formats
Choosing the right output format is crucial. JPEG is ideal for photographs. PNG is best when you need crisp text, flat colors, or transparent backgrounds. Modern formats like WebP and AVIF provide superior compression compared to older formats, often reducing file sizes by 30% or more without any noticeable loss in quality.
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