Image Compressor

What is Image Compressor?

An image compressor reduces file size by re-encoding images with lower quality or a different format. Smaller photos load faster on websites, use less storage, and send quicker via email or messaging. This tool runs entirely in your browser—your images are never uploaded to any server. That makes it ideal for sensitive photos, personal documents, or any workflow where privacy matters.

You get a side‑by‑side before/after preview with file size comparison, so you can see exactly how much you saved and whether the quality is acceptable. Output formats include JPEG and WebP (lossy, smaller files) and PNG (lossless, larger files). Advanced options let you cap dimensions and apply a sharpening pass for screenshots or text-heavy images.

How to Use Image Compressor

1. Click the dropzone or drag and drop an image onto it. Supported formats include JPEG, PNG, WebP, and GIF (up to 50 MB).
2. Select the output format: JPEG for photos (best balance of size and quality), WebP for modern browsers (often smaller than JPEG), or PNG for graphics with transparency.
3. Adjust the quality slider (10–100%). Higher values keep more detail; lower values shrink file size. Start around 80% and tweak as needed.
4. Click Compress or press Ctrl+Enter. The before/after preview and compression stats appear.
5. Review the saved percentage and file sizes. Click Download to save the compressed image. Open Advanced to set max width/height or enable sharpen.

Tips & Best Practices

For photos, JPEG at 75–85% usually gives a good balance. WebP often produces smaller files at similar quality. PNG is lossless—if you compress a PNG to PNG, the output may be larger than the original; use JPEG or WebP for real size reduction. Enable Sharpen in Advanced for screenshots or images with text to improve clarity after resizing. Use max dimensions when you need thumbnails or fixed‑width images. Press Esc to clear.

When to Use This Tool

Use this image compressor when you need to shrink photos for web, email, or social media without sending them to a server. It's ideal for privacy‑conscious users, developers, and designers who want to optimize assets locally. Choose it over cloud compressors when handling confidential images or when you prefer a tool that works offline. For changing dimensions without changing quality, pair it with our Image Resizer.