Image Compress
Compress JPG, PNG, WebP, AVIF images. Lossless or lossy, batch processing. All processing is done locally in your browser.
Drag & Drop Images Here
or click to browse. Supports JPG, PNG, WebP, AVIF, GIF, BMP, TIFF
Frequently Asked Questions
How It Works
This tool runs entirely in your browser — no uploads to any server. Simply add your images and click compress. The tool automatically analyzes each file and selects the optimal compression settings. Once processing is complete, you can save your results immediately or use the quality slider to fine-tune output. Every image can be individually adjusted and downloaded.
Compression Guide by Format
JPEG Compression
For JPEG files, the tool detects the original quality level from the file's quantization tables. The default target quality of 80 provides an excellent balance between file size and visual quality for most images. Use the slider to adjust — higher values preserve more detail but produce larger files, while lower values create smaller files with more visible compression artifacts. For even smaller files, consider converting to WebP or AVIF.
PNG Optimization
PNG images are converted to indexed PNG8 format with up to 256 colors. This format is ideal for web graphics, icons, logos, screenshots, and illustrations with limited color palettes. Transparency is fully preserved. The color slider lets you further reduce the palette for additional compression. If your PNG is a photograph or contains smooth multi-color gradients, PNG8 may not be suitable — in that case, consider converting to JPG or WebP for better results.
WebP Compression
WebP images are compressed using lossy compression similar to JPEG. WebP typically produces files 25-35% smaller than JPEG at equivalent visual quality. The quality slider works the same way as JPEG — adjust to find the right balance for your needs.
GIF Optimization
Animated GIFs are optimized by analyzing and reducing the color palette while preserving animation frames. The color slider controls the maximum palette size between 2 and 256 colors. Reducing colors can dramatically decrease file size, especially for animations with simple graphics. For better compression, consider converting GIFs to animated WebP.
Privacy & Security
All image processing is performed entirely within your browser using WebAssembly technology. There are no uploads to any server, no data collection, and no privacy concerns. All metadata — including EXIF data, GPS coordinates, and camera information — is automatically removed from compressed images.
Free & Unlimited
No registration required. No daily limits. No watermarks. Compress as many images as you want, completely free. This tool is designed for both casual users and professionals who need reliable, high-quality compression.