Image Compressor

Image compression reduces file size by discarding or encoding image data more efficiently. Lossy compression (used for JPEG and lossy WebP) removes some image detail that is less visible to the human eye, achieving significant size reductions. Lossless compression (used for PNG) reorganises data without removing any, resulting in smaller but usually larger files than lossy formats for photographs.

For JPEG, a quality setting of 75 85 is generally considered a good balance for web images noticeable compression artefacts are rare at this level, and file sizes are meaningfully smaller than at 100. For WebP, 80 85 is comparable. For PNG, quality affects compression level rather than pixel data, so it rarely changes visual quality.

Image Compressor lets you control output quality and format to reduce file size. The result size depends on the quality setting you choose. Image Size Reducer works differently you specify a target file size in KB (such as 50KB or 100KB), and the tool automatically finds the compression level needed to hit that target. Use Image Compressor when you want quality control; use Image Size Reducer when you need to meet a specific file size limit.

No. Image compression changes the file size without altering the image dimensions (width and height in pixels). A 4000×3000 pixel image compressed from 8MB to 1MB remains 4000×3000 pixels. If you need to change dimensions, use the Image Resizer.

Yes. You can upload multiple images at once. Each file is compressed individually using your chosen settings.

You can upload JPEG, PNG, WebP, BMP, and GIF files. The output format depends on your selection JPEG, PNG, or WebP.

For lossy formats like JPEG, yes each re compression cycle applies additional lossy encoding, gradually degrading quality. This is known as generation loss. Always compress from the original source file, not from a previously compressed version.

The tool supports images up to 20MB. Most web and phone camera images fall well within this limit.

Yes. All compression processing runs locally inside your browser using the display screen API. Your images are never transmitted to any server.

Images compressed for the web are typically at 72 96 DPI screen resolution, which is not suitable for high quality printing. For print, keep your original high resolution source files. Compressed web images can be used for digital display in printed documents but may appear soft when printed at large sizes.