Image Compressor
Upload an image, choose output format and quality, preview the result, and download a smaller file. Useful for website optimization, email attachments, and faster uploads.
Image Compressor tool
Current quality: 0.80
PNG ignores quality in most browsers. JPEG and WebP usually provide stronger compression.
Lower quality usually means a smaller file, but visible compression artifacts may appear. This tool keeps the original image dimensions and only changes file encoding.
Privacy: image compression runs locally in your browser. No image is uploaded, stored, or transmitted.
Learn more about images
Understanding formats and optimization helps you get better results when converting or editing images.
This tool draws your image to a browser canvas and then exports it again using the selected format and quality setting. Compression reduces file size by lowering image data complexity, especially in JPEG and WebP exports.
- JPEG: usually best for photos when you want strong file size reduction
- WebP: often provides good compression with better visual quality than JPEG in many cases
- PNG: useful for graphics and transparency, but file size may not shrink much
- Result interpretation: a higher reduction percentage means a smaller file, but very aggressive compression can soften detail or introduce artifacts
Examples
- Website upload: compress a product photo before uploading it to improve page load speed
- Email attachment: reduce a large screenshot or photo so it is easier to send
- Portfolio image: export a visual asset at lower quality to keep file size manageable
- General use: compare JPEG and WebP to find a better balance between quality and size
FAQ
- How does image compression work?
This tool re-encodes your image in the browser using the selected output format and quality level. Lower quality usually creates a smaller file.
- Is the image uploaded?
No. The selected image is processed locally in your browser and is not uploaded or stored by this tool.
- Which formats are supported?
You can upload common image formats supported by your browser and export compressed results as JPEG, PNG, or WebP.
- Will compression always reduce file size?
Not always. PNG may stay the same size or even become larger depending on the image. JPEG and WebP usually provide stronger size reduction for photos.
- What quality value should I use?
A quality around 0.7 to 0.85 is a practical starting point for many photos. Lower values reduce file size more but may introduce visible artifacts.
- Does compression change image dimensions?
No. This tool compresses the file without changing the pixel width and height of the image.