How much can JPEG compress an image without significant loss of quality?

JPEG can typically be compressed by around 70–80% of its original file size without noticeable loss of visual quality, depending on the image content. The key is finding the right balance between compression level and clarity — too much compression can introduce artifacts or blurriness.

For controlled compression, tools like Quick Image Tools let you adjust the quality slider manually, so you can reduce file size while keeping the image sharp and detailed. This is ideal for web uploads, social media, and faster page loading.