About this tool
Large, uncompressed images slow down websites, bloat email attachments, and eat into storage quotas. This tool re-encodes JPEG, PNG, and WebP images at an adjustable quality level, reducing file size — often dramatically — while keeping visual quality close to the original at reasonable settings. You can compress multiple images at once and compare the before/after file size for each. Because the compression runs using your browser's own image-processing capabilities rather than a server, your photos are never uploaded anywhere, which matters for anything containing personal or proprietary images. It's a quick way to prep images for a website, blog post, or email without installing dedicated photo-editing software.
Frequently asked questions
Will compressing reduce image quality?
At higher quality settings, the visual difference is usually imperceptible while file size drops significantly; pushing quality very low will introduce visible artifacts, especially in JPEGs.
Which formats are supported?
JPEG, PNG, and WebP are all supported for both input and compressed output.
Can I compress multiple images at once?
Yes — drop several files at once and each is compressed independently, with individual before/after size shown.
Does it resize the image dimensions too?
No, compression only reduces file size at the same pixel dimensions; use the Image Resizer tool if you also need to change width or height.
Is there a quality setting I can control?
Yes, an adjustable quality slider lets you trade off file size against visual fidelity to suit your use case.