IMAGE COMPRESSION
JPEG Optimizer — Optimize JPEG Images for the Web
Optimize a JPEG online for free. Find a lower quality that keeps the photo looking good while cutting file size for faster pages. Runs in your browser.
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Drop a file here or click to choose
Shrink an image to a target file size
Optimizing a JPEG means finding the point where the file is as small as possible while still looking good. Most cameras and apps save JPEGs at a quality far higher than the web needs, so there's usually a lot of weight to cut before anyone would notice a difference. This tool re-encodes your JPEG at a quality you choose and shows the result, so you can settle on that sweet spot.
Why it matters for the web
Lighter images load faster, and load speed feeds directly into Core Web Vitals — the metrics search engines factor into ranking and users feel with every page. Well-optimized JPEGs are one of the easiest performance wins on most sites, because so many images ship at more quality than a screen can show. "Optimizing" and "compressing" are the same underlying operation; the difference is the mindset of finding the best size-to-appearance balance rather than simply making the file as tiny as possible.
Frequently asked questions
- How much smaller can a JPEG get?
- It depends on the original quality and how detailed the photo is. Images straight from a camera or phone often shrink dramatically with no visible change, because they were saved at more quality than the web needs.
- Does optimizing change the image dimensions?
- No. It only re-encodes the existing pixels at a smaller file size. To also cut the pixel width and height, resize the image as a separate step.
- Are my images uploaded?
- No. Optimization happens on a canvas in your browser, so everything stays on your device and nothing is sent to a server.