JPG, PNG, or WebP · max 20 MB
How to use Image Compressor
Re-encode an image at an adjustable quality setting and compare the downloaded size with the original.
- Choose a supported image using the file picker.
- Adjust the quality setting and run compression.
- Compare file sizes and inspect the result before discarding your source.
Worked example
For a website photograph, first resize to its intended display dimensions, then reduce quality gradually until the size and appearance are acceptable.
Limits and things to check
Compression is lossy where the output encoder uses a quality setting. Lower quality does not guarantee a smaller result than an already optimized source. Canvas export may change metadata and image appearance.
Can I guarantee a file below a specific KB limit?
No. The result depends on dimensions, image detail, and encoding. Reduce dimensions as well as quality when a fixed upload limit is important.
Processing and privacy
Your browser performs the operation locally. Inputs and results are not sent to OneClickWorks.
Common questions
Does this tool upload my input?
No. Processing happens in this browser tab and your input is not sent to OneClickWorks.
What happens when I leave the page?
In-memory input and generated download links are released when the page is reset, replaced, or closed. OneClickWorks does not persist tool content.