Image Compressor
Image Compressor - a browser-based image tools utility.
Browser tool
About Image Compressor
Making a photograph smaller so it can be uploaded, emailed or served on a page that has to load quickly. The compression happens on your device, and the quality trade-off is shown before you commit rather than discovered afterwards. Compression is free and runs online in your browser, so the photo gets smaller without uploading it anywhere. No watermark is added, and it works without a sign up or an account.
How to use it
- Open the imageJPG, PNG and WebP are all accepted, and none of them travels anywhere.
- Choose a preset or a quality levelThe resulting size is reported so the trade can be judged against the limit you are trying to meet.
- Resize as well, if the pixels are excessiveA 6000-pixel photograph displayed at 800 is wasting most of its weight; resizing saves far more than quality alone.
- Download and compareCheck the result at the size it will actually be seen before replacing the original.
Resize first, compress second
Quality settings throw away detail within the pixels you have; resizing reduces how many pixels there are. For a photograph destined for a web page at 800 pixels wide, scaling it down does more for the file size than any quality slider, and it does so without introducing artefacts. Compress after resizing, not instead of it.
What it does not do
- Lossy compression is permanent. Re-compressing an already-compressed image degrades it further, so always work from the original.
- PNG with transparency compresses differently from a photograph, and forcing a photograph into PNG produces a very large file for no benefit.
- Very large images are bounded by browser memory rather than by an upload limit.
Questions people ask
- What quality setting should I use?
- For photographs on the web, somewhere around 75-85 is usually indistinguishable from the original at normal viewing size while being dramatically smaller. Below about 60 the artefacts become visible in flat areas like skies.
- Why is my PNG barely getting smaller?
- PNG is lossless, so there is a floor. If the image is a photograph, converting it to JPG or WebP will shrink it enormously; keep PNG for graphics with flat colour, sharp edges or transparency.
Questions about ToolsVerse itself — privacy, cost, what happens to your files — are answered in the frequently asked questions.
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