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Image Compressor

Shrink JPG, PNG and WebP file size right in your browser

Privacy: your files never leave your device. All processing happens locally in your browser.

How to use

  1. 1.Pick an image or drop it anywhere on the page — compression starts instantly.
  2. 2.Drag the quality slider and compare the original and compressed image with the split view.
  3. 3.Download the compressed file. It never left your device.

About Image Compressor

An image compressor reduces the file size of a picture while keeping it looking sharp on screen. This one runs entirely in your browser: the moment you pick or drop a JPG, PNG or WebP file, it is compressed locally on your device. Nothing is uploaded to any server, which means no waiting in a queue, no file-size caps imposed by a host, and no copy of your photo sitting on someone else's machine.

Oversized images are the single heaviest part of most web pages, emails and chat messages. A photo straight from a phone camera typically weighs 3 to 8 MB; after compression at around 70% quality it usually lands between 200 KB and 1 MB with no visible difference at normal viewing size. Smaller files upload faster, load faster, fit through email attachment limits, and pass the upload caps on job portals, marketplaces, forums and government forms.

Under the hood, the tool decodes your image, redraws it onto an HTML5 canvas, and re-encodes it with the format and quality you choose. JPEG is the safe default for photographs: every device and app on earth can open it. WebP typically produces files 20 to 30 percent smaller than JPEG at the same visual quality and is supported by all modern browsers, so it is the better pick for images that will live on a website.

The quality slider is the heart of the tool. The output updates in real time as you drag, and the before-and-after view shows the original and the compressed image stacked in one frame — pull the divider line across the picture to inspect exactly what compression does to fine detail like hair, text and sky gradients. For most photos, anything between 60% and 80% quality is indistinguishable from the original. Screenshots with small text tend to survive better in WebP than in heavily compressed JPEG.

Compressing images before publishing them on a website also pays off in search rankings. Page speed is a confirmed ranking signal, and image weight is usually the first thing slowing a page down. Running your hero images and product photos through a compressor is one of the fastest Core Web Vitals wins available: smaller images directly improve Largest Contentful Paint, and they cut bandwidth costs for you and your visitors at the same time.

Because everything happens on your device, this compressor is also a private one. Sensitive material — ID scans, contracts, medical images, unreleased product shots — never travels over the network. It is free to use — no sign-up required — with no watermark on the output and no artificial limit on image dimensions beyond what your browser's memory can handle. Pick a file, watch the size drop, drag the divider to check the quality, and download the result. That is the whole workflow, and it takes seconds.

Frequently asked questions

Is this image compressor really free?
Yes. Compression runs locally in your browser, so there are no server costs to pass on. No watermark is added to your images.
Are my images uploaded to a server?
No. The whole process — decoding, compression and preview — happens on your own device using your browser's built-in image codecs. Your files never leave your computer.
What quality setting should I use?
For photos, 60–80% quality is visually indistinguishable from the original in most cases. Use the split view to check fine detail, and pick WebP for the smallest files on the modern web.

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