FreeToolsWorld

Image Compressor

Shrink and resize images without uploading them anywhere.

Image Tools Free, no sign-up Runs in your browser

Your image is processed inside this page. It is never uploaded to a server.

About the Image Compressor

Image Compressor reduces the file size of a photo by re-encoding it at a lower quality setting and, if you want, at smaller dimensions. Both levers matter: quality controls how much detail the encoder discards, while resizing removes pixels outright and usually saves far more. A photo straight from a phone camera is often four times wider than it will ever be displayed, so resizing alone can cut the file by ninety percent before quality is touched.

Everything happens inside your browser. The image is read into a canvas element, resized and re-encoded locally, and the result is handed back to you as a download. It is never uploaded, which means holiday photos, screenshots containing private information and client work can all be compressed here safely.

You see the original and the compressed version side by side with both file sizes and the percentage saved, so you can judge whether the saving is worth the loss in detail before downloading. Output can be JPEG, WebP or PNG. WebP usually produces the smallest file at a given visual quality and is supported by every current browser.

How to use the Image Compressor

  1. Choose an imageSelect a file or drag it onto the drop area. JPEG, PNG and WebP are supported.
  2. Set the qualityDrag the quality slider. Around 0.75 is a good balance for photographs.
  3. Resize if it helpsEnter a maximum width or height. Aspect ratio is kept automatically.
  4. Compare and downloadCheck the preview and the size saved, then download the compressed image.

Features

  • Runs entirely in your browser with no upload
  • JPEG, WebP and PNG output
  • Quality slider with live preview
  • Resize by maximum width or height with aspect ratio preserved
  • Original and compressed sizes with percentage saved
  • Side-by-side comparison before you download
  • Drag and drop file selection

Who uses this tool

The image compressor is used by writers, developers, students, marketers and anyone else who needs the job done once without installing software. Common cases include:

  • Shrinking photos so a web page loads faster
  • Getting an image under an upload size limit
  • Resizing screenshots before attaching them to a ticket
  • Preparing product images for an online store
  • Compressing images that are too sensitive to upload to a third-party service

Frequently asked questions

Are my images uploaded to your servers?

No. The file is read by your browser, processed on a canvas element and written back out locally. It never crosses the network, which is why the tool works even with the connection switched off after the page loads.

What quality setting should I use?

For photographs, 0.7 to 0.8 usually looks indistinguishable from the original at a fraction of the size. Graphics with flat colour and sharp edges, such as screenshots and logos, need a higher setting or a PNG output to avoid visible artefacts.

Why did my PNG get larger instead of smaller?

PNG uses lossless compression, so re-encoding it rarely helps and can add bytes. For screenshots and photographs, choose JPEG or WebP output instead. PNG only makes sense when you need transparency or perfectly sharp flat colour.

Does compression remove EXIF data?

Yes. Re-encoding through a canvas drops the metadata, including camera details and GPS location. That is usually a privacy benefit, but it also means orientation and copyright fields are lost.

Should I choose WebP or JPEG?

WebP generally produces a smaller file for the same visual quality and is supported everywhere that matters now. Choose JPEG when the file will be opened by older software or sent to someone who needs maximum compatibility.

Is there a file size limit?

The practical limit is your device's memory, since the whole image is held in the tab while it is processed. Very large images from professional cameras may be slow on an older phone.

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