ToolBrainy

Image Compressor

Shrink JPG, PNG and WebP images to a smaller file size, fast, free and processed privately in your browser.

Drop images here or click to browse JPG, PNG or WebP · multiple files supported · nothing is uploaded

About this tool

The Image Compressor reduces the file size of your JPG, PNG and WebP images by re-encoding them at the quality level you choose. Everything happens locally in your browser using the HTML canvas, your photos are never uploaded to a server, so they stay completely private. It is perfect for speeding up websites, shrinking email attachments and saving storage space without a noticeable drop in quality.

How to use

1
Add your images

Drag & drop or click to select one or more images.

2
Pick quality & format

Choose a quality level and output format, then compress.

3
Download

Save each compressed image, or download them all at once.

Why use it

Private by design

Images are compressed on your device, nothing is uploaded.

Fast batch compression

Compress many images at once and download them together.

Adjustable quality

Slide from light to strong compression and see the savings live.

No upload wait

Compression runs on your device, so there's no upload or queue — even large photos are ready in a moment.

Use cases

Faster websites

Lighter images load quicker and boost page speed.

Email attachments

Fit photos under size limits before you send.

Social uploads

Reduce upload time on slow connections.

Save storage

Keep more photos in the same disk or cloud space.

Convert to WebP

Switch JPG or PNG to modern, smaller WebP.

Marketplace listings

Meet image size rules on shops and forms.

Frequently asked questions

How do I compress an image to under 100 KB?

Upload your image, then drag the quality slider down while you watch the live size readout. Around 60% quality, most photos slip under 100 KB without looking obviously worse. Still too big? Switch the output to WebP for a smaller file, or resize the image first with our Image Resizer, then compress. Because the size updates as you go, you can stop the moment you hit your target.

How much smaller will my images get?

It depends on the original file and the quality you choose. Photos saved as JPG often shrink by 50–80% with little visible change, and PNGs with flat colour — or anything converted to WebP — can drop even more. Use the live preview and the size readout to find the smallest file that still looks good to you.

Are my images private?

Absolutely. All compression happens in your browser using the canvas API. Your images are never sent to or stored on any server.

Which formats are supported?

You can upload JPG, PNG and WebP images, and export to JPEG, WebP or PNG. WebP usually gives the smallest file size.

Will compression reduce image quality?

JPEG and WebP use lossy compression, so lower quality means smaller files. A setting around 70-85% keeps images looking sharp while cutting the size significantly.

Related tools