Image Compressor

Compress images online — free and private

A photo straight off a phone or camera can be several megabytes — more than you need for a website, an email attachment, a marketplace listing, or a message. Compressing the image cuts the file size down, often dramatically, while keeping it looking good. This tool does that right in your browser: you pick how hard to squeeze, and it re-encodes the picture locally, without ever uploading it to a server.

That privacy point is the whole idea. Many "compress image" sites upload your photo to their machines, shrink it there, and hand back a download — so your picture, whatever is in it, passes through someone else's server. Here nothing leaves your device. The compression runs on your own phone or computer, so a personal photo stays personal.

How it works

Upload one image or a whole batch, choose a quality level, and tap Compress. The tool re-encodes each picture on your device and shows you the result: a preview, the new file size, and exactly how much smaller it is than the original — a clear "saved X%" so you can judge whether to keep it or squeeze harder. A single image comes back as one file; several come back bundled in a single ZIP. Then you share or download — nothing was uploaded at any point.

Quality, size, and the optional resize

Compression works by re-saving the image at a chosen quality. You get three levels:

Small (50%)

The strongest squeeze and the smallest files — great for thumbnails, email, or anywhere size matters more than fine detail.

Medium (75%)

The balanced default: a much smaller file that still looks good for the web, listings, and everyday sharing.

High (95%)

Near-original quality with a gentler reduction — for when the picture matters and you just want to trim some weight.

There's also an optional resize: capping the longest edge (for example to 1280px) shrinks the pixel dimensions as well, which cuts the file size much further. Leave it on "Keep size" to only re-encode, or pick a limit when a full-resolution photo is bigger than you need. If your main goal is a specific width or height rather than smaller bytes, our Image Resize tool is built for exactly that.

Formats: JPG, PNG, and WebP

It accepts JPG, PNG, and WebP images and lets you choose the output format. JPG gives the smallest files and is ideal for photos; PNG is lossless and keeps transparency, which suits graphics and screenshots; WebP is a modern format that's often smaller than both. One honest note about WebP: some browsers — notably older versions of iOS Safari — can't create WebP files at all. When the tool detects that, it simply hides WebP and offers JPG and PNG, so a compression never fails on your device. You can also switch the output format here — for instance, turn a bulky PNG screenshot into a much smaller JPG.

Common uses

People compress images to speed up a website, to get a photo under an email or upload size limit, to fit a marketplace or classifieds listing, to save space on a phone, or to send a batch of pictures without a slow upload. Because you can drop in several images at once and get a single ZIP back, it's just as handy for a folder of photos as for one.

Works on your phone

The tool is built to run in a phone's browser with nothing to install. Pick images from your library, choose a quality level, tap Compress, and when it finishes use Share to send the result to Files, Messages, WhatsApp, or any app that takes images — or save it straight to your device. Sharing is the reliable way to keep a file on a phone, so it's the primary action on mobile, with a download option as a fallback.

Privacy: your images never leave your device

Every step happens inside your browser — each image is read, re-encoded, and packaged locally, and nothing is uploaded, stored on a server, or seen by anyone else. There's no account to create and nothing to delete afterwards, because the files were never sent anywhere in the first place. For personal photos — family pictures, documents, anything private — that's the difference between compressing an image and handing it to an unknown server to do the same job.

Frequently asked questions

Which image formats can I compress?

JPG, PNG, and WebP, one image or many at once. You choose the output format; WebP appears only on browsers that can create it.

How much smaller will my image be?

It depends on the picture and the quality level you choose, but most photos shrink a lot. The tool shows the exact before-and-after size and the percentage saved, and an optional resize can shrink it further.

Does compressing reduce quality?

JPG and WebP are lossy, so a stronger setting trades some fine detail for a smaller file — that's the point of the quality levels. PNG is lossless. Preview the result and pick the setting that looks right to you.

Are my images uploaded to a server?

No. Everything runs in your browser — your images never leave your device, and nothing is stored or sent anywhere.