图像工具

图像压缩器

在不损失画质的情况下缩小图像文件体积

将图像拖放到此处,或点击上传

支持 JPEG、PNG、WebP

您的文件不会离开您的设备。所有处理均在浏览器中完成。

About the Image Compressor

Large image files slow down websites, blow past email attachment limits, and eat up phone storage faster than most people realize — a single photo straight off a modern camera or smartphone can easily run 5-10MB. The Image Compressor shrinks JPEG, PNG, and WebP files down to a fraction of their original size while keeping the picture looking sharp, so you can post, send, or upload images without them getting rejected for being too big or taking forever to load.

Everything happens right in your browser tab. You pick a JPEG, PNG, or WebP file, the tool compresses it using the same codecs your browser already ships with, and you get back a smaller file in the same format — no server round-trip, no third-party image host touching your photo. Because the compression runs locally, there's no queue, no waiting on an upload bar, and no file size cap imposed by a backend; the only limit is what your device can handle.

This is the tool to reach for before attaching a photo to an email, uploading a product image to a store listing, or adding pictures to a page where load time matters for SEO. Since nothing leaves your machine, it's also a sensible choice for anything you'd rather not send to a random image-hosting service — screenshots with sensitive info, personal photos, or work documents included as images.

How to compress an image

Reduce a JPEG, PNG, or WebP file's size directly in your browser without uploading it anywhere.

  1. 1

    Select your image

    Choose the JPEG, PNG, or WebP file you want to shrink from your device.

  2. 2

    Let the browser process it

    The tool compresses the image locally in your browser — no file is sent to a server.

  3. 3

    Check the result

    Compare the compressed file size against the original to see how much space you saved.

  4. 4

    Download the compressed file

    Save the smaller version to your device in its original format, ready to attach, upload, or share.

Frequently Asked Questions

How does online image compression work?

Our tool uses your browser's built-in Canvas API to re-encode images at a lower quality setting. This reduces file size while maintaining acceptable visual quality. No files are uploaded to any server — everything happens locally in your browser.

Will compression reduce image quality?

Slight quality loss is normal with lossy compression (JPEG, WebP). At 70-80% quality, the difference is nearly invisible to the human eye while achieving 50-80% file size reduction. PNG compression is lossless — no quality loss at all.

What image formats are supported?

You can compress JPEG, PNG, and WebP images. The tool automatically detects the format and applies the best compression method for each type.