Image Compressor

A free image compressor shrinks your JPG, PNG, WebP and AVIF files without visible quality loss — right in your browser. You drop the images, adjust a quality slider, and download compressed versions that load faster on every device.

REXAI's Image Compressor handles files up to 20MB each, in bulk. No signup, no watermark, no upload to a third-party server. Everything runs locally on your device.

Why Compress Images?

Images are the heaviest part of almost every web page. A single uncompressed photo can weigh 5MB — as much as an entire website should. Compressing images cuts load times, improves Google PageSpeed scores, reduces bandwidth costs, and makes pages load faster on mobile networks.

For photographers and designers, compression also makes it practical to share full galleries by email or upload hundreds of images to a client without slowing down your own internet.

What REXAI's Image Compressor Does

You upload one or many images, choose a quality level, and the tool compresses each one in your browser. Preview the before-and-after file sizes, then download individually or as a ZIP. No conversion quality loss, no watermarks, no expiration.

Supported Formats

JPG — the most common photo format. Good compression, universal support. PNG — best for screenshots and graphics with sharp edges. Lossless when needed. WebP — Google's modern format. 25–35% smaller than JPG at the same quality. AVIF — the newest format. Even smaller, growing browser support.

How to Compress Images Online

1. Upload your images. Drag files into the drop zone or click to browse. You can select multiple at once — there's no batch limit.

2. Choose a quality level. Move the slider between 10% and 100%. Lower values create smaller files. For most photos, 70–80% is invisible to the eye and saves 60–80% of the file size.

3. Preview and compare. See the original size next to the compressed size for each image. Cancel individual files if you don't like the result.

4. Download. Save each image individually, or download everything as a single ZIP file.

Which Quality Level Should You Use?

90–100% — for archiving or print. Barely any size savings but zero visible change. 75–85% — best for websites, portfolios, and social media. Small file sizes with no visible difference at normal viewing size. 50–70% — for thumbnails, previews, or when file size matters more than perfect quality. Below 50% — only when you need the smallest possible file and can accept visible compression.

Who Uses Image Compression

Web developers cut page weight and improve Core Web Vitals. Bloggers make posts load faster on mobile. Photographers share client galleries without huge file transfers. E-commerce sellers speed up product pages and reduce hosting costs. Social media managers upload to platforms with file-size limits without losing quality.

Frequently Asked Questions

• Is it really free? Yes. Unlimited compressions, no signup, no watermark, no hidden limits.
• Are my images uploaded anywhere? No. Compression runs entirely in your browser using JavaScript. Your images never leave your device.
• What's the maximum file size? Up to 20MB per image. There's no limit on how many images you can process.
• Will compressing reduce quality? At 75–85% quality, no — the difference is invisible at normal viewing sizes. Below 50%, you may notice artifacts in fine details.
• Can I compress multiple images at once? Yes. Select or drag multiple files, and they all process together.
• Does it work on mobile? Yes. The tool works on any modern browser, including on iOS and Android.
• What's the best format for websites? WebP is the best balance of quality and file size. Use it when the destination supports it. Fall back to JPG for photos, PNG for screenshots.

Start Compressing Images

Drop your files above and compress them in seconds. Smaller files, faster pages, no signup — all in your browser.