Free Image Compressor Online – Reduce Size Without Quality

Compress JPG, PNG & WebP images instantly in your browser. No upload, 100% private.

Image compression is essential for faster web page loading, saving storage space, and meeting upload size limits on social media and email. Our free online image compressor uses the HTML5 Canvas API to re-encode your images at a configurable quality level — reducing file size while keeping visual clarity nearly identical to the original.

Unlike server-based compressors, this tool processes everything directly in your browser. Your images are never uploaded to any server, ensuring complete privacy. It works offline after the page loads, making it perfect for students, bloggers, and developers who need quick image optimization without compromising on security.

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Drag & drop your image here

or click to browse files

Compression Quality

Low High 75%

Original Size

Compressed Size

Savings

Original

Compressed

🔒 Your images never leave your device. All compression runs locally in your browser.

How to Compress an Image Online

Follow these simple steps to reduce your image file size in seconds:

Upload your image — Drag and drop an image file or click the upload area to browse your files. Supports JPG, PNG, GIF, BMP, and WebP formats.

Adjust quality — Use the quality slider to find the right balance between file size and visual quality. Lower values mean smaller files.

Compare & download — Review the before/after comparison and size savings, then click Download to save your compressed image.

Frequently Asked Questions

How does the image compressor work?

It uses the HTML5 Canvas API to re-encode your image at a lower quality setting, reducing file size while preserving visual clarity. Everything runs in your browser — no server involved.

Is my image uploaded to a server?

No. Your image never leaves your device. All compression happens locally in your browser using client-side JavaScript. Your files remain 100% private.

What image formats are supported?

You can compress JPG, PNG, GIF, BMP, and WebP images. The output format preserves the original type where supported, defaulting to JPEG for best compression.

Does this tool work offline?

Yes! Once the page is loaded, the compressor works entirely offline since all processing is done in your browser. No internet connection is needed.

What is the maximum file size I can compress?

There is no hard limit, but very large files (50MB+) may be slow depending on your device's memory and processing power. Most images compress in under a second.