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Free Image Compressor Online

Compress JPEG, PNG, and WebP images directly in your browser. Convert formats and resize.

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Drop an image or click to upload

Supports JPEG, PNG, WebP

How to use Image Compressor

Three steps. Instant results.

1
Step 1
Drag and drop or select an image file from your device.
2
Step 2
Adjust the compression quality slider, output format, and max dimension if needed.
3
Step 3
Click Compress to see the before and after sizes, then download your optimized image.

How Image Compressor works

This tool uses the browser-image-compression library to reduce image file sizes entirely on the client side. It employs canvas-based resampling and JPEG quality reduction algorithms to intelligently scale down file sizes while attempting to preserve visual fidelity. The compression process is offloaded to a Web Worker thread, ensuring your browser remains responsive. Because it runs locally, your images are never uploaded to a remote server.

Why use this Image Compressor?

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100% private โ€” your images are never uploaded anywhere.
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Convert between formats like JPEG, PNG, and WebP.
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See clear before and after file size comparisons.
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Adjustable quality slider and resize options for perfect optimization.
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Fast processing using Web Workers.
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Completely free with no hidden limits or watermarks.

Frequently asked questions

Is this image compressor free?
Yes. It is free to use with no signup or limits.
Does it upload my images to a server?
No. Compression happens locally in your browser, so images never leave your device.
What image formats are supported?
JPEG, PNG, and WebP are supported.
How does the quality slider affect file size?
Lower quality reduces file size more aggressively. Higher quality preserves detail but keeps files larger.
Will it resize my image?
Very large images may be downscaled to a max dimension for faster processing. The tool keeps the original aspect ratio.
Can I compress multiple images at once?
This tool compresses one image at a time. Repeat the process for batch work.

Related free tools

Image to Text
Extract text from images.
Background Remover
Remove image backgrounds for free.
EXIF Viewer
Read metadata from photos.