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Free Image Compressor Online

Compress PNG, JPG, and WebP images instantly without losing quality. Reduce file sizes by up to 90%. Batch compress multiple images at once. 100% private — your images never leave your browser. No sign-up needed.

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Drop images here or click to browse
Supports PNG, JPG, WebP, GIF, BMP — Multiple files allowed
PNG JPG WebP GIF BMP Multiple Files
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💡 Tips for Best Compression Results

Get the smallest file sizes while keeping your images looking great:

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Use WebP for Web Images

WebP is 25–35% smaller than JPG at the same quality. All modern browsers support it. Great for websites and apps.

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80% Quality is the Sweet Spot

Quality settings between 75–85% are virtually indistinguishable from 100% to the human eye, but produce files 60–70% smaller.

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Scale Down Large Images

A 4000×3000px photo displayed at 800px wide is wasteful. Scale it down first — this alone can reduce size by 80%.

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Choose the Right Format

Use PNG for logos and icons with transparency. Use JPG or WebP for photos and complex images without transparency.

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Smaller Images = Faster Websites

Google's Core Web Vitals score improves with smaller images. Faster sites rank better and convert more visitors.

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Try Different Settings

Use the preview comparison to find the lowest quality setting where the image still looks acceptable for your use case.

📊 Format Comparison Guide

Not sure which format to compress to? Here's a quick guide:

Format Typical Reduction Transparency Best For Browser Support
JPG 40–80% ❌ No Photos, backgrounds, banners ✅ Universal
PNG 10–30% ✅ Yes Logos, icons, screenshots ✅ Universal
WebP ⭐ 50–90% ✅ Yes All web images — best choice ✅ Modern browsers
⭐ Recommendation: Convert all your web images to WebP at 80% quality for the best balance of file size and visual quality. You'll typically save 50–70% compared to your original files.

📖 How to Use the Image Compressor

1

Upload Your Images

Drag and drop one or more images into the upload area, or click to browse your files. You can upload multiple images at once for batch compression.

2

Set Compression Settings

Use the Quality slider to control compression — lower values mean smaller files. Use the presets (Balanced, High, Max) for quick settings. Optionally choose an output format and scale down large images.

3

Compress All Images

Click Compress All Images to process everything at once. Each image card shows a before/after comparison with the savings percentage.

4

Download Your Images

Download each image individually or click Download All (ZIP) to get all compressed images in a single ZIP file. Completely free, no watermarks.

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❓ Frequently Asked Questions

How do I compress an image without losing quality? +
Use a quality setting of 80–90%. At this level, compression removes data the human eye cannot detect, making the image visually identical to the original while being significantly smaller. For even better results, convert to WebP format — it delivers superior quality at smaller sizes than JPG or PNG.
Why should I compress images for my website? +
Uncompressed images are one of the biggest causes of slow websites. Smaller images mean:

• Faster page load times — visitors don't wait
• Better Google rankings — page speed is a ranking factor
• Lower bandwidth costs — fewer MBs transferred
• Better mobile experience — mobile users on slower connections benefit most
What is the difference between lossy and lossless compression? +
Lossy compression (JPG, WebP) permanently removes some image data to achieve much smaller file sizes. At high quality settings (80%+), the loss is invisible to the human eye.

Lossless compression (PNG) reorganizes the data without removing any of it, preserving 100% of the original image. File size reductions are smaller but there is zero quality degradation.
Can I compress multiple images at once? +
Yes! Select multiple files at once in the file picker (hold Ctrl or Cmd while selecting), or drag and drop multiple files at the same time. All images are processed individually in your browser and you can download them all at once as a ZIP file.
Is my data private? Are images uploaded? +
Your images are never uploaded anywhere. All compression is done locally in your browser using the HTML5 Canvas API. Your files never leave your device. No server processes them, no one can see them, and nothing is stored. You can even go offline and the tool continues to work.
Why is my PNG file larger after compression? +
PNG uses lossless compression, which means the quality slider has minimal effect on PNG output. For significant PNG compression, try converting to WebP (which supports transparency like PNG) or reduce the image dimensions using the Scale Down option. WebP can typically reduce a PNG file by 50–70%.