How does the image compressor work?

Our image compressor uses a binary search algorithm to find the optimal compression settings that achieve your exact target file size. It automatically adjusts quality parameters while preserving image dimensions and format.

What image formats are supported?

We support JPEG, PNG, and WebP formats. You can upload images in any of these formats and compress them to your desired file size.

What file sizes can I compress images to?

You can compress images to exact file sizes including 20KB, 50KB, 100KB, 500KB, 1MB, or any custom size you specify. The tool will find the best quality settings to achieve your target.

Is the image compressor free to use?

Yes, our image compressor is completely free to use. No registration, subscription, or payment required. You can compress unlimited images without any restrictions.

Will my images be stored or shared?

No, your images are processed entirely in your browser and are never uploaded to our servers. All compression happens locally, ensuring complete privacy and security of your files.

How accurate is the file size compression?

Our binary search algorithm provides highly accurate compression, typically achieving within 1-2% of your target file size. The precision depends on the original image characteristics and target size.

Can I compress multiple images at once?

Yes, you can upload and compress multiple images simultaneously. The tool supports batch processing, allowing you to compress several images to the same target file size efficiently.

What's the maximum image size I can upload?

The maximum file size depends on your browser's memory capacity, but typically you can upload images up to 50MB. For very large images, we recommend compressing them in smaller batches.

Does compression affect image quality?

Compression will reduce image quality to achieve smaller file sizes, but our algorithm optimizes the compression to maintain the best possible quality for your target file size.

Can I use compressed images commercially?

Yes, you retain full rights to your compressed images. You can use them for any purpose including commercial projects, websites, social media, or print materials.

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How to Compress Images Online

A complete step-by-step guide to compress images to exact file sizes

Video Tutorial

Watch this step-by-step video tutorial to learn how to compress images to exact file sizes

Watch Full Video Tutorial

Why Compress Images?

Image compression is essential for faster website loading, reduced storage space, and better user experience. Our online image compressor helps you achieve exact file sizes while maintaining optimal quality.

50%

Average file size reduction

Faster page loading

100%

Privacy protected

Step-by-Step Guide to Compress Images

Upload Your Images

Click the upload area or drag and drop your images. We support JPEG, PNG, and WebP formats. You can upload multiple images at once for batch processing.

Step 1: Upload images to the image compressor tool

Tip: For best results, use images larger than your target size. The compressor works by reducing quality, not dimensions.

Set Target File Size

Choose your desired file size from the preset options (20KB, 50KB, 100KB, 500KB, 1MB) or enter a custom size. The tool will automatically find the best quality settings to achieve this target.

Common targets:

• 20KB - Profile pictures, thumbnails
• 50KB - Social media posts
• 100KB - Website banners
• 500KB - Blog images
• 1MB - High-quality photos

Automatic Compression

Our binary search algorithm automatically adjusts compression settings to achieve your exact target file size. The process typically takes 2-5 seconds per image.

How it works: The algorithm tests different quality levels until it finds the optimal setting that produces your target file size with the best possible quality.

Preview and Download

Review the compressed image with before/after comparison. Check the file size and quality. Download individual images or all compressed images as a ZIP file.

Step 4: Preview compressed image results and download

Quality check: Compare the original and compressed images side by side to ensure the quality meets your requirements.

Best Practices for Image Compression

✅ Do's

• Start with high-quality original images
• Test different target sizes to find the sweet spot
• Use appropriate formats (JPEG for photos, PNG for graphics)
• Compress images before uploading to websites
• Keep backups of original images

❌ Don'ts

• Don't compress already compressed images
• Avoid extremely small target sizes for detailed images
• Don't use PNG for photos (JPEG is more efficient)
• Avoid multiple compression cycles
• Don't compress images that are already small

Technical Information

Supported Formats

JPEG, PNG, and WebP formats are fully supported. The compressor preserves the original format while optimizing the file size.

Privacy & Security

All compression happens in your browser. Images are never uploaded to our servers, ensuring complete privacy and security.

Accuracy

Our binary search algorithm typically achieves within 1-2% of your target file size, providing highly accurate compression results.

Ready to Compress Your Images?

Try our free image compressor now and see the difference!

Start Compressing Images