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Free Image Compressor – Reduce File Size Without Losing Quality
Image Compressor is a free online tool that reduces the file size of your images by up to 90% while maintaining visual quality. Batch process unlimited images, target specific sizes like 50KB or 1MB, and download instantly.
Settings
Batch Image Compressor
Drag & drop up to 100 images here. Supports JPG, PNG, WebP.
What is Image Compressor?
Image Compressor is a free web-based tool that reduces the file size of JPG, PNG, and WebP images without losing visible quality. It uses advanced smart lossy compression algorithms to remove unnecessary data, allowing you to shrink images to specific sizes like 50KB, 100KB, or 1MB for faster website loading and easier sharing.
Unlike other tools that charge for batch processing, FastTools allows you to upload and compress up to 100 images at once. All processing happens 100% locally in your browser, which means your photos are never uploaded to a server, guaranteeing complete privacy and speed.
How to Use Image Compressor
1
Drag and drop up to 100 images (JPG, PNG, WebP) into the box.
2
The tool automatically compresses them. Use the 'Quality' slider to adjust file size.
3
Need a specific size? Set the 'Max Size' slider to 0.05MB (50KB) or 1MB.
4
Visual Preview: Compare the 'Original' vs 'Compressed' image side-by-side.
5
Click 'Download All' to get a ZIP file of your optimized images.
Key Features
Smart Lossy Compression: Reduces file size by 90% with no visible change.
Batch Processing: Compress 100+ images at the same time.
Specific Size Targeting: Compress to 20KB, 50KB, 100KB, or 1MB exactly.
Privacy First: 100% browser-based processing. No server uploads.
Format Support: Works with JPG, PNG, JPEG, and WebP.
No Limits: Unlimited files, no daily caps, no watermarks.
Use Cases
Website Speed: Smaller images make your website load faster (Core Web Vitals).
Job Applications: Compress resume photos to meet strict 500KB upload limits.
Email Limits: Send more photos in a single email without hitting the 25MB cap.
Social Media: Stop Instagram and WhatsApp from ruining your photo quality.
Storage: Free up Gigabytes of space on your phone by archiving optimized photos.
About Image Compressor
Why choose FastTools over others? Most online compressors limit you to 20 images or upload your private photos to a server. FastTools Image Compressor runs entirely on your device using WebAssembly technology. This makes it faster (no upload wait time), safer (data stays on your phone/laptop), and more powerful (unlimited batch processing). We give you professional-grade compression controls—usually found in paid software—completely for free.
💡 Pro Tip
To hit a precise target like 50KB: Upload your image, then lower the 'Max Size' slider until the 'Compressed Size' indicator turns green and shows a number below 50KB. Our algorithm will do the rest.
Frequently Asked Questions
How do I compress an image to 50KB?
Upload your image, then slide the 'Max Size' slider down to 0.05 MB. The tool will aggressively optimize the image quality to fit into 50KB.
Is this tool free?
Yes, it is 100% free. We don't have premium plans, watermarks, or hidden fees.
Is it safe for private photos?
Yes. Unlike other websites, we do not upload your images to any cloud server. All compression happens locally on your own device.
Which operates best: Lossy or Lossless?
This tool uses 'Smart Lossy' compression. It removes invisible data to save 80-90% space. Lossless only saves 5-10%. For web and sharing, Lossy is far better.
Can I use this on iPhone?
Yes! Open this page in Safari on your iPhone, select photos from your library, compress them, and save them back to your Files.