Compress Images in Bulk Online
Optimize thousands of images at once. Private, unlimited, and free processing directly in your browser.
Drag & Drop Images or Folders Here
Support for 1000+ images, nested folders, and all major formats (JPEG, PNG, WebP)
Why Use Our Batch Compressor?
100% Private & Secure
All processing happens locally in your browser. No server uploads—your files never leave your device.
Unlimited Batch Processing
Process 1,000+ images in one session without artificial limits. Handle everything from small batches to entire archives.
Zero Waiting Time
No upload delays—processing starts immediately. Complete large batches in minutes instead of hours.
Flexible Quality Control
Use smart presets or adjust the quality slider for precise control. Settings persist across sessions for consistent results.
Completely Free
No hidden costs, watermarks, or signup requirements. Full access to all features at no charge.
Batch Compression in 3 Steps
Select Your Images
Drag and drop a folder or select hundreds of files. We support JPG, PNG, WebP, and BMP formats.
Choose Your Settings
Select a preset like 'Balanced' for web use, or fine-tune the quality slider. You can also convert formats (e.g., JPG to WebP).
Compress & Download
Watch the real-time progress bar. Once done, download your optimized images individually or as a single ZIP file.
Optimize Your Workflow
Developers & SEO specialists
Compress full image libraries to shrink page weight, improve Core Web Vitals like LCP, and support better rankings with lower bounce rates.
E-commerce teams
Optimize product, category, and campaign images in bulk so storefront pages load faster, keeping shoppers engaged and improving conversion rates.
Photographers & designers
Reduce file sizes before sharing or archiving while preserving detail and color. Ideal for portfolios, client previews, and social media assets using high-quality presets.
Marketing & content teams
Turn one-by-one image prep into a single batch step for blog posts, social media, and email campaigns, so landing pages and newsletters open faster for every visitor.
FAQ
Is it really free? What's the catch?
Yes, it is 100% free. There is no catch. Because the processing happens on your device, we don't pay for expensive server processing power, allowing us to offer this tool for free.
How many images can I compress at once?
There is no hard limit. Users routinely compress 1,000+ images. The only limit is your computer's memory (RAM). For massive batches (2,000+), we recommend doing it in chunks.
What is the real difference between the compression presets?
"Quality" targets a quality setting of around 85-90, ideal for print-like clarity. "Balanced" targets ~75, offering the best trade-off for most websites. "Size" can go as low as 50-60, prioritizing speed above all else. The custom slider gives you full control between 1 and 100.
Does it support transparent PNGs?
Yes! Our compressor preserves transparency in PNG and WebP files while still reducing file size significantly.
Is my data safe?
Absolutely. Your files are processed entirely within your browser. They are never uploaded to our servers or seen by anyone else.
Can I convert images to WebP?
Yes. You can upload JPG or PNG files and choose to output them as WebP, which often provides better quality at smaller file sizes.
How do I save my custom settings?
Adjust the quality slider to your preferred level and click the 'Save' icon. Your browser will remember this setting for your next visit.
How do I choose the right image format?
In general, JPG is best for photos, PNG for logos, icons, and images with text or transparency, and WebP for most modern web use cases where you want the smallest file size at similar quality. This tool lets you compress and convert between these formats in bulk, so you can start with a high-quality preset, review the results, and then adjust if you need even smaller files.