Compress thousands of JPG, PNG, WebP, and BMP images right in your browser. No uploads, no limits, and no registration required. Experience truly fast and private batch optimization.
Support for 1000+ images, nested folders, and all major formats (JPEG, PNG, WebP)
This is not just a feature; it's our foundational promise. Unlike virtually every other online image compressor, our tool processes everything locally on your machine, within your browser. Your sensitive photos, client work, or proprietary images never leave the safety of your computer. There is no upload to a server, no data transfer, and no risk of your files being seen or stored by anyone else. This makes us the most secure and confidential bulk image compressor on the market, perfect for professionals and privacy-conscious users.
Stop wasting hours compressing images one by one. Our tool is engineered from the ground up for true bulk work. Whether you're a web developer optimizing an entire e-commerce site, a photographer processing a wedding shoot, or a marketer preparing a year's worth of content, you can do it all in one go. This massive capacity transforms your workflow, saving you invaluable time and eliminating repetitive, mundane tasks.
We believe you should be in control. Our presets are intelligently calibrated, but your project might have unique needs. The custom quality slider gives you granular control to find the precise point where size and quality meet your standards. The ability to save your custom setting is a game-changer for brand consistency, ensuring all your website or campaign images have a uniform look and feel every single time.
Your workflow involves various file types, and your compressor should too. We provide robust support for the most popular formats on the web. Optimize lossy JPGs for photos, compress lossless PNGs while preserving transparency for logos and graphics, handle animated BMPs, and embrace the modern, high-efficiency WebP format for superior web performance.
Powerful tools should be accessible. Our bulk image compressor is completely free, with no hidden tiers or premium-only features. We don't ask for your email, require a password, or force you to create an account. Just open the page and start working. It's that simple.
Click to select files or drag and drop your entire image library. Our tool is built to handle over 1,000 images in a single session, making it the most powerful bulk image compressor available online.
Choose from three smart presets designed for any use case: Best Quality: Minimal compression, perfect for photographers and high-resolution displays. Balanced (Recommended): The ideal blend of significant size reduction and excellent visual quality for web and general use. Smallest Size: Maximum compression for the fastest loading times, perfect for SEO and email. Or, use the Custom slider to fine-tune the exact quality setting you need. You can even save your custom preset for future use!
Click "Compress." Because there are no uploads, the process is incredibly fast. Watch as your images are optimized in real-time, then download them all in a conveniently zipped file.
Improve your Google PageSpeed Insights and Lighthouse scores overnight. Shrink image payloads to drastically reduce Largest Contentful Paint (LCP) times and improve Core Web Vitals. A faster site leads to lower bounce rates, higher search rankings, and better user engagement. Use our "Smallest Size" or a custom low-quality setting for maximum impact.
Speed is money. Every second a customer waits for a product page to load, your conversion rate drops. Use our tool to batch-optimize all your product images, category banners, and promotional graphics. A faster, smoother shopping experience leads directly to increased sales and happier customers.
Maintain visual integrity while making your work shareable. Create lightweight web portfolios that load instantly, send client previews that don't clog inboxes, and prepare assets for web use without visible quality loss. Use the "Best Quality" setting or a custom high-quality preset to protect your art.
Streamline your content pipeline. Prepare a month's worth of blog post images, social media graphics, and email campaign assets in a single session. Ensure your emails are delivered quickly and your blog posts load instantly for every reader, on any device.
In today's digital landscape, speed is a primary ranking factor for search engines like Google. Large image files are the number one cause of slow websites. A bulk image compressor is your most effective tool for tackling this issue. By reducing the total size of your web pages, you directly improve key metrics like Time to First Byte (TTFB) and Largest Contentful Paint (LCP). A study by Google found that as page load time goes from 1s to 3s, the probability of a bounce increases by 32%. Optimizing your images isn't just a technical tweak; it's a fundamental part of retaining visitors and growing your audience.
JPG (or JPEG): Best for photographs and complex images with many colors and gradients. It uses "lossy" compression, meaning it removes some data to achieve smaller sizes, but our algorithm does this intelligently to minimize visible impact. PNG: Best for graphics with flat colors, text, or transparency (like logos). It uses "lossless" compression, which means no quality is lost, but file sizes can be larger than JPGs. WebP: The modern format developed by Google. It offers both lossy and lossless compression at significantly smaller file sizes than JPG and PNG, respectively. It's the best choice for web performance if your audience uses modern browsers. Our tool allows you to batch-convert and compress to WebP. BMP: Best for simple animations. Compression focuses on reducing the number of colors in the palette.
We use modern web technologies like JavaScript and WebAssembly to run the entire compression engine directly within your browser. The tool accesses the images you select from your local drive, processes them in your computer's memory (RAM), and then allows you to download them. Your files never travel across the internet to our servers.
Our tool is highly optimized, but processing a very large number of high-resolution images is memory-intensive. For most modern computers, handling 1000+ standard web images is not a problem. If you are working with extremely large files (e.g., 20MB+ each), we recommend processing them in slightly smaller batches (e.g., 200-300 at a time) for the smoothest experience.
"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.
Absolutely not. Your images are your own. The output is always clean and watermark-free.
While the processing happens locally, browsers have memory limitations. We recommend individual image sizes below 30MB for optimal performance. The tool is designed for web and application assets, not necessarily gigapixel-sized scientific images.
When you define a custom compression level, you can click a "Save" button. This setting is then stored locally in your browser's storage. The next time you visit our site from the same browser, your custom preset will be available for you to select with one click.