Bulk Image Compressor

Drop your images in, pick your settings, and download a ZIP of compressed files. Everything runs right in your browser -- your images never get uploaded to a server, and there's nothing to sign up for. It handles JPG, PNG, BMP, WebP, and GIF, up to 50 files at a time.

We built BulkImagePro because most compression tools make you upload files to someone else's server, process them one at a time, or nag you to create an account. This one doesn't do any of that. Your browser does all the work, so it's fast and private by default.

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How to Compress Images in Bulk Using BulkImagePro

The whole process takes about a minute. Here's how it works:

Step 1: Upload Your Images

Drag and drop up to 50 images into the upload box, or click "Select Files" to browse your computer. JPG, PNG, BMP, WebP, and GIF all work.

Step 2: Set a Maximum Width (Optional)

If your images are larger than you actually need, enter a max width in pixels and they'll get resized during compression. Leave it blank to keep original dimensions. For most websites, something between 1200px and 1920px hits the sweet spot between looking sharp and loading fast.

Step 3: Convert to JPG (Optional)

Tick this box if you want everything converted to JPG. It squeezes out the most file size savings, which makes it a good default for photos on the web. If you're working with logos, icons, or anything that needs transparency, skip this and stick with PNG.

Step 4: Download Your Files

Hit "Compress Images" and wait a few seconds. When it's done, you'll get a single ZIP file with everything inside. That's it -- no email required, no watermarks, no catch.

What Actually Makes This Tool Worth Using

There are a hundred image compressors out there. Here's why this one is different:

It runs in your browser. Your images never leave your machine. There's no upload, no server-side processing, and no one else ever sees your files. That matters if you're working with client assets, internal product photos, or anything you don't want floating around on someone else's infrastructure.

It handles batches properly. Most free tools cap you at 5 or 10 images and make you wait between batches. You can do 50 at once here.

No account, no install, no nonsense. Open the page, drop your files in, download the result. You don't need to hand over an email address or install a desktop app.

Who Actually Uses This

Web developers use it to get image file sizes down before deployment. A page with uncompressed images can easily add 5-10 seconds to load time, which tanks your Core Web Vitals and hurts search rankings.

E-commerce teams run product photo batches through it. When you've got hundreds of SKUs, compressing images one by one isn't realistic. Lighter images also mean faster product pages, which directly affects conversion rates.

Photographers and designers use it for sharing proofs and deliverables. You don't always need the full-resolution file -- sometimes you just need something small enough to email or upload to a project management tool without hitting a size limit.

Image Editing & Batch Editing Tips

Frequently Asked Questions

What image formats does BulkImagePro support for compression?

You can compress JPG, PNG, BMP, WebP, and GIF files. Most people are working with JPGs and PNGs, but we support the others in case you've got a mixed batch. If you need to change formats (say, PNG to WebP), check out the format converter instead.

What is the benefit of setting a maximum width?

Oversized images are one of the biggest causes of slow web pages. If someone uploads a 4000px-wide photo from their phone and you display it in an 800px column, you're forcing visitors to download pixels they'll never see. Setting a max width during compression handles both problems at once -- smaller dimensions and smaller file size. For most websites, 1200px to 1920px is plenty.

Does converting to JPG affect image quality?

A little, yes, but for photos it's usually not visible to the naked eye. JPG uses lossy compression, which means it throws away some data to make files smaller. For photographs and complex images, the tradeoff is almost always worth it. Where you'd want to avoid JPG is anything with sharp edges, text overlays, or transparency -- logos, icons, screenshots. Those look better as PNGs.