Web Image Optimizer: Compress JPEG, PNG, and WebP Files Free
This tool compresses and converts JPEG, PNG, and WebP images directly in your browser. You can process up to 100 files at once, each up to 100 MB, without uploading anything to a server.
Click or drag images here
Supports JPEG, PNG, WebP ā¢ Max 100 files ā¢ 100 MB each
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How to Use This Tool
- Click or drag your image files into the upload area. JPEG, PNG, and WebP files are supported. You can add up to 100 files, each up to 100 MB.
- Choose your output format from the dropdown.
- Use the quality slider to reduce image quality and the size slider to reduce dimensions. Both sliders only reduce, not increase.
- Click āOptimize Imagesā and wait for your browser to finish.
- Download each file separately, or download all optimized images together as a ZIP.
When You Need This
Image files slow down web pages and fill up storage fast. A photo taken on a phone can be several megabytes before any editing.
This tool is a good fit when you have a large batch of images to process. Uploading 50 or 100 files to a server-based tool means waiting for uploads, processing, and downloads. Here, your browser handles everything without that round trip.
It also works well when you cannot share files with a third-party server. Product photos, client documents, or personal images stay on your device from start to finish.
Browser-Based Processing: What It Means
Your browser does all the work using your deviceās memory and processing power. No file is sent to any server at any point.
Browser-based compression is not as aggressive as server-side tools. The results are usually close, but exact output depends on the file and your device. For most web and sharing purposes, the difference is not noticeable.
Processing many large files at once uses more memory than your device may have. If your browser slows down or becomes unresponsive, try fewer files or smaller ones at a time.
Privacy: How This Tool Works
No image you add here is uploaded anywhere. Everything runs on your device.
Nothing is stored, shared, or sent to any server. Close the tab and every file is gone.
Frequently Asked Questions
Does this tool upload my images to a server?
No. All processing happens in your browser. Your files never leave your device.
Which image formats does this tool support?
JPEG, PNG, and WebP. You can also convert between these formats using the output dropdown.
Can I control how much compression is applied?
Yes. The quality slider reduces image quality and the size slider reduces dimensions. Both only reduce, not increase.
Can I process multiple images at once?
Yes. You can add up to 100 files at a time, each up to 100 MB, and optimize them all in one step.
Is this tool suitable for confidential or private images?
Yes. No file leaves your device. The tool runs entirely in your browser, so no one else can access your images.