Use this free Image Compressor to shrink the file size of your JPG, PNG, and WebP images — right in your browser. Drag in your photos, choose a quality and format, and download smaller images in seconds. Nothing is ever uploaded to a server.
Image Compressor
Compress JPG, PNG and WebP images online — free, unlimited, and 100% private
Upload Your Images
Results
How to Use This Image Compressor
- Add your images. Drag and drop them into the box, or click it to browse your device. You can add multiple images at once.
- Choose an output format. Keep the original format, or convert everything to JPEG, PNG, or WebP.
- Pick how you want to compress. Use By Quality % to set a compression level directly, or switch to By Target File Size and enter a size in KB or MB — the tool searches for the closest quality that fits.
- Optionally resize. Turn on resizing and set a maximum width to shrink oversized photos further.
- Compress and download. Click Compress Images, then download files one by one or grab them all as a single ZIP. Downloaded files are automatically renamed to include their new size, e.g. photo-245KB.jpg, so you can tell them apart from the originals at a glance.
How It Works
This tool runs entirely inside your web browser using HTML5 Canvas. When you compress an image, your browser redraws it onto a canvas and re-encodes it at the quality level and dimensions you choose. The resulting file is generated and offered to you as a download — your original photos are never sent to a server, which also means there's no upload wait and no file-size limit imposed by a backend.
Why Compress Your Images?
- Faster websites. Large, uncompressed images are one of the most common causes of slow-loading pages and poor Core Web Vitals scores.
- Better SEO. Page speed is a ranking factor — smaller images help your blog or website load faster on both desktop and mobile.
- Save storage space. Compressed photos take up far less room on your phone, computer, or cloud storage.
- Easier sharing. Stay under email attachment limits and upload limits on forms, marketplaces, and social platforms.
Tips for the Best Results
- Use JPEG for photos. It compresses photographic images well and is supported everywhere.
- Use PNG for logos, screenshots, and graphics with text or transparency — it's lossless and keeps sharp edges crisp.
- Use WebP for the smallest file sizes if your website or platform supports it — it typically beats JPEG and PNG at the same visual quality.
- Resize to your actual display size. A photo displayed at 800px wide doesn't need to stay 4000px wide — resizing often saves more space than lowering quality.
- Compress in a couple of passes. Try 80% quality first; if the file is still large, drop it to 60–65% and compare the preview.
Frequently Asked Questions
Is this image compressor really free?
Yes. It's completely free to use, with no sign-up, no watermark, and no limit on how many times you can use it.
Are my images uploaded to a server?
No. All compression happens locally in your browser using JavaScript and the HTML5 Canvas API. Your images never leave your device, which makes this tool safe for private or sensitive photos.
Will compressing my images reduce their quality?
JPEG and WebP use lossy compression, so higher compression does reduce quality slightly, though it's often barely noticeable at 70–85% quality. PNG output stays lossless — resizing is the main way to shrink PNG file sizes.
What image formats are supported?
You can upload JPG, PNG, and WebP images, and export them as JPEG, PNG, or WebP — including converting between formats, such as turning a PNG screenshot into a smaller JPEG.
Is there a limit on file size or number of images?
You can compress up to 30 images at a time, each up to 25MB, all in one batch. This is a practical limit to keep your browser responsive rather than a paywall.
Does this work on mobile phones?
Yes, the tool is fully responsive and works on modern mobile browsers, though compressing many large images at once will be faster on a desktop or laptop.
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