Compress and resize images in your browser
Compress, resize and convert your photos and graphics for the web, social media and email — in a few clicks.
Free image compressor and resizer
Compress and Resize Images with ReSizer.AI
Welcome to ReSizer.AI, the free image compressor and resizer that makes it simple to compress, resize and convert your pictures without losing quality. Reduce the file size of JPG, PNG, WebP and AVIF right in your browser — nothing is uploaded. Whether you're a designer, web developer, blogger or photographer, it's the fast way to optimize images for your website, social media and email.
How to Optimize Your Images in 3 Simple Steps
Compress, resize or convert your images in just a few clicks. Follow these simple steps to get the best results for your website or project.
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Step 01
Add Your Image
Drag and drop your file, or select it from your device. Supports PNG, JPG, WebP and AVIF.
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Step 02
Adjust Settings
Pick your format, set the quality, then resize or crop to suit your needs.
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Step 03
Download the Image
Save your smaller, compressed image instantly and use it wherever you need.
Everything You Need to Optimize Images
Drag-and-Drop Interface
ReSizer.AI offers an intuitive drag-and-drop interface that lets you resize and compress images in just a few clicks. No steep learning curve — just instant results.
Customizable Settings
Fine-tune the quality, resize the dimensions, crop, rotate and keep or strip EXIF metadata. Compare the before and after side by side with the live quality slider.
Powerful Compression Options
Compress JPEG, PNG, WebP and AVIF with modern encoders — including lossless PNG. Preview the result in real time to find the perfect balance between file size and image quality.
Privacy You Can Trust
All image processing happens locally in your browser. Your files are never uploaded to any server — nothing ever leaves your device, for total privacy.
Cross-Platform Compatibility
Use ReSizer.AI on any device or browser — no installs, no hassle. It runs right in your browser on desktop, tablet and phone, and even works offline.
Lightning-Fast Performance
Powered by WebAssembly, ReSizer.AI compresses at native speed with no waiting — even for high-resolution photos and large batches.
How ReSizer.AI Benefits Your Workflow
Faster Website Load Times
Smaller, compressed images cut page load times, improving user experience and your search rankings.
Reduced Bandwidth Costs
A smaller file size means less bandwidth and data for you and your visitors.
Accessible to Everyone
From professional creatives to casual users, anyone can resize and optimize their images effortlessly — free, with no signup.
Compress Your First Image Today — Free!
ReSizer.AI is completely free and always will be. Start compressing and resizing your images now and take your visuals further — without spending a dime.
Open the compressor