Reduce file size while keeping quality high
Our compressor uses WebAssembly-compiled codecs to decode your image and re-encode it at your chosen quality level. The entire process happens in a Web Worker, so your browser stays responsive.
Try Compress toolTrim images to the exact size you need
Drag the crop handles on the interactive canvas to select your desired area. Choose from preset aspect ratios or go freeform. The Canvas API exports your cropped region pixel-perfect.
Try Crop toolCombine multiple images into a single file
Upload up to 10 images, arrange them in your preferred layout, and adjust spacing and background. The merge is performed using the HTML Canvas API entirely in your browser.
Try Merge toolSwitch between image formats instantly
Select your target format and quality. Our WebAssembly codecs decode your original and re-encode it to the new format. You can instantly compare file sizes to pick the best option.
Try Convert toolOur technology is fundamentally different from other image tools. Instead of uploading your files to a remote server, we bring the processing power directly to your browser.
Drag and drop your image or click to browse. Supported formats include JPEG, PNG, and WebP. Files up to 50MB are accepted.
Choose your output format, quality level, crop region, or merge layout. Changes apply instantly with a live preview so you can see results before downloading.
Download your processed image with one click. No watermarks, no sign-ups. The file is generated entirely on your device and never touches any server.
Unlike other tools that upload your images to remote servers, we process everything directly in your browser using WebAssembly technology.
Everything runs locally in your browser using WebAssembly. No uploads, no servers, no tracking. Your files never leave your device.
WebAssembly-powered codecs deliver near-native performance. Process images in milliseconds, not minutes — no waiting for server round-trips.
No sign-ups, no watermarks, no file limits, no premium tiers. Every tool is free and open to everyone, forever.
Chrome, Firefox, Safari, Edge — desktop and mobile. No plugins or installations required. Just open the page and start working.
Yes, completely free. There are no hidden charges, premium tiers, or sign-up requirements. Every tool is available to everyone without limits.
No. All processing happens locally in your browser using WebAssembly and the Canvas API. Your images never leave your device. There is no backend server involved in processing — we simply serve the static website files.
We support JPEG, PNG, and WebP as input formats. For output, you can choose JPEG, PNG, WebP, or AVIF depending on the tool. AVIF offers excellent compression for modern browsers.
The maximum file size is 50MB per image. Since processing happens in your browser, very large files may take longer depending on your device's performance.
images4.fun works on all modern browsers including Chrome, Firefox, Safari, and Edge on both desktop and mobile devices. No plugins or extensions are required.
We use WebAssembly-compiled versions of industry-standard codecs (via jsquash) to decode your image and re-encode it at your chosen quality and format. This runs in a background Web Worker so your page remains responsive.