About ResizeFlow

JSM-Image.com is a free, private, browser-based image toolkit. It resizes, converts, compresses, crops and handles PDFs without uploading your files to a server.

Why we built it

Most online image tools upload your photos to a cloud server. We wanted the opposite: everything runs locally in your browser using HTML5 Canvas, Web Workers and WebAssembly. Your images never leave your device. That makes it faster, more private, and usable even offline after first load.

Who is behind it

ResizeFlow is maintained by an independent developer based in Montreal, Canada. It started as a personal need to batch-resize photos for the web without losing quality and without trusting third-party servers with private images.

What makes it different

• 100% local processing — zero server uploads for image operations
• Batch support with ZIP export
• Modern formats: JPG, PNG, WebP, AVIF, HEIC, SVG
• Privacy-focused: no account, no watermark
• Free forever, supported by optional ads after consent

Our commitment

We keep the tool simple, fast, and honest. No dark patterns, no forced uploads, no hidden fees. If you have feedback, please reach out via our contact page.