Image Pixelate Tool

Image pixelation (mosaic processing) is a widely used technique for protecting personal information and ensuring privacy. Whether you need to hide email addresses or phone numbers in screenshots, obscure faces or license plates in photographs, or mask sensitive details before posting to social media, this tool makes it easy and secure.

This free online pixelation tool runs entirely in your browser, allowing you to apply mosaic effects to entire images with precise control over the effect intensity. Adjust the block size slider (2–100 px) to achieve anything from subtle information masking to bold pixel-art style effects. Real-time preview ensures you see exactly what you'll get before saving, taking just a few clicks to complete the entire process. The intuitive interface makes it accessible to users of all skill levels.

All image processing happens locally using the Canvas API—no files are ever uploaded to a server, guaranteeing your sensitive data stays completely private and secure. PNG, JPEG, and WebP images are exported in their original format to preserve quality, while unsupported formats are automatically converted to PNG for compatibility. No complex settings, registrations, or software installations are required; simply drag and drop your image to get started instantly. There are no file size limits, so you can process high-resolution images quickly and efficiently.

Perfect for masking personal information in internal documents, hiding addresses in real estate photos, preparing screenshots for reports, protecting privacy before social media posting, creating retro pixel-art design effects, processing manga or illustration backgrounds, concealing product details in merchandise photos, and redacting patient information in medical images. Whether you need to protect corporate confidentiality, safeguard legal document confidentiality, or preserve personal privacy, this pixelation tool handles all your image masking needs with ease and security.

Even large files and high-resolution images process quickly thanks to Canvas API optimization, with no file size limitations whatsoever. Your camera's high-megapixel photos work perfectly, with preview and output completion in seconds. The combination of speed, security, simplicity, and pixelation quality makes this online tool essential for anyone regularly handling sensitive images, whether for professional or personal use.