OptiBulk Pro is a professional-grade image compressor and PDF management tool that works 100% offline. No files ever leave your device.
Most online tools upload your data to a server, creating privacy risks and storage limits. OptiBulk Pro uses your browser's local processing power (WASM) to give you unlimited, secure, and instant results even without an internet connection.
Use our 'Exact Size Lock' feature. Select your files, enter '100' in the KB field, and our engine will perform iterative loops to find the best quality that stays under the limit.
Yes. We don't have a backend. We don't have a database. Your data is processed in RAM and destroyed when you close the tab.