Tsubami is a free browser-based toolkit for everyday image and PDF jobs. Compress images to a 100 KB or 200 KB target, resize and convert images, merge PDFs, extract pages, and organize documents.

Selected files are processed locally in your browser without a tool account or file-processing upload. Ordinary hosting, analytics and advertising requests are separate from file processing.

The site includes 43 image and PDF/document tools. Supported formats and size/page limits are shown before use. No OCR or AI. Office conversions simplify layouts rather than reproducing complex source documents. Advertising support is planned after approval.