nanofile

Nanofile is a free file compressor that runs entirely inside your browser tab. There is no upload endpoint, so your files never leave your device. One drop zone handles 37 formats: images (JPG, PNG, WEBP, GIF, TIFF, AVIF, HEIC), documents (PDF, DOCX, XLSX, PPTX, ODT), vectors (SVG, EPS), code (HTML, CSS, JS, XML, JSON), audio (MP3, WAV, OGG, FLAC, M4A, AAC), fonts and 3D assets (TTF, OTF, WOFF2, EPUB, GLB, STL), plus ZIP and CBZ creation. Format is detected by magic bytes, so mislabelled files still route correctly. Median reduction is around 68%. No account, no watermarks, no daily limits, no queue. It even works with your network disconnected after the page loads. Built by Convert Case Ltd, the team behind convertcase.net and vidshift.io.