FormatDrop is a privacy-first file converter that runs entirely in your browser. Files never leave your device — there's no server upload, no account required, and no waiting. Supports 80+ formats across images (JPG, PNG, WebP, HEIC, AVIF, GIF, BMP, TIFF, SVG), video (MP4, MOV, AVI, MKV, WebM), audio (MP3, WAV, FLAC, AAC, OGG), and documents (PDF, DOCX, PPTX, EPUB). Batch convert multiple files at once.