PrivConvert

PrivConvert is a browser-based file converter that keeps everything in memory, so files aren’t written to disk or stored on a server. There’s no account required and conversions are free up to 250MB.

It supports more than 100 tools across images, PDFs, documents, archives and common data formats. Conversions happen locally in the browser and the original file is removed once the process finishes.

• Formats: JPG, PNG, WebP, HEIC, SVG, AVIF, PDFs, Word, Excel, PowerPoint, ZIP, RAR, 7Z, TAR, JSON, CSV, XML, YAML, SQL
• Limits: free conversions up to 250MB, no accounts or data collection
• Encryption: open-source .priv format using AES-256-GCM that encrypts in the browser with no server contact

PrivConvert is provided by topriv. Official site: https://privconvert.com/