Frequently asked questions

converthubor is a free online file converter. It supports 902 input formats and 513 output formats across video, audio, images, documents, ebooks, 3D models and data files.

No. Upload a file, choose a format and download the result. No registration, no email, no watermark.

Files up to 200 MB are accepted. Very large videos may take a while — keep the tab open until the download starts.

Converted files and uploads are deleted automatically within a short period after conversion. We do not inspect or share file contents.

There is a fair-use rate limit per visitor to keep the service fast for everyone. Normal manual use will never hit it.

Yes — the same engine is available as an HTTP API. Contact us for details if you want to integrate it into your own product.

The website and converter interface are in English. The conversion engines themselves are language-independent.

The most common reasons are an unsupported source/target combination, a corrupt file, or a password-protected document. Try a different target format or re-export the source file.