Question 1

Do my files get uploaded?

Accepted Answer

No. Every conversion runs in your browser — data files are parsed in memory, images are re-encoded with the Canvas API and audio is decoded with the Web Audio API. Nothing is sent to a server.

Question 2

Which formats are supported?

Accepted Answer

Data: CSV, TSV, JSON, NDJSON, Markdown tables, YAML and HTML tables in any direction. Images: PNG, JPEG and WebP with resizing. Audio/video: extract the audio track from an MP4, WebM, MP3 or WAV file as WAV. Text: Markdown to a standalone HTML page.

Question 3

What about Word, Excel and PowerPoint?

Accepted Answer

Export to CSV, Markdown or HTML from those apps and convert here. Native .docx/.xlsx/.pptx conversion is on the roadmap.

File Converter