Most online converters upload your files to their servers. This one does not: images, documents, spreadsheets, audio and video are converted right in your browser.
Accepts: images (PNG, JPG, WebP, GIF, BMP, SVG, ICO, AVIF, HEIC), PDF, Word (.docx), Markdown, HTML, TXT,
spreadsheets (XLSX, XLS, ODS, CSV, TSV), JSON, XML, YAML, and video (MP4, MOV, WebM, MKV) or audio. Video can become GIF (first 15 seconds), WebM or MP4 (recorded in real time, so it takes as long as the video), a still image, or just the audio. Mixed batches are fine.
Add files to begin.
Why uploading is a problem
Uploading hands a copy of your files to a company you may know little about: contracts, ID scans, family photos or unreleased work. Server-based converters also make you wait for uploads and downloads, and they often cap file size or the number of files.
How this works instead
Your browser does the conversion itself. The files you add are read locally, converted in memory and handed back to you for download. Nothing is sent to a server, so there is no upload to wait for and no copy left behind.
How to check for yourself
Open your browser's developer tools, switch to the Network tab and convert a file. You will see the page and, for some formats, a small helper library being downloaded, but no request carrying your file.