Frequently Asked Questions (FAQ)
Common questions about in-browser processing
Q:Is PureConverter safe for confidential files?
Yes, absolutely. Your files are never sent over the internet or to remote servers. All audio, video, and image processing happens locally within your browser's sandbox. This makes PureConverter ideal for businesses, journalists, or anyone handling sensitive personal data.
Q:What is the maximum file size limit?
Unlike cloud-based converters that charge or enforce rigid limits (such as 100 MB), we do not have a server-side limit. The only restriction is the amount of free RAM on your device and the memory allocation limits of your web browser (typically between 1.5 GB and 3 GB on desktop browsers).
Q:Why does the first conversion take a moment to start?
Each kind of conversion uses its own WebAssembly engine (FFmpeg for video and audio at ~32 MB, ImageMagick for images at ~15 MB, and smaller engines for PDFs, spreadsheets and 3D models). To keep the site light, an engine is only downloaded when you need it: when you open a direct conversion link or add a file. After the first download it stays cached, so later conversions start instantly.
Q:Can I use the site without an internet connection?
Yes! Once you load the site for the first time and the WebAssembly binaries are downloaded, the browser caches them. You can disconnect from the internet and continue dragging and converting your files completely offline.
Q:Which codecs and formats are supported?
Images (PNG, JPG, WEBP, AVIF, HEIC, JPEG XL, GIF, TIFF, PSD, camera RAW and more), video (MP4, MKV, WEBM, MOV, AVI, WMV, FLV, MPEG, TS, 3GP, OGV), audio (MP3, WAV, AAC, FLAC, OGG, OPUS, M4A, AIFF, WMA, AC3), PDF (to images or text), spreadsheets (XLSX, XLS, ODS, CSV, TSV, JSON, HTML) and 3D models (FBX, OBJ, glTF/GLB, STL, PLY, COLLADA, USDZ). We also offer professional profiles like Apple ProRes, Avid DNxHR and 24-bit PCM WAV. See the Formats page for the full list.
Q:Who is Gregorium Labs?
Gregorium Labs is a development initiative focused on building modern software, SaaS, utilities, and digital games, with an emphasis on usability, performance, and transparency.