CanViewerCAN databases, in your browser

Open a DBC file, or ARXML, KCD, SYM and more, and browse its messages, signals, bit layouts and network. Decode, replay logs, compare, export and edit. Nothing leaves your machine.

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Formats and fidelity

Faithful

CanViewer shows what the file says. Lines it cannot read become visible problems with their line numbers, never a silent loss.

Private and offline

Files are read in your browser. The app makes no request outside its own origin, and after the first visit it works offline.

Many formats, one model

DBC opens instantly with CanViewer's own parser. Other formats are read with canmatrix, running in the browser, into the same model, so every view works for every format.

Made for real databases

CAN FD and J1939 aware, multiplexing (extended too), value tables, attributes and comments. Tested against 58 OEM databases and 114 files in other formats.

More than a viewer

Encode frames and replay candump and Vector ASC logs, compare two versions of a database, export CSV, JSON and C structs, and edit messages and signals and save them as DBC, with a list of anything the saved file would lack.