Zazuko RDF Conv.

The Zazuko RDF Converter is a free, browser-based web application for converting RDF data between serialization formats. It is developed and hosted (at converter.zazuko.com) by Zazuko, a Swiss consultancy based in Biel/Bienne that specializes in RDF and linked-data tooling for developers and data scientists, alongside other utilities such as a SHACL Playground, the prefix.zazuko.com prefix lookup, and the Sketch data-model visualizer. The converter is open-source and, notably, runs 100% in the browser: it is a bundle of static files (buildable and self-hostable on any plain HTTP server) with no server-side processing, so RDF data is parsed and reserialized entirely client-side and never leaves the user's machine.

Because RDF is an abstract graph model of subject-predicate-object triples (and quads when named graphs are involved), "conversion" here means re-encoding the same triples into a different concrete syntax rather than changing the underlying data model. The tool builds on the RDF/JS ecosystem, using the @rdfjs/formats-common parser/serializer registry (exposed through Zazuko's own rdfjs-elements web components and the rdf-editor). Supported formats on both the input and output side include format:turtle, format:n-triples, format:rdf-nquads, format:trig, format:rdf-xml, format:json-ld, and Notation3 (format:notation3). Turtle, TriG and N3 output is pretty-printed with abbreviated namespace prefixes, while the line-based N-Triples/N-Quads and RDF/XML serializers produce more compact output.

Within the format-conversion landscape it occupies the RDF-native niche: whereas graph tools like tool:graphinout or tool:networkx translate between property-graph and network file formats, the Zazuko converter sits alongside general RDF toolkits such as tool:apache-jena, tool:rdflib and tool:dotnetrdf, and dedicated CLI converters like tool:rdf2rdf, differing mainly in being a zero-install, privacy-preserving GUI. Zazuko's related Expressive RDF Mapper addresses the harder, complementary problem of lifting non-RDF source data into RDF.

Its strengths are convenience, correctness across the common W3C serializations, and readable prefixed output. Limitations follow from its scope and browser runtime: it converts only among RDF syntaxes (it does not import CSV, spreadsheets, or property-graph formats, nor perform SPARQL, reasoning, or SHACL validation), and because processing is in-memory in JavaScript, very large graphs may strain browser resources. It is best understood as a quick, dependable ad-hoc utility rather than a batch or pipeline tool.