Ok my bad. The second argument to createTx should be an object and not an array. const tags = [...]; .. bundlrInst.createTransaction(selectedFile, { tags });

This was a great way to hit the ground running on Arweave and Bundlr! Thanks!! I had a question about tags, tried adding some more tags other than the content type but it doesn't work. Here's the code: // replaces uploadImage in index.js const uploadFile = async () => { let transaction = await bundlrInst.createTransaction(selectedFile, [{ name : "Content-Type" , value : JSON_TYPE }, { name : "Application" , value : 'MY-COOL-APP' }, { name : "slug" , value : 'item-slug' }, { name : "category" , value : 'news' }]); await transaction.sign(); await transaction.upload(); setURI( ` ${ARWEAVE_DOT_NET} / ${transaction.id} ` ); getBalance(); } The document is created and is accessible but when I query the transaction through the arweave graphql interface, the 'tags' field is empty. Tags reference: docs-bundlr-network / docs / client / tags Thank you.