Inspect before broadcast
Confirm destinations, amounts, output scripts, locktime and opt-in RBF signalling before handing signed hex to a broadcaster.
Tools · Privacy-first
Raw Transaction Decoder
Inspect exactly what a serialized Bitcoin transaction contains before you broadcast it or while debugging wallet output. The decoder exposes transaction IDs, version, locktime, Replace-By-Fee signalling, byte size, weight and vsize, every input and output, standard address types, witness stacks, and OP_RETURN data.
It accepts structurally encoded signed or unsigned raw transaction hex. It deliberately does not broadcast, contact a node, look up previous outputs, or claim that the transaction is valid.
The network selector changes address formatting only. It does not make a network request.
Decoded transaction
Identity and structure
Look up this TXID
Opens a pre-filled Transaction Lookup. No node is queried until you submit it there.
Inputs
0Outputs
0
Runs locally
Your raw transaction stays in this browser.
Local input: Raw transaction hex and the network used only to format output addresses. Network effect: None when decoding. The raw transaction is processed in a browser worker and is not sent to BitcoinStats or added to the URL. A handoff from Transaction Lookup uses tab-scoped sessionStorage once and is removed immediately after this page reads it.
Raw transaction
Browser worker
Decoded fields
After this page and its worker have loaded, decoding continues without internet access. Reloading while offline depends on whether your browser retained the page assets in cache.
Purpose and limits
What this decoder can tell you
Understand serialized size
Compare total and stripped bytes, witness contribution, weight units and virtual size. Fee remains unknown without every spent prevout amount.
Structural, not authoritative
The result does not validate signatures or scripts, query chain state, evaluate mempool policy, detect spent inputs, or guarantee relay or confirmation.
The parser is a locally bundled, version-pinned @scure/btc-signer build. Reference vectors are cross-checked against Bitcoin Core. Input is intentionally excluded from URLs, persistent browser storage, and site analytics. A raw transaction opened from Transaction Lookup is passed once through sessionStorage and removed before decoding.