Bitcoin Burger utility

Security & Privacy

Clear rules for what stays in your browser and what touches the public internet.

Client-side generators

Paper wallets, vanity addresses, and mnemonic tools create keys and phrases locally. Nothing is submitted to our servers.

Public data lookups

Address balances, fees, hashrate, and prices come from third-party APIs. Those requests only include public information you enter (for example an address).

No account wall

We do not ask you to register, connect a wallet, or store holdings on our infrastructure. Portfolio entries stay in your browser when you use that tool.

Your threat model

A connected browser is not an air gap. For significant savings, generate seeds offline and use hardware wallets for cold storage.

Tool-by-tool breakdown

ToolKeys / seedsNetwork calls
Paper wallet, Vanity, MnemonicGenerated in browserNone for generation
Address analyzerNever requestedExplorer API (public address data)
Fee estimator, Network statsN/Amempool.space (and related public APIs)
Price calculator, Portfolio, PredictionN/AMarket price APIs (e.g. CoinGecko)
QR generator, Unit converterN/ANone required for core convert/encode
Halving countdownN/ABlock height / chain tip APIs

Practical recommendations

  • • Never paste a real seed phrase or private key into any website unless you fully accept the risk.
  • • Prefer generating long-term storage material offline; verify restores with small test amounts first.
  • • Address lookups reveal which address you are interested in to the API provider—use a VPN or self-hosted explorer if that matters to you.
  • • Bookmark the official domain and double-check the URL before using generators.
  • • Hardware wallets remain the standard for meaningful balances; software tools here are companions, not a vault.
Mnemonic tools Paper wallet

Frequently asked questions

Do keys and seed phrases leave my device?
No. Paper wallets, vanity addresses, and BIP39 mnemonic tools generate material in your browser with Web Crypto APIs. Private keys and seed phrases are not uploaded to Bitcoin Burger servers—we do not operate a backend that receives them.
Which tools contact the public internet?
Tools that need live network or market data call third-party APIs (for example mempool.space for fees and address history, CoinGecko for prices, and blockchain.info for block height). Lookups for a Bitcoin address you paste will query a public explorer API—that is public chain data, not your private keys.
Should I generate a real wallet seed on a website?
For funds you care about, prefer an offline or air-gapped flow and a reputable hardware wallet. Online generators are useful for learning, testing, and small amounts—but treat any seed created on a connected computer as potentially exposed.
Do you require an account or wallet connection?
No. Bitcoin Burger does not require sign-up, KYC, or connecting a browser wallet. Portfolio data, when used, stays in local browser storage on your device.
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