Frontend ENVs: Common
Deprecated ENVs
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Deprecated environment variables
| Variable | Type | Description | Compulsoriness | Default value | Example value | Introduced in version | Deprecated in version | Comment |
|---|---|---|---|---|---|---|---|---|
| NEXT_PUBLIC_FAVICON_GENERATOR_API_KEY | string | RealFaviconGenerator API key | Required | - | <your-secret> | v1.11.0 | v1.16.0 | Replaced FAVICON_GENERATOR_API_KEY |
| FAVICON_GENERATOR_API_KEY | string | RealFaviconGenerator API key | Required | - | <your-secret> | v1.16.0+ | v1.37.0 | We don’t use RealFaviconGenerator anymore |
| NEXT_PUBLIC_IS_OPTIMISTIC_L2_NETWORK | boolean | Set to true for optimistic L2 solutions | Required | - | true | v1.17.0 | v1.24.0 | Replaced by NEXT_PUBLIC_ROLLUP_TYPE |
| NEXT_PUBLIC_IS_ZKEVM_L2_NETWORK | boolean | Set to true for zkevm L2 solutions | Required | - | true | v1.17.0 | v1.24.0 | Replaced by NEXT_PUBLIC_ROLLUP_TYPE |
| NEXT_PUBLIC_OPTIMISTIC_L2_WITHDRAWAL_URL | string | URL for optimistic L2 -> L1 withdrawals | Required | - | https://app.optimism.io/bridge/withdraw | v1.17.0 | v1.24.0 | Renamed to NEXT_PUBLIC_ROLLUP_L2_WITHDRAWAL_URL |
| NEXT_PUBLIC_L1_BASE_URL | string | Blockscout base URL for L1 network | Required | - | 'http://eth-goerli.blockscout.com' | - | v1.24.0 | Renamed to NEXT_PUBLIC_ROLLUP_L1_BASE_URL |
| NEXT_PUBLIC_HOMEPAGE_SHOW_GAS_TRACKER | boolean | Set to false if network doesn’t have gas tracker | - | true | false | - | v1.25.0 | Replaced by NEXT_PUBLIC_GAS_TRACKER_ENABLED |
| NEXT_PUBLIC_NETWORK_GOVERNANCE_TOKEN_SYMBOL | string | Network governance token symbol | - | - | GNO | v1.12.0 | v1.29.0 | Replaced by NEXT_PUBLIC_NETWORK_SECONDARY_COIN_SYMBOL |
| NEXT_PUBLIC_SWAP_BUTTON_URL | string | Application ID in the marketplace or website URL | - | - | uniswap | v1.24.0 | v1.31.0 | Replaced by NEXT_PUBLIC_DEFI_DROPDOWN_ITEMS |
| NEXT_PUBLIC_HOMEPAGE_SHOW_AVG_BLOCK_TIME | boolean | Set to false if average block time is useless for the network | - | true | false | v1.0.x+ | v1.35.0 | Replaced by NEXT_PUBLIC_HOMEPAGE_STATS |
| NEXT_PUBLIC_CELO_L2_UPGRADE_BLOCK | number | Indicates the block number when the Celo-type chain transitioned to L2. This is used to display links to the Epoch block page from a regular block page. | - | - | 26369280 | v1.37.0+ | v2.2.0 | Removed; configuration done on the API side |
| NEXT_PUBLIC_NAVIGATION_HIDDEN_LINKS | Array<LinkId> | List of external links hidden in the navigation. Supported ids are eth_rpc_api, rpc_api | - | - | ['eth_rpc_api'] | v1.16.0+ | v2.3.0 | Use NEXT_PUBLIC_API_DOCS_TABS instead to hide tabs on the API docs page. |