Configuration Reference
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This comprehensive guide covers all configuration options for self-hosted Onetime Secret instances.
Configuration Files
Section titled “Configuration Files”Onetime Secret uses multiple configuration files:
.env- Environment variables for common settings. Use for simple configuration and Docker deployments without modifying YAML files. (Copy from.env.example)etc/config.yaml- Main application configuration using ERB templates. Environment variables are integrated here, making it easy to see how each setting is applied. (Copy frometc/defaults/config.defaults.yaml)
Main Configuration
Section titled “Main Configuration”The main configuration file is etc/config.yaml, which uses ERB templates to integrate environment variables.
Getting started:
- Copy the example:
cp etc/defaults/config.defaults.yaml etc/config.yaml - Edit values as needed for your deployment
- Most common settings can be overridden with environment variables
View the complete configuration file: config.defaults.yaml
Key Configuration Sections
Section titled “Key Configuration Sections”Here are the most important sections you’ll likely need to customize:
---site: host: <%= ENV['HOST'] || 'localhost:3000' %> # Turns https/http on or off when generating links ssl: <%= ENV['SSL'] == 'true' || false %> # IMPORTANT: After setting the secret, it should not be changed. # Be sure to create and store a backup in a secure offsite # location. Changing the secret can lead to unforeseen issues # like not being able to decrypt existing secrets. secret: <%= ENV['SECRET'] || nil %> # API and UI Configuration interface: ui: # Controls whether the web interface is enabled # When false, only a basic explanation page is shown enabled: <%= ENV['UI_ENABLED'] != 'false' %> # Form field visibility flags # Controls which optional fields appear on the secret creation form. # All default to true (visible). Set to 'false' to hide from the UI. # These are independent of API guest_routes, which gate endpoint access. capabilities: burn: <%= ENV['UI_CAPABILITIES_BURN'] != 'false' %> show: <%= ENV['UI_CAPABILITIES_SHOW'] != 'false' %> receipt: <%= ENV['UI_CAPABILITIES_RECEIPT'] != 'false' %> recipient: <%= ENV['UI_CAPABILITIES_RECIPIENT'] != 'false' %> # Header configuration # Controls branding and navigation in the site header header: # Control switch to enable/disable header customization enabled: <%= ENV['HEADER_ENABLED'] != 'false' %> # Branding configuration for the masthead logo and site identity branding: # Logo lockup: icon + optional text mark in the masthead logo: # Vue component name or image URL (e.g. DefaultLogo.vue, /img/logo.svg) url: <%= ENV['LOGO_URL'] || 'DefaultLogo.vue' %> alt: <%= ENV['LOGO_ALT'] || 'Share a Secret One-Time' %> href: <%= ENV['LOGO_LINK'] || '/' %> # Show the site name as a text mark next to the logo icon. # Set false for icon-only display; SITE_NAME remains active # in page titles, MFA labels, and emails regardless. show_name: <%= ENV['LOGO_SHOW_NAME'] != 'false' %> # Product name used across the application: # - Masthead text mark (when logo.show_name is true) # - Browser page title # - MFA authenticator app issuer label # - Outbound email sender name # Falls back to i18n key if not set. site_name: <%= ENV['SITE_NAME'] || 'One-Time Secret' %> # Navigation configuration navigation: # Enable/disable header navigation entirely enabled: <%= ENV['HEADER_NAV_ENABLED'] != 'false' %> # Footer link configuration (public pages) # These links appear in the footer of each page footer_links: # Global toggle to enable/disable all footer links enabled: <%= ENV['FOOTER_LINKS'] == 'true' %> # Organized groups of links groups: - name: legal i18n_key: web.footer.legals links: - text: Terms of Service i18n_key: web.layout.terms_of_service # Replace with your own terms URL or use relative path like /terms url: <%= ENV['TERMS_URL'] %> - text: Privacy Policy i18n_key: web.layout.privacy_policy # Replace with your own privacy URL or use relative path like /privacy url: <%= ENV['PRIVACY_URL'] %> - name: resources i18n_key: web.footer.resources links: - text: Docs i18n_key: web.footer.docs # Replace with your documentation URL url: <%= ENV['DOCS_URL'] || 'https://docs.onetimesecret.com/' %> - text: Status i18n_key: web.COMMON.status # Replace with your status page URL if you have one url: <%= ENV['STATUS_URL'] || 'https://status.onetimesecret.com/' %> - name: support i18n_key: web.footer.support links: - text: About i18n_key: web.COMMON.about # Replace with your about page URL url: <%= ENV['ABOUT_URL'] || 'https://onetimesecret.com/about' %> - text: Contact i18n_key: web.footer.contact url: <%= ENV['CONTACT_URL'] || '/feedback' %> # Workspace footer links (authenticated users only) # Separate from footer_links which are for public pages workspace_links: # Global toggle to enable/disable all footer links enabled: <%= ENV['WORKSPACE_LINKS'] == 'true' %> links: - text: API Docs i18n_key: web.footer.api_docs url: <%= ENV['WORKSPACE_API_DOCS_URL'] || 'https://api.onetimesecret.com/' %> - text: Branding Guide i18n_key: web.footer.branding_guide url: <%= ENV['WORKSPACE_BRANDING_GUIDE_URL'] || 'https://docs.onetimesecret.com/' %> - text: Feedback i18n_key: web.TITLES.feedback url: <%= ENV['WORKSPACE_FEEDBACK_URL'] || '/feedback' %> # Controls whether the API endpoints are available. When disabled, the API # is completely disabled. Requests to /api/* will return 404. api: enabled: <%= ENV['API_ENABLED'] != 'false' %> # Guest API routes for anonymous access # When enabled, /api/v3/guest/* endpoints allow unauthenticated requests guest_routes: # Global toggle - disables all guest routes when false enabled: <%= ENV['API_GUEST_ROUTES_ENABLED'] != 'false' %> # Fine-grained controls (checked only when enabled=true) conceal: <%= ENV['API_GUEST_CONCEAL'] != 'false' %> generate: <%= ENV['API_GUEST_GENERATE'] != 'false' %> reveal: <%= ENV['API_GUEST_REVEAL'] != 'false' %> burn: <%= ENV['API_GUEST_BURN'] != 'false' %> show: <%= ENV['API_GUEST_SHOW'] != 'false' %> receipt: <%= ENV['API_GUEST_RECEIPT'] != 'false' %> # Configuration options for secret management secret_options: # Default Time-To-Live (TTL) for secrets in seconds # This value is used if no specific TTL is provided when creating a secret default_ttl: <%= ENV['DEFAULT_TTL'] || nil %> # Available TTL options for secret creation (in seconds) # These options will be presented to users when they create a new secret # Format: String of integers representing seconds ttl_options: <%= (ENV['TTL_OPTIONS'] || nil) %> # Settings for the passphrase field that protects access to secrets passphrase: # Require users to enter a passphrase when creating secrets required: <%= ENV['PASSPHRASE_REQUIRED'] == 'true' || false %> # Minimum number of characters required for passphrases # Default to 4 chars to prevent trivially guessable passphrases while # maintaining backward compatibility with existing integrations. minimum_length: <%= ENV['PASSPHRASE_MIN_LENGTH'] || 4 %> # Maximum number of characters allowed for passphrases maximum_length: <%= ENV['PASSPHRASE_MAX_LENGTH'] || 128 %> # Enforce complexity requirements (uppercase, lowercase, numbers, symbols) enforce_complexity: <%= ENV['PASSPHRASE_ENFORCE_COMPLEXITY'] == 'true' || false %> # How long (in seconds) a generated password remains visible on the # receipt page after creation. Set to 0 to disable receipt-page display. generated_value_display_ttl: <%= ENV['GENERATED_VALUE_DISPLAY_TTL'] || 60 %> # Settings for password generation (when users click "Generate Password") password_generation: # Default length for generated passwords default_length: <%= ENV['PASSWORD_GEN_LENGTH'] || 12 %> # Character sets to include in generated passwords character_sets: # Include uppercase letters (A-Z) uppercase: <%= ENV['PASSWORD_GEN_UPPERCASE'] != 'false' %> # Include lowercase letters (a-z) lowercase: <%= ENV['PASSWORD_GEN_LOWERCASE'] != 'false' %> # Include numbers (0-9) numbers: <%= ENV['PASSWORD_GEN_NUMBERS'] != 'false' %> # Include symbols (!@#$%^&*()_+-=[]{}|;:,.<>?) symbols: <%= ENV['PASSWORD_GEN_SYMBOLS'] != 'false' %> # Exclude ambiguous characters (0, O, l, 1, I) to prevent confusion exclude_ambiguous: <%= ENV['PASSWORD_GEN_EXCLUDE_AMBIGUOUS'] != 'false' %> # Registration and Authentication settings authentication: # Can be disabled altogether, including API authentication. enabled: <%= ENV['AUTH_ENABLED'] != 'false' %> # Allow users to create accounts. This can be disabled if you plan # to create accounts manually or enable during setup when accounts # can be created and then disabled to prevent any new users from # creating accounts. signup: <%= ENV['AUTH_SIGNUP'] != 'false' %> # Generally if you allow registration, you allow signin. But there # are circumstances where it's helpful to turn off authentication # temporarily. signin: <%= ENV['AUTH_SIGNIN'] != 'false' %> # By default, new accounts need to verify their email address before # they can sign in. This is a security measure to prevent spamming # and abuse of the system. If you're running a private instance or # an instance for your team or company, you can disable this feature # to make it easier for users to sign in. autoverify: <%= ENV['AUTH_AUTOVERIFY'] == 'true' || false %> # When enabled, the homepage secret form is not available unless # the user is logged in. Similar to a disabled homepage, but still # shows the header with logo and navigation links. This allows for # a more restrictive mode where only authenticated users can create # secrets while maintaining site navigation and branding. required: <%= ENV['AUTH_REQUIRED'] == 'true' %> # Colonel (admin) accounts are managed via the CLI: # bin/ots customers role promote user@example.com # bin/ots customers role demote user@example.com # bin/ots customers role list # Restrict account creation to specific email domains while allowing # secret-sharing with any email address. When set, only email addresses # from the listed domains can create accounts. This is useful for # organizations that want to limit signups to their own domains while # still allowing secrets to be shared with anyone. # Format: List of domain names (e.g., example.com, company.org) # If empty or not set, signups are allowed from any domain (default). # Environment variable: ALLOWED_SIGNUP_DOMAIN (comma-separated list) allowed_signup_domains: <%= ENV['ALLOWED_SIGNUP_DOMAIN']&.split(',')&.map(&:strip) || [] %> # Links to documentation. For onetimesecret.com, this is # docs.onetimesecret.com. support: host: <%= ENV['SUPPORT_HOST'] || nil %> # Session configuration # Controls browser cookie and server-side session behavior. # Session handling is auth-mode agnostic (works with simple or full mode). session: # Session secret for HMAC signing. Falls back to site.secret if not set. secret: <%= ENV['SESSION_SECRET'] %> # Session lifetime in seconds (default: 24 hours) expire_after: 86400 # Cookie name key: 'onetime.session' # Require HTTPS for cookies (recommended: true in production) secure: <%= ENV['SSL'] == 'true' || false %> # SameSite cookie attribute (strict|lax|none) # Required for Stripe/OAuth redirects - 'strict' blocks cookies on cross-site GET navigations same_site: lax # Prevent JavaScript access to cookies (always true in Rack) httponly: true # Security Configuration # Additional security settings beyond middleware security: # Content Security Policy (CSP) Configuration # # When enabled, adds Content-Security-Policy headers to responses. # - Development mode: Less restrictive headers to allow hot reloading # - Production mode: Strict headers with nonce-based script protection # # The nonce is available via `req.env['onetime.nonce']` for custom # script/style assets. Backend views add it automatically. # # ENV: CSP_ENABLED (default: false) csp: enabled: <%= ENV['CSP_ENABLED'] == 'true' || false %>
features: # Incoming Secrets Feature # Allows anonymous users to send encrypted secrets to pre-configured recipients # via a dedicated web form at /incoming. Recipients receive email notifications. incoming: # Enable or disable the incoming secrets feature enabled: <%= ENV['INCOMING_ENABLED'] == 'true' || false %> # Maximum character length for the memo/subject field memo_max_length: <%= ENV['INCOMING_MEMO_MAX_LENGTH'] || 50 %> # Default TTL for incoming secrets in seconds (7 days = 604800) default_ttl: <%= ENV['INCOMING_DEFAULT_TTL'] || 604800 %> # Optional default passphrase for all incoming secrets (nil = no passphrase) default_passphrase: <%= ENV['INCOMING_DEFAULT_PASSPHRASE'] || nil %> # Recipients who can receive incoming secrets # Each recipient needs an email and optional display name. # Email addresses are hashed at startup and never exposed in API responses. # # Environment Variable Format: # INCOMING_RECIPIENT_N=email[,name] # where N is 1, 2, 3, etc. and name is optional # # Examples: # INCOMING_RECIPIENT_1=support@example.com,Support Team # INCOMING_RECIPIENT_2=security@example.com,Security Team # INCOMING_RECIPIENT_3=admin@example.com (name defaults to 'admin') # recipients: - <%= ENV['INCOMING_RECIPIENT_1']&.split(',') %> - <%= ENV['INCOMING_RECIPIENT_2']&.split(',') %> - <%= ENV['INCOMING_RECIPIENT_3']&.split(',') %> - <%= ENV['INCOMING_RECIPIENT_4']&.split(',') %> domains: enabled: <%= ENV['DOMAINS_ENABLED'] == 'true' || false %> # The default domain used for link URLs. When not set or empty, # site.host is used. default: <%= ENV['DEFAULT_DOMAIN'] || nil %>
# Domain validation and certificate management strategy # Options: # - passthrough: No validation or cert management # - approximated: Use approximated.app API for SSL certs and validation (requires cluster config) # - caddy_on_demand: Use Caddy's on-demand TLS (requires internal ACME endpoint) validation_strategy: <%= ENV['DOMAINS_VALIDATION_STRATEGY'] || 'passthrough' %>
# Approximated proxy configuration (required for 'approximated' strategy) approximated: api_key: <%= ENV['APPROXIMATED_API_KEY'] || nil %> proxy_ip: <%= ENV['APPROXIMATED_PROXY_IP'] || nil %> proxy_host: <%= ENV['APPROXIMATED_PROXY_HOST'] || nil %> proxy_name: <%= ENV['APPROXIMATED_PROXY_NAME'] || nil %> vhost_target: <%= ENV['APPROXIMATED_VHOST_TARGET'] || nil %>
# Internal ACME endpoint configuration (for 'caddy_on_demand' strategy) # This endpoint allows Caddy to verify domains before issuing certificates. # # When enabled is true, the ACME app is auto-mounted inside the main # application process and available on the loopback interface at the # main app's port (e.g. http://127.0.0.1:3000/api/internal/acme/ask). # # When enabled is false, the ACME app must be run as a standalone # process: rackup apps/internal/acme/config.ru # It will bind to the listen_address and port configured below. # # The listen_address and port settings only apply to standalone mode. acme: enabled: <%= ENV['ACME_ENDPOINT_ENABLED'] == 'true' %> # IP address to bind to in standalone mode (should always be localhost) listen_address: <%= ENV['ACME_LISTEN_ADDRESS'] || '127.0.0.1' %> # Port for standalone mode (Caddy's ask directive points here) port: <%= ENV['ACME_PORT'] || '12020' %> # Organizations UI # Shows the organization switcher in the navigation bar. Organizations # always exist under the hood (every customer has one for Stripe billing). # This flag controls whether users can see and switch between multiple orgs. organizations: enabled: <%= ENV['ENABLE_ORGS'] == 'true' %> sso_enabled: <%= ENV['ORGS_SSO_ENABLED'] == 'true' %> custom_mail_enabled: <%= ENV['ORGS_CUSTOM_MAIL_ENABLED'] == 'true' %> incoming_secrets_enabled: <%= ENV['ORGS_INCOMING_SECRETS_ENABLED'] == 'true' %>
# Main Database Configurationredis: # Redis/Valkey connection URI - Compatible with Redis, Valkey, and other # Redis-compatible servers. # # Environment Variable Precedence (highest to lowest): # 1. VALKEY_URL or REDIS_URL - Explicit connection string # 2. IN_DOCKER=1 - Force Docker configuration (redis://host.docker.internal:6379) # 3. AUTO_DETECT_DOCKER=1 - Enable automatic Docker detection via /.dockerenv file # 4. Default - Local development (redis://CHANGEME@127.0.0.1:6379) # # Format: redis://[:password@]host[:port]/[db-number] # Examples: # - redis://mypassword@localhost:6379 # Simple password auth # - redis://user:pass@localhost:6379 # Username/password auth # - redis://host.docker.internal:6379 # Docker environment # - redis://127.0.0.1:6379 # Local development uri: >- <%= ENV['VALKEY_URL'] || ENV['REDIS_URL'] || (ENV['IN_DOCKER'] == '1' || (ENV['AUTO_DETECT_DOCKER'] == '1' && File.exist?('/.dockerenv')) ? 'redis://host.docker.internal:6379' : 'redis://CHANGEME@127.0.0.1:6379') %> # Database Mapping Configuration # By default, all data types use database 0 for simplified connection pooling # and compatibility with Redis-as-a-Service providers. For advanced setups, # you can separate data across different Redis logical databases (0-15) # by setting environment variables or modifying the values below. dbs: custom_domain: <%= ENV['VALKEY_DBS_CUSTOM_DOMAIN'] || ENV['REDIS_DBS_CUSTOM_DOMAIN'] || 0 %> customer: <%= ENV['VALKEY_DBS_CUSTOMER'] || ENV['REDIS_DBS_CUSTOMER'] || 0 %> metadata: <%= ENV['VALKEY_DBS_METADATA'] || ENV['REDIS_DBS_METADATA'] || 0 %> secret: <%= ENV['VALKEY_DBS_SECRET'] || ENV['REDIS_DBS_SECRET'] || 0 %> feedback: <%= ENV['VALKEY_DBS_FEEDBACK'] || ENV['REDIS_DBS_FEEDBACK'] || 0 %>
# Sending Emailsemailer: # Local Development with Mailpit # ----------------------------- # Mailpit is a dev SMTP server that captures emails for testing # Install: brew install mailpit # Start: mailpit # Web UI: http://localhost:8025 # # :mode: smtp # Use SMTP mode for local testing # :from: secure@onetimesecret.com # Sender address # :from_name: OTS Support # Sender name # :host: 127.0.0.1 # Mailpit host # :port: 1025 # Mailpit default SMTP port # :user: ~ # No auth needed for Mailpit # :pass: ~ # No auth needed for Mailpit # :auth: false # Disable SMTP auth for Mailpit # :tls: false # Disable TLS for local testing
# Production Settings (for reference) # ---------------------------------- mode: <%= ENV['EMAILER_MODE'] || 'smtp' %> region: <%= ENV['EMAILER_REGION'] || 'smtp' %> from: <%= ENV['FROM_EMAIL'] || ENV['FROM'] || 'CHANGEME@example.com' %> from_name: <%= ENV['FROM_NAME'] || 'Support' %> reply_to: <%= ENV['REPLYTO_EMAIL'] || ENV['FROM_EMAIL'] || nil %> host: <%= ENV['SMTP_HOST'] || 'smtp.provider.com' %> port: <%= ENV['SMTP_PORT'] || 587 %> user: <%= ENV['SMTP_USERNAME'] %> # The double quotes are important b/c credentials can have characters that break YAML parsing. pass: "<%= ENV['SMTP_PASSWORD'] %>" auth: <%= ENV['SMTP_AUTH'] || nil %> tls: <%= ENV['SMTP_TLS'] %>
# Email Provider DNS Validation Settings# --------------------------------------# Configuration for sender domain validation strategies. These settings# control how DNS records are generated for DKIM, SPF, and related email# authentication when setting up custom mail sender domains.## Each provider has sensible defaults; override only when needed.# All settings are optional - the system works without this section.#email_providers: # AWS SES configuration ses: # AWS region for SES endpoints (affects MX record values) # Override via EMAIL_PROVIDERS_SES_REGION env var region: <%= ENV['EMAIL_PROVIDERS_SES_REGION'] || 'us-east-1' %> # Number of DKIM selectors (SES uses 3 by default) dkim_selector_count: 3 # SPF include domain spf_include: amazonses.com
# SendGrid configuration sendgrid: # Branding subdomain prefix (appears in CNAME records) # Override via EMAIL_PROVIDERS_SENDGRID_SUBDOMAIN env var subdomain: <%= ENV['EMAIL_PROVIDERS_SENDGRID_SUBDOMAIN'] || 'em' %> # DKIM selector names dkim_selectors: - s1 - s2 # SPF include domain spf_include: sendgrid.net
# Lettermint configuration # # Lettermint has TWO separate APIs with different auth: # 1. Sending API - uses x-lettermint-token header (project token) # 2. Team API - uses Authorization: Bearer header (team token) # # Domain provisioning requires the Team API token. # lettermint: # Project token for Lettermint Sending API (email delivery) # Required when emailer.mode is 'lettermint' # Override via LETTERMINT_API_TOKEN env var api_token: <%= ENV['LETTERMINT_API_TOKEN'] %> # Team token for Lettermint Team API (domain provisioning) # Required for custom mail sender domain management # Override via LETTERMINT_TEAM_TOKEN env var team_token: <%= ENV['LETTERMINT_TEAM_TOKEN'] %> # API base URL (for enterprise/on-premise deployments) # Override via LETTERMINT_BASE_URL env var api_base_url: <%= ENV['LETTERMINT_BASE_URL'] || 'https://api.lettermint.co/v1' %> # SPF CNAME subdomain prefix (e.g., 'lm-bounces' creates lm-bounces.yourdomain.com) # Override via EMAIL_PROVIDERS_LETTERMINT_SPF_CNAME_PREFIX env var spf_cname_prefix: <%= ENV['EMAIL_PROVIDERS_LETTERMINT_SPF_CNAME_PREFIX'] || 'lm-bounces' %> # SPF CNAME target domain (Lettermint maintains SPF at this target) # Override via EMAIL_PROVIDERS_LETTERMINT_SPF_CNAME_TARGET env var spf_cname_target: <%= ENV['EMAIL_PROVIDERS_LETTERMINT_SPF_CNAME_TARGET'] || 'bounces.lmta.net' %>
mail: truemail: # Available validation types: :regex, :mx, :mx_blacklist, :smtp default_validation_type: :regex # Required for :smtp validation verifier_email: <%= ENV['VERIFIER_EMAIL'] || 'CHANGEME@example.com' %> #:verifier_domain: <%= ENV['VERIFIER_DOMAIN'] || 'example.com' %> #:connection_timeout: 2 #:response_timeout: 2 #:connection_attempts: 3 #:validation_type_for: # 'example.com': :regex # # Truemail will only validate email addresses that match the # domains listed in :allowed_domains. If the domain is not # listed, the email address will always be considered invalid. allowed_domains_only: false # # Email addresses in this list will always be valid. #:allowed_emails: [] # # Email addresses in this list will always be invalid. #:blocked_emails: [] # # Addresses with these domains will always be valid #:allowed_domains: [] # # Addresses with these domains will always be invalid #:blocked_domains: [] # # Exclude these IP addresses from the MX lookup process. #:blocked_mx_ip_addresses: [] # # Name servers to use for MX et al record lookup. # Default is CloudFlare, Google, Oracle/OpenDNS servers. dns: - 1.1.1.1 - 8.8.4.4 - 208.67.220.220 #:smtp_port: 25 # # End smtp validation after the first invalid response rather than # retrying, followed by trying the next server. Can reduce the time # time to validate an email address, but may not catch all issues. smtp_fail_fast: false # # Parse the content of the SMTP error message to determine if the # email address is valid. This can be useful for some SMTP servers # that don't return exact answers. smtp_safe_check: true # # Whether to disable the RFC MX lookup flow. When true, only DNS # validation will be performed on MX and Null MX records. not_rfc_mx_lookup_flow: false # # Override default regular expression pattern for email addresses # and/or the content in SMTP error messages. #:email_pattern: /regex_pattern/ #:smtp_error_body_pattern: /regex_pattern/ # # Log to the console, a file, or both. The ruby process must have # write access to the log file. The log file will be created if it # does not exist. Log file rotation is not handled by the app. logger: # One of: :error (default), :unrecognized_error, :recognized_error, :all. tracking_event: 'error' stdout: true # log_absolute_path: '/home/app/log/truemail.log'
internationalization: enabled: <%= ENV['I18N_ENABLED'] == 'true' || false %> default_locale: <%= ENV['I18N_DEFAULT_LOCALE'] || 'en' %> # Date/time display format. Accepts a preset keyword or a date-fns pattern. # Setting date_format alone controls both date-only and date+time display. # Set datetime_format only if you need a different format for date+time contexts. # # Presets: # locale - browser-native formatting (default) # iso8601 - 2026-03-21 / 2026-03-21 14:30:00 # us - 03/21/2026 / 03/21/2026 2:30:00 PM # eu - 21/03/2026 / 21/03/2026 14:30 # eu-dot - 21.03.2026 / 21.03.2026 14:30 # uk - 21 Mar 2026 / 21 Mar 2026 14:30 # long - March 21, 2026 / March 21, 2026 2:30 PM # # Or pass a raw date-fns pattern: https://date-fns.org/docs/format date_format: <%= ENV['I18N_DATE_FORMAT'] || 'locale' %> datetime_format: <%= ENV['I18N_DATETIME_FORMAT'] || 'locale' %> fallback_locale: ca: [ca_ES, en] ca-ES: [ca_ES, en] da: [da_DK, en] da-DK: [da_DK, en] de: [de, de_AT, en] de-AT: [de_AT, de, en] el: [el_GR, en] el-GR: [el_GR, en] fr: [fr_FR, fr_CA, en] fr-CA: [fr_CA, fr_FR, en] it: [it_IT, en] mi: [mi_NZ, en] mi-NZ: [mi_NZ, en] pt: [pt_BR, pt_PT, en] pt-BR: [pt_BR, pt_PT, en] pt-PT: [pt_PT, pt_BR, en] sl: [sl_SI, en] sl-SI: [sl_SI, en] sv: [sv_SE, en] sv-SE: [sv_SE, en] default: [en] # A list of ISO language codes (e.g., 'en' for English, 'es' # for Spanish, etc.). There is a corresponding file in # generated/locales with the same name containing the translated # text. If it's not selected automatically, users are able to # select their preferred language by using the toggle in the # footer or in the settings modal if they're logged in. locales: - ar - bg - ca_ES - cs - da_DK - de - de_AT - el_GR - en - eo - es - fr_CA - fr_FR - he - hu - it_IT - ja - ko - mi_NZ - nl - pl - pt_BR - pt_PT - ru - sl_SI - sv_SE - tr - uk - vi - zh