Help me set up Zero — a free tool that lets you find and use extra services you don't have built in (image/video generation, search live social media, or hosting a free webpage). …To setup manually, read Installation Guides
Counts byte 3-grams (all distinct 3-byte sequences and their frequencies) in a given text string, with no network calls or LLM involvement.
Looks up SRV records at _turns._tcp.{hostname} for TURNS (Traversal Using Relays around NAT with TLS) service discovery given a registrable domain name.
Validates whether a given IBAN is a mod-97-valid Virtual Account (VA) number of exactly 22 characters in length
Extracts the dc.creator metadata field from a public web page URL or raw HTML content, with SSRF protection.
Validates whether a given string is a valid IPv4 CIDR prefix notation (e.g. 192.168.1.0/24)
Retrieves TLSA (TLS Authentication) DNS records for a given hostname, used for DANE certificate verification.
Retrieves the BIMI (Brand Indicators for Message Identification) TXT record at default._bimi for a given hostname
Converts text into a URL slug using '~' as the word separator, preserving Unicode letters, capped at 160 characters
Validates whether a card number passes the Luhn algorithm and matches Discover card BIN patterns
Resolves _mumble._tcp SRV DNS records for a given hostname to discover Mumble voice chat server connection details
Computes a SHA3-256 cryptographic hash of hex-encoded bytes and returns the digest encoded as base64url.
Extracts img srcset attribute values from a public web page URL or raw HTML in an SSRF-safe manner
Validates whether a given string is a mod-97-valid Turkish IBAN of exactly 26 characters
Computes a SHA-256 hash of raw hex-encoded bytes and returns the digest encoded as base64
Resolves SRV DNS records for LDAPS (_ldaps._tcp) given a registrable domain hostname
Extracts up to 20 HTML tag matches from input text using regex, returning matched tags as a list.
Extracts the HTTP method attribute from HTML form elements via CSS selector parsing, given a URL or raw HTML.
Computes a BLAKE2s-256 hash of raw hex-encoded bytes and returns the result encoded as Base32.
Resolves Kerberos SRV DNS records (_kerberos._tcp.<hostname>) for a given registrable domain
Extracts the article:section metadata field from a public web page or provided HTML, with SSRF protection.
Resolves SRV records at _jabber._tcp.{hostname} for a given registrable domain, returning Jabber/XMPP service discovery data.
Computes an HMAC-RIPEMD160 message authentication code for a given text using a caller-supplied key, returning the result as a lowercase hex string.
Extracts the twitter:card meta tag value from a public web page URL or raw HTML string, with SSRF protection.
Resolves SRV records at _iax._udp.{hostname} for Inter-Asterisk eXchange (IAX) protocol discovery, given a plain registrable domain name.
Validates whether a given string is a mod-97-valid Moldovan (MD) IBAN of exactly 24 characters
Looks up SRV records at _hkps._tcp.{hostname} for HKPS (HTTP Keyserver Protocol Secure) key server discovery
Resolves SRV records at _turn._tcp.{hostname} to retrieve TURN server connection details for a given registrable domain.
Extracts blockquote text from a public web page URL or raw HTML using CSS selectors, with SSRF protection.
Computes a SHA3-384 cryptographic hash of a UTF-16LE encoded text string and returns it as a base64-encoded digest.
Encodes a given text string into its Base64 representation, with no network calls or LLM involvement.
Checks whether an email address would be rejected specifically because its local part contains a plus tag (e.g. user+tag@example.com).
Extracts preload hrefs from link[rel='preload'] elements in a public webpage or raw HTML, returning the list of preloaded resource URLs.
Checks whether a TLS endpoint's port-443 certificate issuer DN equals its subject DN, indicating a self-signed certificate
Percent-encodes (URL-encodes) a text string server-side without network calls or LLM involvement, for $0.005 USDC per call.
Extracts up to 20 IPv4 CIDR block notation matches from a given text string using regex pattern matching.
Encodes a text string into its base36 representation without any network calls or LLM processing
Reverses the order of lines in a given text string, with no network calls or LLM involvement.
Sorts lines of text in ascending (A-Z / 0-9) alphabetical order and returns the result
Computes a SHA-512/224 hash of a UTF-16LE-encoded string and returns the digest encoded as Base32.
Extracts shebang lines (e.g. #!/usr/bin/env python3) from input text using regex, returning up to 20 matches
Extracts semantic version strings (semver tokens) from arbitrary text, returning up to 20 matches per call.
Counts all byte bigram (2-gram) occurrences in the provided text, returning frequency statistics for every consecutive byte pair.
Extracts JWT-shaped tokens (header.payload.signature pattern) from arbitrary text using regex, returning up to 20 matches
Computes a SHA-384 cryptographic hash of text encoded as UTF-16LE bytes and returns the digest encoded as base64url
Computes the SHA-384 cryptographic hash of hex-encoded bytes and returns the digest encoded as base64.
Validates whether a given string is a properly formatted Cisco dotted MAC address (e.g. 1234.5678.9abc)
Computes a SHA-512 hash of text encoded as UTF-16LE bytes and returns the digest as a lowercase hexadecimal string.
Validates whether a given string is a mod-97-compliant Guatemalan (GT) IBAN of exactly 28 characters
Resolves SRV records at _xmpp-client._tcp.{hostname} for XMPP client connection discovery given a registrable domain name.
Removes empty lines from a block of text, returning only non-empty lines
Computes a character-level diff between two input strings, returning the differences between them without any network calls.
Counts the frequency of all byte-level 4-grams (4-byte sequences) in a given text string, without any network calls or LLM involvement.
Computes a SHA3-256 cryptographic hash of hex-encoded input bytes and returns the digest encoded as base64.
Computes a BLAKE2b-512 cryptographic hash of raw hex-encoded bytes and returns the digest encoded as base64url
Removes the last line from a block of text, returning all preceding lines intact
Computes a line-by-line diff of two input strings and returns the differences, running entirely locally without network dependencies.
Extracts ISO 8601 date strings from arbitrary text using regex, returning up to 20 matches
Extracts all HH:MM formatted time strings from input text using regex, returning up to 20 matches.
Extracts all `src` attribute values from `//source` elements in a public webpage or raw HTML using XPath, with SSRF protection.
Extracts up to 20 credit card numbers (13–19 digit card-shaped sequences) from a block of text using regex matching
Computes a SHA-1 hash of the UTF-16LE byte representation of a given text string and returns the result as a lowercase hexadecimal string.
Extracts all MD5 hex digests found in a text string via regex, returning up to 20 matches
Extracts all @-mention strings from text using regex, returning up to 20 matches per call.
Converts an HMS (hours:minutes:seconds) duration string to its equivalent total number of seconds
Computes a SHA-512/256 digest of text encoded as UTF-16LE bytes, then returns the result as a Base32 string
Computes a SHA3-224 hash of the input text encoded as UTF-16LE bytes, returning the digest as a base64 string
Computes a SHA-256 digest of input data provided as a hex-encoded byte string and returns the result as a hex-encoded digest
Converts an RGB color value (provided as text) into its hexadecimal color code representation.
Computes a SHA-512/224 hash of input interpreted as raw hex bytes and returns the digest encoded as a hexadecimal string.
Computes a SHA-512/224 hash of text encoded as UTF-16LE bytes, returning the digest as a base64url string
Computes a SHA-512/224 hash of Latin1-encoded bytes and returns the digest encoded as base64url.
Resolves _pop3._tcp SRV DNS records for a given registrable domain name
Computes a SHA-512/256 cryptographic hash of text encoded as UTF-16LE bytes, returning the digest as a Base64 string.
Returns SRV records at _pop3s._tcp.{hostname} for locating POP3 over TLS mail servers for a given domain.
Extracts footer text from a public web page or raw HTML, scoped specifically to profile footer elements, in an SSRF-safe manner.
Resolves SRV records at _openpgpkey._tcp.{hostname} for OpenPGP key discovery, given a registrable domain name
Computes a SHA3-384 cryptographic hash of text encoded as UTF-16LE bytes, returning the digest as a base64url-encoded string
Computes a SHA-384 cryptographic hash of the UTF-16LE byte representation of input text and returns it as a lowercase hex string
Extracts anchor link titles (a[title] attribute values) from a public webpage URL or raw HTML, with SSRF protection.
Computes a SHA-384 cryptographic digest of raw hex-encoded bytes and returns the result encoded as a base64url string
Computes a SHA3-384 cryptographic hash of raw hex-encoded bytes and returns the result encoded as base64url
Computes a SHA3-384 cryptographic hash of Latin1-encoded input bytes and returns the digest encoded as base64url.
Validates whether a given IBAN is a mod-97-valid Swiss (SC) IBAN of exactly 31 characters
Extracts aside text elements from a public webpage or raw HTML using CSS selectors, with SSRF protection.
Computes a SHA3-384 cryptographic hash of raw hex-encoded bytes and returns the digest encoded as base64.
Extracts data attribute values (e.g. data-* attributes) from HTML elements matching the CSS selector data[value], from a given URL or raw HTML string.
Computes a SHA3-384 cryptographic digest of input text encoded as UTF-16LE bytes, then returns the result encoded as Base32.
Computes a SHA3-256 hash of UTF-16LE encoded text and returns the result as a Base32 string
Computes a SHA-512 cryptographic hash of Latin1-encoded bytes from input text and returns the digest encoded as a Base64URL string.
Extracts figcaption text from HTML figure elements on a given public web page or raw HTML input
Validates whether a given string is any absolute URL (any scheme), returning a boolean result without making any network request
Computes a SHA-256 hash of input text encoded as UTF-16LE bytes and returns it as a lowercase hex string
Extracts footer text from a public webpage or raw HTML, with SSRF protection, for $0.006 USDC per call.
Converts arbitrary text into a dot-separated slug capped at 120 characters while preserving Unicode letters
Validates whether a given string is a valid semantic version (semver) optionally prefixed with a leading 'v'
Computes the SHA-256 hash of raw bytes provided as a hex string, then encodes the result as Base32
Checks whether a host's port-443 TLS certificate will remain valid for at least 90 days and returns an ok_check boolean result
Resolves SRV records at _sieve._tcp.{hostname} for the ManageSieve protocol, given a registrable domain name
Computes a SHA-384 cryptographic hash of the Latin-1 (ISO-8859-1) byte encoding of input text, returning the digest as a Base64-encoded string.
Validates whether a given string is a properly formatted dash-separated MAC address (e.g. AA-BB-CC-DD-EE-FF)