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
Extracts hreflang attribute values from all <link> elements on a public webpage or raw HTML string using an XPath selector.
Computes a SHA-1 hash of a Latin-1 encoded text string and returns it as a Base64-encoded digest
Validates whether a given IBAN is a mod-97-valid Costa Rican (CR) IBAN of exactly 22 characters
Computes a SHA-1 hash of raw hex-encoded bytes and returns the digest encoded as base64.
Extracts JSON-LD @type Event structured data from a public webpage URL or raw HTML, returning the parsed event schema markup.
Computes a SHA-1 digest of latin1-encoded bytes from input text and returns it encoded as base64url.
Checks whether any Subject Alternative Name (SAN) on port 443 of a given host or URL is a wildcard DNS name
Resolves _matrix._tcp SRV DNS records for a given hostname to support Matrix federation discovery
Extracts the meta author tag value from a public webpage or raw HTML document, SSRF-safe.
Computes a SHA-1 hash of Latin-1 encoded bytes and returns the result as a lowercase hexadecimal string
Checks whether the TLS certificate SAN or CN for a given URL's port-443 connection matches the requested hostname
Validates the checksum of a Spanish VAT (NIF/CIF) number without performing a live registry lookup
Looks up the DKIM TXT record at the s1._domainkey selector for a given hostname via DNS
Redacts (masks) all email addresses found in a given text string, returning the sanitized text without storing any data.
Computes the SHA-256 hash of a text string treated as Latin1-encoded bytes and returns the digest encoded in Base32 format.
Extracts the meta robots directive from a public webpage or raw HTML content in an SSRF-safe manner
Extracts blank-target anchor hrefs (a[target='_blank']) from a public webpage URL or raw HTML, with SSRF protection.
Extracts definition term (dt) text from a public URL or raw HTML using CSS selection, with SSRF protection
Computes an HMAC-SHA384 signature of input text using a caller-supplied key and returns it encoded as Base64.
Extracts up to 20 EAN-13 barcode digit strings from a provided text input using regex matching.
Extracts definition description (dd) elements from a public web page or raw HTML using CSS selectors, with SSRF protection.
Decodes ASCII85-encoded text into its original plaintext representation, with no network calls or LLM involvement.
Resolves SRV records at _sips._tcp.{hostname} for SIP over TLS by accepting a registrable domain name
Computes a SHA-256 hash of a string encoded as UTF-16LE bytes, then returns the digest encoded as Base32
Retrieves SOA (Start of Authority) DNS record fields for a given hostname, including ns, hostmaster, serial, refresh, retry, expire, and minimum values.
Returns the NS (name server) hostnames for a given public domain name via DNS lookup
Extracts the theme-color meta tag value from a public web page URL or raw HTML, with SSRF protection.
Decodes a base64url-encoded string into its original plaintext, with no network calls or LLM involvement.
Extracts the Open Graph image URL (og:image meta property) from a public webpage or raw HTML using XPath, with SSRF protection.
Rewrites a JSON string using the JCS (RFC 8785) canonicalization transform, producing a deterministically ordered, whitespace-normalized JSON output.
Computes a SHA-256 hash of a Latin1-encoded string and returns the digest encoded as Base64.
Computes a SHA-256 hash of a Latin-1 encoded string and returns the digest encoded as base64url.
Validates whether a given string is a mod-97-valid IBAN of the Maltese (MT) format with a length of 31 characters
Computes an HMAC-RIPEMD160 digest of input text using a caller-supplied key and returns it as a base64-encoded string.
Computes a SHA-512 cryptographic hash of text encoded as UTF-16LE bytes, returning the digest as a base64url string
Normalizes line endings in text to LF (Unix-style) with a final newline, with no network or LLM involved.
Retrieves SPF and DMARC DNS policy records for a given public hostname without sending any email
Computes a SHA-256 hash of the UTF-16LE byte encoding of a given text string, returning the digest encoded as a base64url string.
Validates whether a Croatian (HR) VAT number passes the checksum algorithm, without performing a live registry lookup.
Computes a SHA-256 hash of Latin-1 encoded bytes from input text and returns the digest as a lowercase hex string.
Rewrites input text using capitalize case (title-like capitalization of words) with no network or LLM dependency
Validates an Italian VAT number (Partita IVA) by verifying its checksum algorithm, without performing a live registry lookup.
Computes a SHA3-224 cryptographic hash of Latin-1 encoded text and returns the digest encoded as a Base32 string.
Counts the frequency of every individual character (1-gram) in a given text string, returning exact character-level occurrence counts.
Counts all character-level 3-grams (trigrams) in the provided text and returns their frequencies
Extracts anchor href values from navigation elements inside a public webpage or raw HTML input, returning links found in the page's nav sections.
Encodes text by converting special characters to their HTML named entity equivalents (e.g. & → &, < → <)
Fetches a public web page by URL or accepts raw HTML and returns an XPath-extracted text summary of its content, with SSRF protection.
Validates whether a phone number conforms to North American Numbering Plan (NANP) +1 rules
Computes an HMAC-SHA3-384 message authentication code for a given text and key, returning the result encoded as base64
Counts all word bigrams (2-grams) in a given text and returns their frequencies, with no network or LLM dependencies.
Extracts all SHA-256 hex digests found in a text string, returning up to 20 matches
Encodes input text using HTML numeric character encoding (&#NNN; notation) without any network calls or LLM processing.
Validates whether a given string is a mod-97-compliant Latvian IBAN (LV country code, exactly 21 characters long)
Computes a SHA3-224 cryptographic hash of Latin1-encoded text and returns the digest encoded as Base64.
Validates whether a Polish VAT (NIP) number has a correct checksum, without performing any registry or database lookup.
Extracts input type attribute values from HTML form elements on a public webpage or raw HTML, with SSRF protection.
Extracts all anchor tag rel attribute values from a public URL or raw HTML string, with SSRF protection.
Extracts caret (^) and tilde (~) semantic versioning range expressions from arbitrary text, returning up to 20 matches.
Extracts the og:audio Open Graph meta tag value from a public web page URL or raw HTML string, in an SSRF-safe manner.
Parses raw iCalendar text and extracts structured VEVENT items from it
Extracts HTML form input field names from a public webpage or raw HTML content, with SSRF protection.
Computes a SHAKE128 (extendable-output function) digest of input text and returns the result encoded as a hexadecimal string.
Normalizes curly/smart quotes in text to straight ASCII quotes, running entirely locally with no network or LLM calls.
Converts arbitrary text into a URL-friendly slug using hyphens as separators, ASCII-folded and capped at 80 characters.
Extracts all paragraph and body text (q-text) from a public web page URL or raw HTML, SSRF-safe, for $0.008 USDC per call.
Extracts all ORCID iDs from a text string using regex, returning up to 20 matches
Validates whether a given string is a properly formatted UUID version 7 identifier
Validates whether a phone number string conforms to the E.164 international format standard (no carrier lookup)
Computes a SHAKE-128 (XOF) hash of input text and returns the digest encoded as a base64url string.
Computes a SHA3-256 cryptographic hash of input text and returns it encoded as a Base32 string, with no network calls or LLM involvement.
Computes a SHAKE-128 (XOF) cryptographic digest of input text and returns the result encoded as base64.
Computes a SHA3-224 cryptographic hash of input text and returns the result encoded as a hexadecimal string.
Extracts link[rel=manifest] href values from a public webpage URL or raw HTML in an SSRF-safe manner
Computes a SHA-512/256 cryptographic digest of a latin1-encoded text string and returns it encoded as base64url.
Extracts the og:image URL from the Open Graph meta tag of a public web page or raw HTML string, with SSRF protection.
Validates whether a given string is a mod-97-valid Greek (GR) IBAN of exactly 27 characters
Converts input text to kebab-case format (lowercase words joined by hyphens) without using a network or LLM.
Validates whether a given IBAN is a mod-97-valid Liechtenstein (LI) IBAN of exactly 21 characters
Resolves SRV records at _mqtt._tcp.{hostname} for a given registrable domain, returning MQTT broker connection details.
Computes an HMAC-SHA3-384 message authentication code of input text using a caller-supplied key, returning the result encoded as base64url.
Resolves _matrix-fed._tcp.{hostname} SRV DNS records for Matrix federation server discovery, given a registrable domain name.
Converts a JSON array of objects into CSV format, with optional custom delimiter support.
Computes an HMAC-SHA3-256 message authentication code for a given text and key, returning the result as a lowercase hex string.
Extracts the CSS video[poster] attribute value from a public webpage or raw HTML (SSRF-safe)
Validates whether a given string is a mod-97-compliant Croatian (HR) IBAN of exactly 21 characters.
Converts a JSON object or array to formatted Markdown, rendering arrays of objects as Markdown tables
Computes an HMAC using SHA3-384 with a caller-supplied key over input text and returns the result as a lowercase hex string
Validates whether a given string is a mod-97-compliant Faroese IBAN of exactly 18 characters.
Resolves SRV DNS records at _ldap._tcp.{hostname} for a given registrable domain name
Extracts structured JSON-LD @type Recipe data from a public webpage URL or raw HTML content
Detects the CSV dialect (delimiter, quoting, line endings) plus column count and row count from raw CSV text
Extracts JSON-LD @type Review structured data from a public URL or raw HTML, returning machine-readable review schema objects.
Validates whether a given string is a mod-97-valid Dominican Republic IBAN of exactly 28 characters
Computes a BLAKE2b-512 cryptographic hash of Latin-1 encoded text and returns the digest encoded as Base32.
Computes a BLAKE2b-512 cryptographic hash of UTF-16LE-encoded text and returns the digest encoded as Base32
Computes an HMAC-SHA224 digest of input text using a caller-supplied key and returns it encoded as base64url.
Computes a BLAKE2b-512 cryptographic hash of raw bytes supplied as a hex-encoded string, returning the digest encoded as standard Base64.
Validates whether a given IBAN string is a mod-97-valid Danish (DK) IBAN of exactly 18 characters
Validates whether a given IBAN string is a mod-97-valid Cyprus (CY) IBAN of length 28