01
Normalized locale codes
Apply lowercase language, title-case script, and uppercase region formatting consistently.
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DecoderEncode DecodeDecode one X.509 PEM certificate and inspect subject, issuer, validity, SAN entries, fingerprints, serial number, signature, and key usage.→Character CounterTextMeasure characters with and without spaces, plus words and lines, for social posts, forms, metadata, and editing→Checksum CalculatorEncode DecodeCalculate CRC32, MD5, SHA-1, SHA-256, SHA-384, or SHA-512 checksums from exact text and compare deterministic outputs across systems.→Collapse SpacesTextCollapse repeated horizontal spaces into one space while preserving line breaks, paragraph structure, and the order of your text.→Comma List to LinesTextConvert comma-separated values into one trimmed item per line, omit empty entries, and prepare a clean vertical list for spreadsheets or imports.→Content-Type ParserDeveloperParse a Content-Type header into its media type, charset, boundary, and other parameters.→Cookie ParserDeveloperParse a Cookie request header into readable cookie names and values.→Cron 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security headers for a public URL.→HTTP Request BuilderGeneratorBuild a complete HTTP request and matching cURL command from structured fields.→HTTP Status CheckerNetworkCheck the live HTTP status of a public URL, follow redirects, and review the final response and request path.→HTTP Status Code LookupNetworkLook up common HTTP response codes and use detailed guides for 301, 302, 401, 403, 404, 429, 500, 502, and 503 errors.→Hash GeneratorGeneratorUse this free Hash Generator to create MD5, SHA-1, SHA-256, and SHA-512 hashes from text, verify exact input, and copy results online.→Hashtag ExtractorTextExtract unique hashtags from captions, notes, and campaign text in their original first-seen order.→Hreflang GeneratorSeoGenerate a reciprocal hreflang cluster as HTML link tags and a complete same-site XML sitemap, with normalized locales and optional x-default.→IP Address LookupNetworkInspect a public IPv4 or IPv6 address, reverse hostname, address version, canonical form, and 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character variety, repetition, sequences, and common-pattern signals while keeping the result easy to understand.→Phone Number ExtractorTextExtract likely phone numbers from mixed text while preserving their original appearance and order.→Ping TestNetworkSend ICMP echo requests to a public hostname or IP address and review packet loss and round-trip timing.→Port CheckerNetworkTest whether a TCP port on a public hostname or IP address accepts a connection and review connection timing and resolved destination.→Prefix LinesTextAdd the same prefix to every following line while preserving line order and line breaks.→Product Schema GeneratorSeoGenerate Product and Offer JSON-LD for visible product details.→Query String ParserNetworkParse a complete URL or raw query string into structured, readable JSON without changing the original input.→Quote LinesTextWrap every source line in quotation marks while preserving line order and line breaks.→RSA Key GeneratorGeneratorGenerate RSA public and private key pairs in PEM format with selectable key sizes and optional passphrase protection.→Random Password GeneratorGeneratorGenerate strong random passwords with a chosen length for accounts, test data, temporary credentials, and security-focused workflows.→Reading Time CalculatorCalculatorEstimate how long a text takes to read from its word count using a clear words-per-minute model.→Redirect Chain CheckerSeoTrace HTTP redirects, inspect status codes, detect loops, and identify unnecessary redirect hops.→Regex BuilderGeneratorBuild practical regular expressions from common matching requirements.→Regex ExtractorDeveloperExtract all regex matches and capture groups from text.→Regex Match HighlighterDeveloperHighlight every regex match directly inside source text so patterns can be reviewed visually before they are reused.→Regex ReplaceDeveloperReplace regex matches with text or capture-group references.→Regex SplitterDeveloperSplit text with a regular expression and return clean copyable segments without manually editing repeated delimiters.→Regex Tester PRODeveloperTest regular expressions with detailed matches, named groups, offsets, line and column positions, execution timing, and highlighted previews.→Remove All SpacesTextRemove every whitespace character, including spaces, tabs, and line breaks, to create one uninterrupted string.→Remove Duplicate LinesTextKeep the first occurrence of each exact line, remove later duplicates, and preserve the original line order.→Remove Duplicate WordsTextRemove repeated words case-insensitively while keeping each first spelling and the original first-seen order.→Remove Empty LinesTextDelete blank and whitespace-only lines while preserving every populated line in its original order.→Remove Line NumbersTextRemove leading line numbers from text while preserving the remaining line content and order.→Remove NumbersTextRemove numeric digits from text while keeping letters, punctuation, spacing, and line order available for 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SEO
Ready
Hreflang Generator
Generate a reciprocal hreflang cluster as HTML link tags and a complete same-site XML sitemap, with normalized locales and optional x-default.
Validate ISO 639-1 language syntax Normalize language, script, and region casing Require fully qualified HTTP or HTTPS URLs Reject duplicate locales and duplicate localized URLs
Deploy the same complete cluster on every equivalent page. Each page must include itself and all other localized versions.
Private browser processing. Your input is processed on this device and is not sent to the Trexmi server.
INPUT Localized pages *
LocaleLocalized page URL
x-default
Use locales such as en-US, de-DE, fr-CA, or zh-Hant. Each URL must be absolute and unique.
Generated hreflang cluster
Copy-ready HTML tags plus a complete reciprocal XML sitemap cluster.
Locales0
x-defaultNot set
About the tool
What Hreflang Generator does
Hreflang Generator converts locale and URL pairs into a reciprocal cluster of rel="alternate" hreflang tags. It also produces a complete XML sitemap block in which every localized URL contains the same alternate set. An optional x-default URL can provide a fallback for unmatched languages or regions.
Each URL must be fully qualified and each localized page should list itself plus every other equivalent version. The generator normalizes casing such as en-us to en-US and zh-hant-tw to zh-Hant-TW. It checks structure and duplicates but cannot verify page content, indexability, response codes, reciprocal deployment, or whether a search engine supports every supplied locale.
How to use
- Add localized pages. Enter one row as
locale | absolute URL. - Check targeting. Use a two-letter language code and add script or region only when the content actually targets it.
- Add x-default. Point it to a useful neutral fallback, global version, or language selector when appropriate.
- Generate the cluster. Copy the full HTML set to every listed page or use the complete XML sitemap output.
- Verify deployment. Confirm self-references, return links, canonical alignment, successful responses, and indexability.
Built for the task
Why use Hreflang Generator?
Focused controls, predictable output, and a workflow designed around this exact transformation.
02
Complete reciprocal XML
Generate one sitemap URL element for every localized and distinct fallback URL.
03
Duplicate protection
Reject repeated locale codes and assigning one localized URL to several locale rows.
04
Two deployment formats
Receive HTML head tags and a namespaced XML sitemap cluster from the same source.
Useful answers
Questions about Hreflang Generator
Practical details about input, output, privacy, limits, and the best way to use this tool.
01 Does every localized page need a self-reference?
Yes. Each language version should list itself and all other versions in the same equivalent-content cluster.
02 Do hreflang links need return links?
Yes. If one version points to another, the other version should point back. Missing return links can cause annotations to be ignored.
03 What does x-default mean?
It identifies a fallback URL for users whose language or region is not represented, often a global page or language selector.
04 Can I use a relative URL?
No. Alternate URLs must be fully qualified, including the http or https scheme.
05 Should I use only a country code?
No. Hreflang starts with a language code. A script and region may follow, but a country by itself is not a language target.
06 Can hreflang replace canonical tags?
No. Each indexable localized page normally uses an appropriate self-referencing canonical, while hreflang connects equivalent canonical pages across languages or regions.
07 Does the generated XML cover every localized URL?
Yes. The output contains a complete urlset and repeats the full alternate cluster under each localized URL and distinct x-default URL. For a cross-domain cluster, move each URL element into the sitemap owned by its loc host; the generator adds a warning instead of presenting the combined draft as deployable.
08 Does generation prove Google accepts the cluster?
No. Pages must be crawlable, indexable, equivalent, reciprocal, canonicalized correctly, and return successful responses after deployment.
Examples
Generate a three-language cluster
Alphabetical sorting creates a stable tag order without changing locale meaning.
Input
en-US | https://example.com/en-us/product/ uk-UA | https://example.com/uk-ua/product/ pl-PL | https://example.com/pl-pl/product/
Output
\n\n
Normalize language, script, and region casing
Casing is normalized after the locale structure and language code are validated.
Input
zh-hant-tw | https://example.com/zh-hant-tw/ sr-latn-rs | https://example.com/sr-latn-rs/
Output
zh-Hant-TW\nsr-Latn-RS
Reject an incomplete cluster row
Google requires fully qualified alternate URLs, not root-relative paths.
Input
en-US | /en-us/product/
Output
Error: URL in row 1 must be an absolute HTTP or HTTPS URL.
Self-references and return links
A cluster contains pages that are genuine language or regional alternatives of the same content. Every version should list itself and every other version. If page A links to page B but page B does not link back, the relationship is incomplete.
Deploy one consistent set across the cluster. Do not add unrelated pages merely because they share a category or template.
Language, script, and region codes
Start with a supported two-letter language code such as en, uk, or pl. Add a four-letter script when it matters, as in zh-Hant, and add a two-letter or numeric region after the language or script, as in en-US or zh-Hant-TW.
The generator verifies an ISO 639-1 language code and the structural placement of optional script and region subtags. It does not prove that a particular language-region combination is sensible or supported by every search engine.
HTML head tags and XML sitemap clusters
The HTML output is the complete set of link elements to place in every localized page head. For URLs on one host, the XML output is a complete namespaced urlset. Each URL element repeats all alternates, including x-default when supplied, so the sitemap implementation is reciprocal rather than a one-page fragment.
Cross-domain hreflang is allowed, but each sitemap can contain only URLs owned by its site. For a multi-host cluster, split the generated URL elements across the appropriate host sitemaps while retaining the complete alternate set. Choose one correctly maintained implementation method; conflicting HTML, HTTP header, and sitemap clusters can drift.
Common hreflang failures
Frequent problems include relative URLs, redirects, 404 responses, blocked or noindex alternatives, missing self-references, missing return links, canonical URLs pointing to another language, and locale tags that do not reflect the visible page language. Generation cannot test those live conditions.
Check each preferred URL with Canonical URL Checker, validate deployed XML with Sitemap Validator, and inspect confusing URL components with URL Parser.
Official hreflang references
Review Google Search documentation for localized versions and the HTML alternate link definition.