Hreflang Generator for SEO Agencies
Generate and validate hreflang tags for all your clients' multilingual sites. One tool for every client, every language, every market.
Your client just landed their first enterprise retainer -- a European retailer with sites in eight languages, three regional variants, and a CMS that nobody on their team fully understands. The kick-off call goes well. Then you look at their hreflang.
Missing return links on half the site. Invalid region codes. Self-references pointing to the wrong domain. Canonical conflicts on the German pages. It's the kind of implementation that looks fine on the surface until you dig in and realize it's been silently broken for two years.
That's the job. Except now multiply it by fifteen clients.
The agency hreflang problem
Hreflang is one of those areas where the gap between "looks fine" and "actually works" is wide and invisible. Google doesn't throw an error. Rankings don't tank dramatically overnight. The signs are subtle -- traffic plateaus in certain markets, wrong-language pages appearing in foreign SERPs, conversion rates underperforming in regions the client swears they're targeting.
As an agency, you're managing this across a portfolio of clients, each with different CMSs, different URL structures, different language combinations, and different ideas about what "translated" means. The problem isn't that any one client's hreflang is hard to fix. It's that doing it right, repeatedly, at scale, without a dedicated tool is a mess.
Manual generation means spreadsheets, copy-paste, and template errors that propagate silently. Manual validation means running each URL through a tool one at a time, hoping you caught everything. And when a client migrates their site or adds a new language variant, you start over.
What agencies need from an hreflang tool
Generate tags for any URL structure
Whether your client uses subdirectories (/fr/), subdomains (fr.example.com), or separate domains (example.fr), the generator handles all three patterns. Paste in the URLs, map the languages, get the tags.
Validate existing implementations
Before you propose a fix, you need to know what's actually broken. The validator checks for missing return links, invalid language codes, self-referencing errors, canonical conflicts, and non-200 target URLs -- the full list.
Catch errors before they go live
Generate the tags, validate the output, then hand off clean markup to the dev team. You're not guessing -- you're delivering verified hreflang that you know is correct.
Works across any CMS
The output is plain HTML markup that drops into any CMS, template, or static site. No plugin dependency. No integration requirement. Just the tags.
Language code validation built in
The tool enforces ISO 639-1 language codes and ISO 3166-1 region codes. No more en-UK instead of en-GB. No more zh_TW with an underscore. The codes are validated on output.
One tool for every client's hreflang
Generate and validate hreflang tags across your entire client portfolio. Free.
How agencies use it
The workflow fits naturally into an international SEO audit or implementation project.
Audit the existing implementation
Start by running the client's key pages through the validator. You'll get a clear picture of what's broken -- missing return links, bad language codes, canonical conflicts -- before you touch anything. This becomes the basis for your audit deliverable.
Map the language variants
Document which URLs correspond to which language/region combinations. For most clients this already lives somewhere -- in the CMS, in a spreadsheet, in the sitemap. You're just organizing it into the format the generator needs.
Generate the tag sets
Input the URL mapping and generate the complete hreflang tag sets for every page in every language. The output includes the self-referencing tags and the full set of alternate links -- everything Google requires.
Validate the output
Run the generated tags through the validator before handing them off. This is your QA step. Any error in the generated set surfaces here, not after implementation.
Hand off to the dev team
Deliver the validated markup with clear implementation notes. The tags are plain HTML -- they go in the <head> of each page, or into the XML sitemap if that's the agreed implementation method.
Approaches compared
| Approach | Time per client | Accuracy | Scalable? |
|---|---|---|---|
| Manual generation (spreadsheet) | Hours | Error-prone | No |
| Screaming Frog crawl | Medium | Validation only, no generation | Partial |
| Platform-specific plugins | Varies | Plugin-dependent | No |
| Hreflang Generator | Minutes | Validated output | Yes |
The comparison isn't really about speed -- it's about reliability. When you're responsible for a client's international search visibility, "error-prone" isn't acceptable. A tool that generates and validates in the same flow is a different category from a tool that only does one or the other.
Free
$0
- Up to 3 items
- Email alerts
- Basic support
Pro
$9/month
- Unlimited items
- Email + Slack alerts
- Priority support
- API access
Getting started
Open the generator
No account required to start. Open Hreflang Generator and you're ready to build your first tag set.
Add your client's URLs and language mapping
Enter the page URLs and map each one to its language/region code. The tool walks you through the structure.
Generate and validate
Get the complete tag sets, then run validation to confirm the output is correct before you hand it over.
Deliver and document
Include the validated hreflang markup in your deliverable, along with notes for the dev team on where to place the tags.
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Generate perfect hreflang tags
Create and validate hreflang markup for your multilingual site. Free.