Nearby tools from the catalog that fit the same job or workflow.
Check canonical tags
Check canonical tags from pasted HTML or head markup locally.
Check robots.txt blocks
Validate pasted robots.txt rules, blocks, and sitemap lines locally.
Inspect sitemap XML
Inspect pasted sitemap XML locally and flag missing or duplicate loc entries.
Generate SEO meta tags
Generate SEO meta tags including title, description, Open Graph, and Twitter cards. Free, in your browser, nothing is uploaded.
Check practical HTML issues
Run a practical HTML checker on pasted markup and surface common SEO/content issues locally.
Preview meta tags
Preview title, description, canonical, robots, and social meta fields from pasted HTML.
Everyone can see the current score. Signed-in users can leave a 1 to 5 star rating, and any written review goes only to review@cleanor.app.
No ratings yet. Be the first to leave one.
Sign in to leave a public score from 1 to 5 stars. Optional written feedback is private and emailed only to review@cleanor.app.
This block mirrors the system review flow: score first, then an optional private note.
A quick way to understand who this helps, what it solves, and where it connects next.
International SEO teams, developers, and publishers reviewing multi-language metadata before shipping.
Practical hreflang QA without a remote crawler or rendering simulation.
Capture hreflang-tag-checker intent with a narrow markup-first inspection page.
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
To check your hreflang tags, copy the page HTML or just the head markup and paste it into the checker. It extracts every link rel=alternate hreflang entry, lays out the language-and-region mapping in one view, and flags the issues that commonly break international targeting.
The checker runs entirely in your browser, so the markup you paste is never sent to a server. That makes it safe for staging pages and unpublished templates, and it works instantly without an account.
Hreflang mistakes are easy to make and hard to spot by eye. This checker surfaces duplicate hreflang codes pointing at different URLs, values that do not look like valid language or region codes, and the absence of an x-default entry when multiple alternates exist, which is one of the most common oversights.
It is deliberately a heuristic, paste-based tool rather than a full site crawler. It checks the markup you give it and flags obvious issues clearly, without pretending to validate return tags across an entire live site. That keeps it fast and honest for a pre-launch review.
Short answers for the questions people usually have before trying a utility like this.
Yes. This hreflang tag checker is free to use with no sign-up, and you can check as many pages as you like.
No. The HTML or head markup you paste is parsed entirely in your browser, so it stays private and is never uploaded.
No. This checker validates only the markup you paste. It does not crawl or fetch the alternate URLs to verify their return tags.
Yes. When multiple alternate entries are present, the checker surfaces a missing x-default as a practical note so you can add one.
Yes. Because everything runs in your browser and nothing is uploaded, you can safely paste markup from staging or draft pages.
Every tool on Cleanor is free with no sign-up, no credits, and no limits. Files are processed privately in your browser. Looking for on-device phone cleanup and Premium features? That lives in the Cleanor app.
Paste HTML or head markup, inspect alternate hreflang links, and flag duplicate, invalid-looking, or missing fallback entries.