Heading Tag Extractor — H1-H6 Structure
Extract and visualize the heading tag hierarchy (H1–H6) from HTML with SEO checks for structure.
How it works
- 1Paste or type your text in the input field
- 2Click "Extract Headings" — processing happens in your browser
- 3Copy the result or download as a text file
What to do next
About Heading Tag Extractor
Heading Tag Extractor is a single-page tool for the common web and productivity utility task it is named after. Extract and visualize the heading tag hierarchy (H1–H6) from HTML with SEO checks for structure. The interface keeps the input on one side, the configurable options in the middle, and the result on the other side. Most jobs start and finish without any scrolling.
Behind the controls you see, standard browser APIs is doing the actual web and productivity utility. Formats are detected on load and the engine produces a deterministic output for any given input + options combination — useful when you need to re-run a job and expect identical results.
The execution path is auditable from the page itself: open developer tools, switch to the Network tab, run a job. The requests you see are static-asset GETs for the engine and the page resources. The actual work is JavaScript code running against the bytes already in your tab's memory.
If you fit any of these descriptions, Heading Tag Extractor should slot cleanly into your workflow: analysts pulling lightweight reports; site owners auditing pages; researchers gathering quick references. The tool keeps the controls focused on what matters for each of these use cases.
Heading Tag Extractor works well as a bookmarked utility you reach for when you need it. The first visit shows you what the tool does; the second is when you realise it is a low-friction option for the task and worth keeping in your tab list.
The architecture imposes only the limits the browser itself imposes. The published 0 MB ceiling is conservative; most modern devices comfortably handle inputs up to that size, and the cap exists so the tool degrades gracefully on phones and budget laptops rather than running out of memory.
Heading Tag Extractor sits in a small group of related tools. Useful neighbours include Meta Tag Analyzer, Page Title Length Checker, Readability Score (SEO), and SEO Checklist Generator. They are designed to compose: the output of one is a sensible input to the next, so a multi-step task is usually a sequence of single-click operations.
The transformation in Heading Tag Extractor is deterministic — the same input plus the same options produces the same result every run. That predictability matters when the result has to match an upstream specification or be reproducible later.
Heading Tag Extractor returns the result as a download. If you are running multiple jobs, the output names will not collide as long as the input names differ. You can re-run with different settings as many times as you like; each run produces a fresh file with no caching trickery in between.
Some context on why Heading Tag Extractor exists in this form: modern File APIs, high-performance JavaScript engines, and well-maintained open-source libraries now make it possible to perform web and productivity utility work entirely in the browser. Heading Tag Extractor is built on top of that capability, which is why a single page can host the full pipeline.
Heading Tag Extractor produces deterministic output: the same input plus the same options always produces the same result. That predictability matters when the result has to match an upstream specification or be reproducible later.
A few practical tips that experienced users of Heading Tag Extractor pick up over time. First, keep your default browser updated — the engine relies on standard web APIs and newer browser versions are noticeably faster than ones from a few years ago. Second, close other heavy tabs before processing a large input; the engine shares CPU and memory with whatever else is open. Third, if you re-run the same kind of job often, your last-used settings are remembered for the rest of the tab session, so subsequent runs are essentially one click.
If Heading Tag Extractor appears to hang, the engine is almost certainly still working — large inputs simply take longer to process inside a browser than they would on a server with multi-core scheduling. For inputs near the 0 MB cap, give it up to a minute on a typical laptop before assuming something is stuck.
Open the workspace above to start using Heading Tag Extractor. The engine loads on the first interaction so the page itself stays light, and once the tool is warm it processes subsequent jobs quickly. The moment the page is interactive, the tool is ready to do real work on your file.
How it works
- 1Reach the Heading Tag Extractor page in your browser to begin.
- 2Add your web utility input by dropping it onto the page or browsing for it.
- 3Pick any non-default settings you need. Most users leave the defaults alone for the first run and only revisit if the result needs tuning.
- 4Hit the run button. standard browser APIs does the work in your browser tab.
- 5Save the output when it is ready.
- 6Re-run with different settings as often as you want. Each run produces a fresh output and the original file on disk is never modified.
Common use cases
- Plan content without paying for a SaaS dashboard using Heading Tag Extractor.
- Sanity-check a webhook response while debugging.
- Create a placeholder image for a wireframe.
- Validate a setting before circulating it to a team.
- Generate a temporary asset for a social post.
- Run a one-off check during a meeting without context-switching.
- Compare two product variations side by side.
- Pull a quick reference number for a status update.
FAQ
Why check headings?
Proper heading hierarchy helps search engines understand content structure and improves accessibility.
H1 rule?
Each page should have exactly one H1 tag. Multiple H1s dilute the primary heading signal.
Skipped levels?
Going from H2 to H4 (skipping H3) is flagged as a structural issue.
Private?
Yes — runs locally.
Nested content?
HTML tags inside headings (links, spans) are stripped — only text content is shown.
SEO impact?
Well-structured headings improve crawlability, accessibility, and can influence featured snippets.
What is the maximum file size for Heading Tag Extractor?
Inputs are capped at 0 MB per file, which keeps memory usage stable across phones, tablets and older laptops. You can run Heading Tag Extractor as often as you need; every run produces a full-quality result.
Can I use Heading Tag Extractor offline?
Once the page is loaded, Heading Tag Extractor can complete jobs without an active internet connection — the engine is bundled with the page, so there is no per-job network call. The initial page load does require a connection (to fetch the static assets), but after that you can disconnect entirely and the tool will still work. This is a side-effect of the local-first architecture, not a deliberate "offline mode" feature.
What does the error message in Heading Tag Extractor mean?
Failures usually fall into one of three buckets: the input is in an unsupported format, the input is over the size cap, or the input is structurally malformed (a truncated download, a partial export, or a stream the engine does not recognise). The first two are easy to confirm — check that your file is in a supported format and that it is below 0 MB. For the third, opening the file in its native viewer first is the fastest way to confirm the source is intact.
How is Heading Tag Extractor different from desktop apps that do the same thing?
Desktop apps usually have more advanced features but require installation, maintenance and (often) a licence. Paid online tools are convenient but route your file through their servers and gate downloads behind accounts. Heading Tag Extractor sits in between: free, instant, and private, but intentionally narrow in scope. For one-off jobs and the common web and productivity utility operations, it is usually the lowest-friction choice; for highly specialised work, a dedicated app is still the right answer.
Will Heading Tag Extractor keep working in a year?
Heading Tag Extractor is updated whenever the underlying engine releases an improvement or a bug fix. Because the tool is delivered as a static page, every visit fetches the latest version automatically — there is no "version" to manage on your end. If a particular release ever changes default behaviour, the change is documented on Favtoo's changelog so you can confirm what shifted.
Can I process multiple files at once with Heading Tag Extractor?
Heading Tag Extractor processes one input at a time by design — it keeps memory usage predictable on lower-end devices and makes results easier to verify. To handle a folder, run the tool once per file; the page stays loaded between runs and remembers your last-used settings, so the second run is essentially instant.
Do I need a specific browser to use Heading Tag Extractor?
Heading Tag Extractor works in any modern browser released in the last few years — Chrome, Edge, Firefox, Safari, Brave, Arc and the major Chromium derivatives are all supported. The underlying engine relies on widely-supported web APIs, so there is nothing exotic to install. If you are on a very old browser version and the tool fails to load, updating to the latest release of your preferred browser is the only fix needed.
Is Heading Tag Extractor licensed for business use?
Heading Tag Extractor can be used for personal and commercial work alike — there is no separate "business" licence to purchase. The output you generate is yours to use however you want, including in client deliverables, internal documents, or commercial products. Favtoo's only ask is fair, individual use; the tool is not designed to be embedded as a backend service or wrapped behind an API for resale.