Free web tools

Useful Toolkit

Free tools for website migrations, metadata, multilingual pages and public documentation. A separate invoice helper creates SEPA payment QR codes. No account required.

Redirect Lists llms.txt AI robots.txt Hreflang PWA Manifest SEPA QR Open Graph Schema Markup

Available now

Live tools

Migration ToolsRedirect List Checker

Find duplicate sources, redirect loops and chains in a CSV mapping. Export reviewed exact-path rules for WordPress Redirection.

Documentation Toolsllms.txt Generator

Create a curated list of public documentation links in the proposed llms.txt format.

AI SEOAI-Crawler robots.txt Generator

Create robots.txt rules for known AI crawlers such as GPTBot, Google-Extended, and CCBot.

SEO ToolsHreflang Generator

Generate hreflang tags for multilingual and multi-regional SEO in HTML, XML sitemap, and HTTP header formats.

Website ToolsPWA Manifest Generator

Generate a Web App Manifest including icon declarations, theme colors, display mode, and HTML install tags.

Business ToolsSEPA QR Code Generator

Create SEPA payment QR codes as PNG or SVG, or print a payment block. English and German controls, processed locally.

Marketing ToolsOpen Graph Preview Generator

Generate Open Graph and X Card tags from your text and see an approximate preview. No website scan.

SEO ToolsSchema Markup Generator

Generate JSON-LD markup for local businesses, FAQs, products, and articles.

Which task are you working on?

A page needs business, product, or article metadata: Use Schema Markup to describe facts already visible on the page. Check your CMS output first so you do not add a conflicting second entity.
Equivalent pages serve different languages or countries: Use Hreflang for the relationship between translations. A canonical tag alone does not express which language or region each version targets.
A shared link needs a title, description, and image: Use Open Graph Preview. The preview is an approximation: publish the tags and check the destination platform, which may cache the previous image.
A web app needs an installation identity: Use PWA Manifest for the name, opening URL, scope, and icon declarations. You still need to supply the icon files and test installation on your target devices.
An invoice needs a euro transfer QR code: Use SEPA QR to encode transfer details. Scan the result in a compatible banking app and compare the payee, IBAN, amount, and reference before putting it on invoices.
A website migration needs a clean redirect map: Use the Redirect List Checker to find duplicates, loops and chains in CSV before importing rules. Check the live URLs separately after deployment.
You want to express an AI crawler access policy: Use AI robots.txt. Merge its rules with your existing file; crawler instructions do not protect private content.
You want a curated map of public documentation: Use llms.txt for the proposed file format. It is not an access policy, and publishing it does not guarantee AI citations or improved search rankings.

Three publication workflows

Publish a local business contact page

Begin with the real name and address on the page. Inspect existing structured data from your theme or SEO plugin, generate the missing location information, and compare the final page with the validator output. A successful JSON parse does not prove that the business details are correct.

Follow the shop example, from fields to published JSON-LD

Launch Austrian, German, and English versions

List the equivalent service URLs before generating tags. Publish the same alternate group on each version, check each page's canonical, and verify the return links. Repeat for each service rather than sending every translation to a homepage.

Follow the four-page hreflang deployment example

Make a project board installable

Choose the part of your website that belongs to the app, then create its manifest and icon files. Check the installed app's opening address and appearance on a target device. Test offline behavior separately because the manifest does not cache your pages.

Follow the manifest, icon, and installation checks

Why these tools exist

Many small website tasks are too specific for a large platform but too important to solve casually. A missing hreflang return link, a malformed JSON-LD block, or an unclear crawler policy can create real search, sharing, and implementation problems. Useful Toolkit focuses on narrow tools that produce practical output you can inspect before publishing.

The generators process your input in your browser. Each page pairs the output with an example and publication checks. Open Graph's optional image preview contacts the image host only when you select Load image preview.

How tools are selected

Clear user intent

Each tool handles one publishing task, such as declaring language alternatives or preparing a transfer QR code.

Reviewable output

The result should be text, markup, metadata, or a file that users can inspect before use.

Low setup cost

The generators work without an account or sending your form inputs to our server.

Who maintains Useful Toolkit

Useful Toolkit is maintained by Martin Trixner, TRIXNER digital solutions, a web developer based in Linz, Austria. His work includes WordPress, TYPO3 and PHP projects, as well as AI-assisted business processes. The toolkit focuses on small publishing tasks that need readable, reviewable output.

The examples document inputs and expected output; the linked platform documentation explains the rules behind them. A generated file still needs checking on its destination website. Read about Martin's professional work at TRIXNER orreport an incorrect result with non-confidential sample data.

FAQ

Are the tools free?

Yes. The current tools are free to use and run in the browser.

Do I need an account?

No account is required for the live generators.

Why does each tool have its own page?

Each generator has a focused page with its own examples, limitations, FAQ, and source links so users can understand the output before copying it.

Should generated output be reviewed?

Yes. The tools create practical drafts, but technical output should always be checked against the live website, business details, and current platform documentation before publication.

Is input sent to a server?

No generator inputs are sent to our server. Open Graph's optional image preview loads the image directly from its host when you request it. See the privacy policy for details.

Optional usage statistics