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FileKit
12 tools

Web And SEO Tools

Generate meta tags, structured data, robots directives and campaign links that are valid the first time. These web and SEO tools produce output that matches the current specifications rather than advice from a decade ago.

Canonical Tag Generator

Build a canonical link tag with URL normalisation, plus guidance on self referencing canonicals, tracking parameters and cross domain use.

Hreflang Tag Generator

Build hreflang link tags from language and region pairs, with ISO 639-1 and ISO 3166-1 validation, x-default handling and sitemap XML output.

Htaccess Redirect Generator

Build 301 and 302 redirect rules for Apache with plain path, wildcard and regex modes, plus the equivalent Nginx configuration.

Keyword Density Checker

Analyse pasted text or HTML for one, two and three word phrase frequency and density, with a stop word filter and a target keyword check.

Meta Tag Generator

Build a complete set of HTML meta tags, from title and description to Open Graph and Twitter card, with live character counters and one click copy.

Open Graph Preview Generator

Build Open Graph tags and see an accurate preview of the link card on Facebook, LinkedIn, Slack and Twitter before you publish.

QR Code Generator

Create a QR code from any URL or text with a chosen error correction level, size, margin and colours, downloadable as PNG or SVG.

Robots TXT Generator

Build a robots.txt file with user agent groups, allow and disallow rules, crawl delay and sitemap references, using tested presets.

Schema Markup Generator

Generate valid JSON-LD for Article, Product, FAQPage, HowTo, LocalBusiness, Organization, BreadcrumbList and Event with required fields checked for you.

SERP Snippet Preview Tool

See a pixel accurate desktop and mobile Google search preview, with the title, URL breadcrumb and description measured against real truncation widths.

Sitemap XML Generator

Paste a list of URLs and generate a valid XML sitemap with lastmod, changefreq and priority, with warnings past the size and URL count limits.

UTM Link Builder

Build campaign links with source, medium, campaign, term and content parameters, with validation, lowercase normalisation and a bulk mode.

Why use browser based web and seo tools

Technical SEO output has to be exactly right or it silently does nothing. A schema block with a missing required property will not produce a rich result. A robots directive in the wrong syntax will not block anything. An Open Graph tag with the wrong image dimensions will render a broken card. These web and SEO tools generate output that validates against the current specification and explain what each field actually does.

The generators also show you the rendered result alongside the raw markup. You can see how a title and description will truncate in a search snippet, how a social card will crop, and how a structured data block maps to the properties a search engine actually reads.

Frequently asked questions

Yes. Every tool in this category is free with no account, no trial and no daily limit. The tools run as JavaScript inside your own browser, so there is no server cost to pass on and no reason to meter usage.

No. Files are read directly from your device into browser memory, processed locally and written back out as a download. Nothing is transmitted, nothing is logged and nothing is stored after you close the tab.

There is no limit imposed by us. The practical ceiling is your own device memory, because the file has to fit in the browser tab while it is being processed. Most machines handle files of several hundred megabytes without trouble.

Current versions of Chrome, Edge, Firefox and Safari on desktop and mobile are all supported. Where a specific tool depends on a capability that a browser has not shipped yet, that tool says so on its own page before you select a file.