All Tools Verse
The best free online SEO and marketing tools generate the meta tags, structured data, and tracking links a site needs, plus the campaign math behind a budget, all in your browser. All Tools Verse has a set of free SEO and marketing tools that run client-side with no sign-up and nothing uploaded. This guide picks the best free tool for each task, from writing the right meta tags to building a UTM link or generating FAQ schema.
In this guide
Best SEO and marketing tools at a glance
Pick the task, then open the tool. Each is free and needs no account.
| Task | Best free tool | Good for |
|---|---|---|
| Meta tags | Meta Tags Generator | Title and description tags |
| Open Graph | Open Graph Generator | Social share previews |
| FAQ schema | FAQ Schema Generator | Rich results in search |
| Robots.txt | Robots.txt Generator | Controlling crawlers |
| UTM link | UTM Builder | Tracking campaigns |
| Keyword density | Keyword Density Checker | On page content |
| Ad math | ROAS Calculator | Return on ad spend |
Meta tags and Open Graph
The tags in a page head shape how it appears in search and on social. Meta Tags Generator writes the title and description tags, Open Graph Generator builds the tags that control the preview card on Facebook, LinkedIn, and X, and Canonical Tag Generator points search engines to the preferred version of a page to avoid duplicate content.
Structured data and schema
Schema markup helps a page win rich results. Generate it for the common types with FAQ Schema, Article Schema, Product Schema, Local Business Schema, Event Schema, and Recipe Schema. To see what a page already has, Schema Markup Extractor pulls out its existing structured data.
Crawling and indexing
To guide search engines, Robots.txt Generator builds the file that tells crawlers where they may go, Disavow File Generator prepares the list of bad backlinks to disavow, and Apple App Site Association Generator creates the AASA file for iOS deep links.
Content and keywords
For on page work, Keyword Density Checker shows how often your target terms appear so you can avoid stuffing, Social Post Length Checker keeps posts within each network limit, and Email Subject Line Tester rates a subject before you send.
Campaign tracking and UTM
To measure where traffic comes from, UTM Builder adds the tracking parameters to a link, UTM Parameter Parser reads them back out of a URL, and UTM Parameter Stripper removes them for a clean link to share.
Marketing math
For the numbers behind a campaign, ROAS Calculator works out return on ad spend, CPM CPC CPA Calculator converts between the common ad pricing models, and Customer LTV Calculator estimates the lifetime value of a customer.
How to choose the right tool
Match the tool to the goal. Improving how a page looks in search is a meta or schema generator. Controlling crawlers is robots.txt or disavow. Measuring content is the keyword and length checkers. Tracking a campaign is the UTM tools, and sizing a budget is one of the calculators. Each is a single focused tool, so you skip a heavy SEO suite for a quick job.
Trusted alternatives
For live data, Google Search Console shows how a site performs in search, and the Rich Results Test and Schema.org validator check your markup. Google Analytics reports on UTM tagged traffic, and suites like Ahrefs or Semrush handle deep keyword and backlink research. For generating a tag, file, or link, a focused free tool is faster.
Popular free tools in this guide
Frequently asked questions
How do I generate meta tags for SEO?
Use Meta Tags Generator for the title and description, and Open Graph Generator for the social preview tags. Both produce code you paste into the page head.
How do I add FAQ or product schema to a page?
Use the FAQ Schema or Product Schema generator, fill in the fields, and paste the JSON-LD into your page. Schema Markup Extractor shows what a page already has.
How do I create a robots.txt file?
Robots.txt Generator builds the file from simple options, so you can allow or block crawlers and link your sitemap without writing it by hand.
How do I build a UTM tracking link?
Open UTM Builder, enter the source, medium, and campaign, and it returns a tagged URL that Google Analytics can report on.
Are these SEO and marketing tools free and private?
Yes. Every tool is free with no account, and the work happens in your browser, so the content and links you enter are not uploaded.
What is ROAS and how do I calculate it?
ROAS is return on ad spend, the revenue earned for each unit of ad cost. ROAS Calculator works it out from your revenue and spend figures.
This guide is part of our roundup of the best free online tools.