Free tools
Free SEO & marketing tools,
no signup required.
Preview SERP snippets, generate structured data, build tracking links, and run ad calculators — fast, private, and free forever. Built for lean teams who need the utility now, not another platform subscription. When you want the whole job done on a schedule — research, drafting, publishing, and reporting — mktcrew does it for you.
Social Media Character Counter
Paste your post and instantly see character counts, limits, and truncation warnings for LinkedIn, X, Instagram, Facebook, Threads, Bluesky, and more — no signup, no AI, instant.
Open toolSERP Snippet Preview
See how your page title and meta description will render in Google search results — desktop and mobile, with real pixel-width truncation so you know exactly where it cuts off.
Open toolJSON-LD Schema Generator
Generate valid JSON-LD structured data for FAQ, Article, Organization, and LocalBusiness schemas. Fill in the fields, copy the markup, and paste it into your page.
Open toolROAS Calculator
Calculate return on ad spend from revenue and ad spend — or build it from conversions and revenue per conversion. See ROAS ratio, percentage, profit, and CPA instantly.
Open toolLTV:CAC Calculator
Calculate the ratio of customer lifetime value to acquisition cost. Enter LTV and CAC directly, or derive them from ARPU, gross margin, churn, spend, and new customers.
Open toolUTM Link Builder
Add UTM tracking parameters to any URL. Fill in source, medium, campaign, term, and content to get a clean, URL-encoded tracking link for Google Analytics 4.
Open toolUTM Link Parser & QA
Paste a URL and inspect its UTM parameters. Catch missing source/medium/campaign, spaces, mixed case, and duplicate params before they break your GA4 attribution.
Open toolAds Character Counter
Check headline and description limits for Google Search & Display Ads, Meta Ads, LinkedIn Ads, and Microsoft Ads — 12 ad fields, live as you type.
Open toolCPC, CPM & CPA Calculator
Calculate cost per click, cost per 1,000 impressions, or cost per acquisition from your ad spend — three calculation modes, instant results.
Open toolAd Budget Pacing Calculator
See whether a campaign is on pace, overpacing, or underpacing against its monthly budget, plus a projected month-end spend.
Open toolMarketing Budget Allocator
Split a total marketing budget across channels by percentage. Add or remove channels and see the dollar amount and allocation status update live.
Open toolEmail Subject Line Checker
Check your subject line and preview text against truncation limits for Gmail, Outlook, Apple Mail, and Yahoo Mail — desktop and mobile.
Open toolBest Time to Post Calculator
Benchmark posting windows for 7 platforms, converted to your audience's timezone. A research-backed starting point — your own analytics always win.
Open toolOpen Graph & Twitter Card Previewer
Paste your page's HTML and preview exactly how the link card renders on Facebook, LinkedIn, and X — plus a check for missing og: and twitter: tags.
Open toolRobots.txt Generator
Build a robots.txt with per-path rules and explicit allow/block controls for AI crawlers — GPTBot, ClaudeBot, PerplexityBot, Google-Extended, and more.
Open toolSitemap XML Validator
Paste or upload a sitemap.xml and check it's well-formed — missing <loc> tags, bad <lastmod> dates, relative URLs, and the 50,000-URL limit.
Open toolMore tools coming
We're adding new free tools regularly. Have an idea for one? Email hello@mktcrew.com.
Want it all done for you?
mktcrew runs a full marketing crew — research, content, social, ads, and reports — on a schedule you set. You approve every publish.
No credit card required · Cancel anytime · Full agent crew on Starter limits · Human approval on every live action
OAuth-only integrations · We never store platform passwords.