Calculators, checkers, and generators for bloggers, SEOs, and digital marketers — built by the team behind the GuestPostOn marketplace. Every tool works instantly, with nothing uploaded to a server.
Project cost, traffic, leads, and ROI for a guest post campaign.
Use free →Generate your GuestPostOn verified-listing badge for your site.
Use free →Work out whether your link building spend actually pays back.
Use free →Budget a guest posting campaign with realistic market prices.
Use free →Turn any niche keyword into 15 ready-to-use Google footprints.
Use free →Build a personalized pitch email in three tones.
Use free →Score a subject line before you hit send.
Use free →Classify your anchors and spot over-optimization instantly.
Use free →Messy URL dump in, clean unique domain list out.
Use free →Character + pixel check against Google's display limit.
Use free →Length, pixels, and call-to-action verb checks.
Use free →Live Google-result mockup with pixel-accurate warnings.
Use free →All core meta tags generated from five fields.
Use free →og: tags for flawless link previews everywhere.
Use free →twitter:card tags for large-image link previews on X.
Use free →Normalized rel=canonical from any messy URL.
Use free →Compose robots directives without memorizing syntax.
Use free →Paste language|URL pairs, get valid hreflang tags.
Use free →Clean, hyphenated slugs from any titles — in bulk.
Use free →Occurrences + density % with a stuffing warning.
Use free →Flesch score, grade level, and sentence stats live.
Use free →Q&A lines in, valid FAQPage JSON-LD out.
Use free →Complete Article JSON-LD from a short form.
Use free →Name|URL lines become a valid BreadcrumbList.
Use free →Your brand's entity markup: logo, contact, sameAs.
Use free →NAP + business type as valid LocalBusiness markup.
Use free →Correct robots.txt with presets and AI-bot rules.
Use free →URL list in, standards-valid sitemap.xml out.
Use free →Old→new pairs become ready 301 rules.
Use free →Live words, characters, sentences, paragraphs.
Use free →Characters with/without spaces, letters, digits.
Use free →Read + speaking time at realistic speeds.
Use free →Top repeated words with counts and percentages.
Use free →0–100 headline score with concrete improvement hints.
Use free →12 titles from proven formulas for your keyword.
Use free →14 post angles tailored to your niche + audience.
Use free →Pillar + 10 clusters + linking rules for any topic.
Use free →Six case modes including smart Title Case.
Use free →Dedupe lists with exact or case-insensitive matching.
Use free →Tags stripped, entities decoded, structure kept readable.
Use free →Correctly encoded campaign URLs from five fields.
Use free →Sentence-aware splitting with (n/m) counters.
Use free →20 tag variations from your topic keywords.
Use free →One post checked against six platform limits.
Use free →Clicks ÷ impressions with context benchmarks.
Use free →CVR plus revenue-per-visitor in one view.
Use free →ROAS with the break-even line your margin implies.
Use free →CPM, per-impression cost, impressions per $100.
Use free →From list size to projected revenue and ROI.
Use free →ER by followers with quality benchmarks.
Use free →Pageviews → realistic monthly ad revenue.
Use free →EPC + conversion rate to compare offers fairly.
Use free →GuestPostOn lists 1,000+ ownership-verified sites with real DA, traffic, spam score, and transparent prices — re-verified every 90 days.