Essential utilities for marketers and affiliates. No signup, no tracking, everything runs in your browser. Updated March 2026.
Calculate the lifetime value of your leads based on conversion rates, average deal size, and customer retention. Enter your funnel metrics to see how much each lead is worth at every stage - from initial contact through closed deal. Use it to set CPA targets, justify ad spend, and prioritize your highest-value lead sources.
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Get StartedTest and optimize your email subject lines before you send. Get a readability score, character count analysis, spam trigger detection, and suggestions for improving open rates. Paste in your subject line to see how it performs against best practices for length, personalization, urgency, and clarity. Send better emails, get more opens.
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Get StartedEstimate your affiliate marketing earnings based on traffic, conversion rates, and commission percentages. Compare scenarios across different commission structures (5% to 30%) and see projected monthly and annual income. Set realistic revenue targets and identify which affiliate programs offer the best return for your niche.
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View ProgramsCalculate exactly how long to run your A/B test for statistically significant results. Enter your daily traffic, current conversion rate, and minimum detectable effect to get a precise timeline. Avoid the two most common testing mistakes: stopping too early (false positives) and running too long (wasted opportunity cost).
Try it freeOptimize every landing page with data-driven testing
Read GuideMeasure the return on investment of your content marketing efforts. Input your content budget, publishing frequency, organic traffic, and conversion metrics to see monthly ROI, cost per lead, and revenue per article. Compare your content performance against industry benchmarks for paid ads, social media, and email marketing.
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Read GuideBuild properly formatted UTM campaign URLs in seconds. Select source, medium, and campaign name from presets or enter custom values. Get a real-time URL preview, copy to clipboard, and keep a history of your last 5 generated links. Follow UTM best practices automatically with lowercase enforcement and space removal.
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SEO GuideScore your headlines for click-through potential before publishing. Get a detailed breakdown across 9 criteria including power words, emotional appeal, SEO length, number usage, and hook strength. See how your headline would appear in Google search results and get specific improvement suggestions for your weakest areas.
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Content GuideAnalyze your content for keyword optimization before publishing. Paste your article text and target keywords to get density percentages, top word frequencies, bigram and trigram analysis, and an SEO score. Avoid keyword stuffing while ensuring your target terms appear enough times to rank.
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SEO GuideEvaluate the quality of your backlink profile by scoring each link on domain authority, relevance, link type, and placement. Add your known backlinks and get an overall quality score with actionable recommendations for improving your link profile and closing gaps.
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SEO Tools GuideCalculate the return on investment for your social media efforts across Facebook, Instagram, LinkedIn, Twitter/X, and TikTok. Factor in both ad spend and organic time investment. Compare ROI, CPC, CTR, and conversion rates across platforms in a single dashboard to find where your marketing dollars work hardest.
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Social GuideCalculate your ideal cost-per-click bid based on target CPA, conversion rate, and profit margins. Model different bid scenarios to find the sweet spot between ad spend and return. See projected clicks, conversions, and total cost at any bid level so you never overpay for traffic again.
Try it freeLower your ad costs with smarter bidding
Analytics GuideCheck your email setup for deliverability issues before you hit send. Analyze SPF, DKIM, and DMARC records, preview your sender reputation signals, and get a deliverability score with specific fixes for any problems found. Stop landing in spam folders.
Try it freeImprove your email open rates with better deliverability
Email GuideSee exactly how your page will appear in Google search results before publishing. Enter your title tag, meta description, and URL to get a pixel-perfect preview of your search snippet on desktop and mobile. Check character limits, test different titles, and optimize for maximum click-through rate from organic search.
Try it freeOptimize your search snippets for more clicks
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