Free tools for the work between the ideas.
Plan campaigns, manage tracking, measure performance and create better marketing content. Nothing to install, nothing to sign up for.
KestryCampaign Naming Generator
Create consistent, scalable campaign names for your marketing team in seconds.
UTM Validator & Cleaner
Validate campaign URLs, catch broken UTM parameters, and clean messy tracking links.
ROAS & Break-even ROAS Calculator
Calculate your ROAS, break-even ROAS, and the maximum you can afford to spend per customer.
Social Media Image Size Checker
Check instantly whether your image fits Instagram, Facebook, LinkedIn, X, TikTok, YouTube, and Pinterest.
SERP Snippet Preview
Preview how your page title and meta description may appear in Google search results.
UTM Bulk Generator
Build hundreds of correctly-encoded campaign URLs at once — by hand or from a CSV.
Email Subject Line Tester
Score your email subject line on length, clarity, engagement, and spam-risk signals.
Marketing KPI Calculator
Enter the numbers you have — get every marketing metric that can be derived from them.
Turn your knowledge into an AI assistant.
Kestry answers customer questions, engages website visitors and captures leads — using what your business already knows.