Best Free AI & SEO Tools for Daily Use in 2026
📑 Table of contents (4)
You don't need a $200/month stack. Ten focused free tools cover 90% of daily AI cost estimation, meta-tag generation, schema markup, JSON debugging, and fee math.
AI cost & token tools
GPT Token Calculator — paste a prompt, get the token count and USD estimate before you hit the API.
AI API Cost Calculator — compare GPT-4o vs Claude 3.5 vs Gemini 1.5 for the same workload in seconds.
SEO essentials
Meta Tag Generator with live Google + social preview.
JSON-LD Schema Generator for Organization, Article, FAQ, and HowTo — critical for AI Overviews (AEO) and generative search (GEO).
Sitemap and robots.txt generators for every new project.
Developer utilities
JSON Formatter/Validator, Base64 encoder, UUID v4 generator — the trio you need weekly and always forget to bookmark.
Finance calculators
PayPal, Etsy, Shopify, VAT, and Freelance rate calculators — every calculation you'd otherwise redo in a spreadsheet.
FAQs
Are these tools really free?
Yes — all FastDailyTools tools are 100% free, no sign-up, no rate limits, no data upload. Everything runs in your browser.
Can I trust in-browser tools with private data?
Yes — because nothing is uploaded. Your prompts, JSON, and financials never leave your device.
Are the tools in this list really free?
Yes — every tool listed runs in the browser with no sign-up and no paywall, which is the point of the list: meta tags, schema, sitemaps, token costs and fee math without a monthly stack.
Which tool should I start with?
Start with the job you do most. For a new page, the meta tag generator; for AI spend, a token calculator; for a broken feed, the JSON formatter. The list is organised by daily job, not by tool type, for that reason.