About Kdp.Cool

A portal of fast, no-signup web tools.

What this is

Kdp.Cool is a portal that hosts focused, single-purpose web tools. Each "tool family" lives on its own subdomain so the homepage stays uncluttered. The goal is practical: open a page, use the tool immediately, understand how the result was produced, and leave without creating an account.

The family

• calc.kdp.cool — Financial calculators. Mortgage, auto loan, paycheck, income tax, compound interest. Each calculator runs entirely in your browser, gives instant results as you type, and shows the underlying math.
• convert.kdp.cool — Format converters. Time zone, unit, and temperature converters with formula or source-data explanations.
• dev.kdp.cool — Developer tools. JSON formatter and Base64 encoder/decoder, with browser-only processing.
• text.kdp.cool — Text utilities. Word counter and Lorem Ipsum generator for drafting, layout, and editorial checks.
• ai.kdp.cool — Practical AI utilities for prompts, token cost estimates, and safer AI workflows.

Why it exists

Most online tools are slow, require email signups for "premium features," hide the math, and hammer you with intrusive ads. We built Kdp.Cool because we wanted the opposite: instant, transparent, free.

How we keep it free

The site is supported by Google AdSense. We aim to keep ads non-intrusive — fixed layout positions, no auto-playing video, no popups. If you'd like to support us further, simply share a link.

Our methodology

• Source data: Where applicable, we cite the authoritative source (e.g., the IRS Revenue Procedure number for tax tables).
• Math: Every calculator shows its formula in a "Show the math" section, so you can verify or learn. No black boxes.
• Local-first tools: When a task can run in the browser, it should. Text, JSON, Base64, and similar inputs stay on your device.
• Maintenance signals: Tool pages include review dates, limitations, and plain-English explanations so readers can judge whether the result fits their situation.
• Open source: The site's code is on GitHub at github.com/kedoupi/kdp-tools. Found a bug? Open an issue.

What we do not do

• No email walls for basic tools.
• No fake rankings, scraped tool directories, or pages made only to chase search keywords.
• No popups, auto-playing video ads, or interface tricks that push accidental ad clicks.
• No server-side upload for tools that can safely run in the browser.

What's next

Active work is split between quality passes on the existing tool families and practical AI utilities on ai.kdp.cool. We prioritize tools that solve repeatable tasks, have transparent logic, and can cite official or stable references where accuracy depends on outside data. See the repo roadmap.

Contact

See Contact.