12 tools · free · private

Free tools for developers & writers, right in your browser

12 small, single-purpose tools — slugify text, clean up duplicate lines, generate UUIDs and passwords, calculate dates and investment growth, and more. Nothing you type is ever sent to a server, and there's nothing to sign up for.

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Calculators

Investment Growth CalculatorModel compound interest, contributions, tax, and inflation Date CalculatorDays between two dates, or a date N days before/after another

Text Tools

URL Slug GeneratorTurn text into a clean, SEO-ready URL slug Remove HTML TagsStrip markup and get plain text Remove Duplicate LinesDeduplicate a list, keep first occurrence Extract URLs From TextPull every http(s) link out of a blob of text Count Duplicate LinesSee how many times each line repeats Unescape HTML EntitiesDecode & and friends back to literal characters Case ConverterSwitch between UPPERCASE, camelCase, snake_case, and more HTML to Markdown ConverterPaste HTML, get clean Markdown back

Generators

Random Password GeneratorGenerate a strong password locally UUID GeneratorGenerate random v4 UUIDs in bulk

See it in action

A quick look at what a couple of the tools do.

URL Slug Generator

to slugify strings

Before

Aaron James
Christopher Neal

After

aaron-james
christopher-neal

Open tool

Case Converter

converts between 8 text case styles

Before

hello world example

After

helloWorldExample

Open tool

Runs in your browser

Every tool executes locally. Nothing you type or upload is sent to a server.

No sign-up

No account, no email, no waiting. Open a tool and use it.

Always free

No paywalls or premium tiers — every tool is fully usable for free.