Useful tools for developers and writers

A collection of 24 simple, useful tools for writing, SEO, AI, and development. Pick one below to get started.

Writing & Content7

Word & Character Counter

Count words, characters, sentences, paragraphs, and estimate reading time from any text.

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Case Converter

Convert text between camelCase, snake_case, kebab-case, Title Case, UPPER CASE, lower case, and more.

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Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words for your designs and templates.

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Reading Time Calculator

Estimate how long it takes to read any text. Get word count, reading time, and speaking time.

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Markdown Preview

Write Markdown and see a live HTML preview. Supports headers, bold, italic, links, code, lists, and more.

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Markdown Table Generator

Build Markdown tables visually with a spreadsheet-like editor. Copy the generated Markdown instantly.

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Text Diff Checker

Compare two texts side by side and highlight the differences between them.

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SEO & Marketing3

Slug Generator

Convert any text into a URL-friendly slug. Perfect for blog posts, pages, and SEO-friendly URLs.

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Open Graph Meta Tag Generator

Generate Open Graph and Twitter Card meta tags for better social media sharing previews.

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Mailto Link Generator

Generate mailto links with pre-filled subject and body. Get plain links and HTML anchor tag code.

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AI & LLM1

LLM Token Counter

Estimate token counts for OpenAI GPT, Claude, Gemini, and other LLM models. Calculate API costs.

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Developer Tools13

JSON Formatter & Validator

Format, validate, and minify JSON. Prettify messy JSON with syntax highlighting.

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Base64 Encoder & Decoder

Encode text to Base64 or decode Base64 strings back to plain text.

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Regex Tester

Test regular expressions against text in real time. See matches highlighted with capture groups.

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UUID Generator

Generate random UUIDs (v4) instantly. Create single or bulk UUIDs for your applications.

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Hash Generator

Generate SHA-256, SHA-384, SHA-512, and SHA-1 hashes from any text using the Web Crypto API.

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HTML Entity Encoder & Decoder

Encode special characters to HTML entities or decode HTML entities back to text.

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URL & Domain Extractor

Extract URLs and domain names from any block of text. Supports full URLs and naked domains.

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YAML Frontmatter Generator

Generate YAML frontmatter for 11ty, Astro, Hugo, Jekyll, and other static site generators.

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Color Converter

Convert colors between HEX, RGB, and HSL formats. Live color preview included.

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CSS Unit Converter

Convert between CSS units: px, rem, em, pt, and percentages. Set your base font size.

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Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates. Get the current timestamp instantly.

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Number Base Converter

Convert numbers between decimal, hexadecimal, binary, and octal bases instantly.

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Cron Expression Parser

Parse and explain cron expressions in plain English. Validate cron schedules for your automation jobs.

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