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 & Content 7

Word & Character Counter

Count words, characters, sentences, paragraphs, and reading time.

Use tool

Case Converter

Convert between camelCase, snake_case, kebab-case, Title Case, and more.

Use tool

Lorem Ipsum Generator

Generate placeholder text in paragraphs, sentences, or words.

Use tool

Reading Time Calculator

Estimate reading and speaking time for any text.

Use tool

Markdown Preview

Write Markdown and see a live HTML preview side by side.

Use tool

Markdown Table Generator

Build Markdown tables visually with a spreadsheet-like editor.

Use tool

Text Diff Checker

Compare two texts side by side with highlighted differences.

Use tool

SEO & Marketing 3

Slug Generator

Convert text into clean, URL-friendly slugs with stop word removal.

Use tool

OG Meta Tag Generator

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

Use tool

Mailto Link Generator

Generate mailto links with pre-filled subject and body text.

Use tool

AI & LLM 1

LLM Token Counter

Estimate token counts and API costs for GPT-4o, Claude, and Gemini.

Use tool

Developer Tools 13

JSON Formatter

Format, validate, and minify JSON with instant feedback.

Use tool

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 back to text.

Use tool

Regex Tester

Test regex patterns against text with live match highlighting.

Use tool

UUID Generator

Generate random UUIDs (v4) in bulk with formatting options.

Use tool

Hash Generator

Generate SHA-256, SHA-384, SHA-512, and SHA-1 hashes.

Use tool

HTML Entity Encoder/Decoder

Encode special characters to HTML entities or decode them.

Use tool

URL & Domain Extractor

Extract URLs and domain names from any block of text.

Use tool

YAML Frontmatter Generator

Generate YAML frontmatter for 11ty, Astro, Hugo, and Jekyll.

Use tool

Color Converter

Convert between HEX, RGB, and HSL with live color preview.

Use tool

CSS Unit Converter

Convert between px, rem, em, pt, and percentages.

Use tool

Unix Timestamp Converter

Convert between Unix timestamps and human-readable dates.

Use tool

Number Base Converter

Convert between decimal, hex, binary, and octal.

Use tool

Cron Expression Parser

Parse cron expressions into human-readable descriptions.

Use tool