Codevup
Free, open-source web tools and guides for developers. No registration, no tracking, just productivity.
Featured Tools
See all tools →Markdown to PDF Resume
Convert any Markdown document to beautiful PDF with live preview. Perfect for resumes, documentation, reports, and any text content. No login, no backend, instant PDF export.
QR Code Generator
Free tool to generate QR codes, create QR codes online and download as PNG. Customize size, logo, color and background.
Code Diff Highlighter
Create beautiful, syntax-highlighted code diffs for your blog posts and documentation.
Latest Posts
See all posts →
How to Add Table of Contents to MD/MDX Files in Next.js with rehype-toc
Learn how to add a table of contents to your MDX files in Next.js with rehype-toc, with a simple and maintainable approach and low-code solution. Learn about the importance of adding TOC to a blog post for SEO and user experience, and how to handle it for mobile devices.
Last updated: July 26, 2025

Introduction to Elixir Programming - Learn Elixir Part 1
Start your journey with Elixir programming language. Learn about the Erlang VM, functional programming, and set up your development environment.
Last updated: July 17, 2025

Basic Syntax and Data Types - Learn Elixir Part 2
Master Elixir fundamentals including data types, pattern matching, functions, and functional programming concepts.
Last updated: July 17, 2025