Diff Checker v2
Paste two versions of any code snippet and see exactly what changed — with syntax highlighting and inline character-level diff. Choose between unified (GitHub-style) or split side-by-side view. Auto-detects JavaScript, TypeScript, Python, Rust, Go, SQL, CSS, JSON, and YAML. Runs 100% in your browser — nothing is sent to any server.
Related Products
on GumroadDeveloper Productivity Bundle
Stop rebuilding the same setup every project. 51 VSCode snippets, 40 Git aliases, 5 Docker Compose stacks, 5 GitHub Actions workflows, 5 README templates, and a dotfiles kit. Set up a professional dev environment in under an hour.
Buy on Gumroad →Developer Productivity Toolkit
Complete dev environment setup: VS Code settings, keybindings, snippets, shell aliases, Git hooks, tmux config, and Starship prompt. Copy, paste, code faster.
Buy on Gumroad →Notion Productivity Templates for Freelancers
Notion workspace templates designed for freelancers: client tracker, project pipeline, invoicing, time tracking, and goal setting. Get organized in minutes.
Buy on Gumroad →More Free Tools
Related Articles
Best Free Developer Tools Online 2026: The Complete Comparison
Compare the best free developer tools online in 2026. JSON formatters, regex testers, base64 encoders, code formatters — side-by-side ratings for speed, features, and privacy.
Free vs Paid Developer Tools: When to Upgrade (2026 Guide)
Should you pay for developer tools in 2026? We break down exactly when free tools are enough, when to upgrade, and how to get Pro features without overpaying.
Git Merge vs Rebase: When to Use Each
Git merge vs rebase — understand the real difference, when each strategy makes sense, and which one to choose for your team's workflow. Includes practical examples and common mistakes to avoid.
Get weekly developer tips
Tool guides, productivity playbooks & AI tricks. Free. No spam.
Unlock AI-Powered Dev Tools
- ⚡ AI Code Review, Doc Generator & SQL Builder
- ⚡ All premium templates & early access
- ⚡ Member discounts on Gumroad products
$9/mo after trial · Cancel anytime
Want the full toolkit?
Get DevPlaybook Pro
Every template, guide, boilerplate, and automation script in one bundle. 13 premium products — grab them all at once and save big.
MIT licensed · Instant download · No subscription
See what's included → Browse all deals →