Free Developer Utility Tools
Free online developer utility tools. Test regex, generate fake data, create QR codes, and more — no installation needed.
22 tools available
Regex Tester
Test regular expressions interactively
HTTP Header Parser
Parse HTTP headers
Fake Data Generator
Generate mock data
Commit Message Generator
Generate conventional commits
Currency Formatter
Format currency values
Array Sorter & Shuffler
Sort and shuffle arrays and objects
Word Counter
Count words, characters, sentences and paragraphs instantly
Swagger / OpenAPI Viewer
Visualize and explore OpenAPI 3.x and Swagger 2.0 specs instantly
QR Code Generator
Generate QR codes instantly from URLs, text, or JSON — no backend needed
Code Screenshot Generator
Create beautiful, shareable images of your code
Mini Postman (API Tester)
Test REST APIs directly in your browser — no install needed
Gitignore Generator
Generate production-ready .gitignore files for any tech stack
Image to WebP Converter
Convert images to WebP format instantly in your browser
GitHub Profile README Builder
Build a modular GitHub profile README with live preview
Broken Link Checker & Cleaner
Find, remove, and replace dead URLs from text, files, and webpages
Internet Speed Test
Check download speed, latency, jitter, and upload availability from your browser
Open Graph Previewer
Preview social cards and debug Open Graph, Twitter Card, and HTML metadata
Screenshot Full Webpage
Capture public webpages as full-page or viewport images
Mixpanel Toolkit
Local Mixpanel event sandbox
AI Coding Prompt Generator
Build clear, validated coding prompts for your favorite AI assistant.
Browser P2P File Transfer
Send files directly between two browsers using WebRTC. No upload, no account, no server storage.
Task Handoff Compiler
Turn messy requirements into an execution-ready engineering handoff with readiness checks, scope guards, and validation plans.
Related Use Cases
Explore Other Categories
About Free Developer Utility Tools
Free online developer utility tools. Test regex, generate fake data, create QR codes, and more — no installation needed. All tools are 100% free, work entirely in your browser for maximum privacy, and require no installation or sign-up. Whether you're debugging, converting data formats, or generating code, our free developer utility tools help you work faster and smarter.
Why Choose Our Tools?
- Privacy-First: All processing happens in your browser — no data leaves your device.
- Instant Results: Client-side processing means zero server delays.
- No Sign-Up: Start using any tool immediately, no registration required.
- Multilingual: Available in 10 languages for developers worldwide.