Free Developer Utility Tools
Free online developer utility tools. Test regex, generate fake data, create QR codes, and more — no installation needed.
41 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 credible, project-first GitHub profile README that stays clean and GitHub-safe
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
Choose what you want the AI to do and get a prompt structured for that coding task.
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.
Invoice Generator
Create professional PDF invoices locally with accurate totals, branding, and reusable history.
Browser Video Call
Make a direct one-to-one P2P video call with screen sharing and private browser-to-browser chat.
Animated QR File Transfer
Transfer small files through animated QR codes with no upload, account, network, or pairing.
Video Picture-in-Picture
Keep a local video, direct URL, webcam, or screen capture visible while you work.
Document Picture-in-Picture
Upload or open a document and keep its scrollable preview visible while you work.
Music Player
Play private local audio, arrange a playlist, and keep compact controls visible while you work.
Floating Notes
Write private notes and checklists that autosave locally and stay visible in a floating view.
Form Validation Generator
Design validation once and generate framework-neutral code.
Profile Picture Badge Generator
Add an available-for-work, hiring, freelancer, event, or custom badge to your profile picture.
Wheel of Names
Random Name Picker & Wheel Spinner
Open Graph Image Builder
Create branded social preview images and metadata-ready assets
SemVer Release Advisor
Decide the exact next version from your release changes
ATS CV/Resume Builder
Create, verify, score, and export an ATS-friendly resume
Local Port Scanner
Automatically find localhost development servers
Screenshot Image Annotator
Highlight, explain, redact, and present screenshots
Dev Service Status
Check GitHub, OpenAI, Claude, Vercel, Cloudflare, npm and other developer services in one place.
PDF Diff Checker
Compare PDF text, pages, and visual changes locally
LinkedIn Carousel Generator
Design editable LinkedIn PDF carousels in a horizontal WYSIWYG workspace
Web Technologies Detector
Find a website's publicly detectable tech stack with evidence
Related Use Cases
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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 supported languages for developers worldwide.
