Developer tools that make your work faster
A professional platform of free developer tools and AI-powered utilities. Format JSON, decode JWTs, generate UUIDs, explain code, and much more — all running in your browser, no sign-up required.
Popular Developer Tools
The tools developers use most — fast, free, no registration.
Website SEO Checker
Audit on-page SEO, detect title & meta issues, and export PDF reports.
JSON Formatter
Format, validate, and minify JSON with syntax highlighting.
Base64 Encoder/Decoder
Encode and decode Base64 strings with Unicode support.
UUID Generator
Generate UUID v4 identifiers — single or in bulk.
JWT Decoder
Decode JWT tokens and inspect header, payload, and claims.
Regex Tester
Test regular expressions with live match highlighting.
Timestamp Converter
Convert between Unix timestamps and human-readable dates.
Images to PDF Converter
Convert JPG, PNG, and WebP images to a combined PDF document.
PDF to Image Converter
Convert PDF pages to high-resolution PNG or JPG images.
PDF to Word Converter
Convert PDF documents to editable Microsoft Word (.docx) format.
Image Format Converter
Convert across WebP, PNG, JPG, BMP, ICO, and SVG vector formats.
Image Resizer & Size Reducer
Resize image dimensions and reduce file size by up to 90%.
Gemini & AI Watermark Remover
Remove Google Gemini sparkle watermarks and AI badges automatically.
AI Developer Tools
Supercharge your workflow with AI-assisted tools.
AI Code Explainer
Get plain-English explanations of any code snippet.
AI Debugger
Diagnose bugs and get suggested fixes for your code.
AI SQL Generator
Generate SQL queries from natural language for any dialect.
AI Cover Letter Writer
Generate tailored, ATS-optimized cover letters from any job description.
Free Premium Developer Courses
Top-rated programming, AI, and cloud certification courses available for $0.
Deep Reinforcement Learning using python 2025
Professional Diploma in Office Management (PDOM)
Fundamentals of Supply Chain Management
Tutorials
Step-by-step guides for real developer problems.
Latest Articles
Technical articles from the DevTools team.
Understanding JWT Security: What Developers Get Wrong
JWTs are everywhere, but they're often misused. Learn the common security pitfalls and how to avoid them.
Sep 5, 2026
10 SQL Query Optimization Techniques You Should Know
Slow queries are costing you money. These proven techniques can reduce query time by 10x.
Sep 3, 2026
The Regex Patterns Every Developer Should Know
Regular expressions are powerful but confusing. Master these 20 patterns and you'll cover 90% of real use cases.
Sep 1, 2026
Latest Tech & AI News
What's happening in the developer ecosystem.
OpenAI Releases o3 Model with Significantly Improved Reasoning
OpenAI's latest model shows major improvements in mathematical reasoning and coding tasks.
GitHub Copilot Workspace Now Generally Available
GitHub's AI-native developer environment moves out of technical preview with new collaboration features.
TypeScript 6.0 Released with Major Performance Improvements
The new major version brings faster compilation, improved type inference, and new configuration options.