Free Developer Tools & Resources
Tools, experiments, and resources to help you build faster, debug smarter, and explore new ideas—completely free and ready to use.
Free Tools
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Vector Embedding Calculator
Compare semantic similarity between texts using vector embeddings. Calculate cosine similarity, visualize vectors, and understand AI text comparison in this interactive tool.
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Diff Checker
Compare two chunks of text and see the differences between them.
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Free Invoice PDF & Image to Excel Converter
Convert your invoice PDFs and images (PNG, JPG, JPEG, WebP) to Microsoft Excel or Google Sheets with this free tool.
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SQLite Playground
A free, interactive tool for exploring and testing SQLite queries in your browser. Import data, run queries, and export results.
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Survival Rate Calculator
Find out how long your savings will last based on your income, expenses, and investments.
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LLM Prompt Formatter
Format and improve your LLM prompts with this free tool. Create better structured, effective prompts.
Free Guides
Free Templates
Coming Soon
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I'm regularly adding new free resources. Let me know what would help you most!