Proof of Concepts
A collection of experimental projects and proof-of-concept implementations exploring different technologies and ideas.
Car Mileage Analyzer
CompletedAnalyze car mileage data with intelligent parsing, MPG tracking, and interactive charts
Hours Adder with Temporal API
CompletedCalculate work hours using the new Temporal API for precise time calculations and duration tracking
Markdown to PDF
CompletedConvert markdown to PDF with GitHub-flavored markdown and authentic GitHub CSS styling. Privacy-focused with offline support.
HTML to PDF Converter
CompletedConvert raw HTML with CSS to PDF. Full control over styling and layout with live preview. Perfect for invoices, reports, and certificates.
JavaScript Minifier
CompletedMinify JavaScript code entirely in your browser using Terser. Real-time minification with compression enabled and mangle disabled.
Shared Grocery List
CompletedCollaborative grocery list with shareable 6-character IDs. No sign-up required - just share the ID and start shopping together.
Passkey Authentication Demo
CompletedExperience passwordless authentication with WebAuthn API and biometric authentication
Email Authentication Demo
CompletedComplete email signup flow with verification, OTP generation, and JWT authentication
Combined Authentication Demo
CompletedUltimate auth flow combining email verification, OTP, and passkey authentication with flexible login options
Magic Link Authentication Demo
CompletedPasswordless authentication with magic links that verify email and sign users in automatically
Magic Link + Passkey Demo
CompletedUltimate passwordless authentication combining magic links for signup/verification with optional passkey registration for flexible login options
Plaid JSON to Test User Converter
CompletedConvert Plaid Asset Report JSON to Plaid Test User JSON format. Simple frontend-only structural transformation.
Plaid Transaction Viewer
CompletedView and explore Plaid transaction data organized by month. Search, filter, and browse your financial history with collapsible sections.
Plaid Bank Statement Generator
CompletedGenerate an official-style HTML bank statement from Plaid Asset Report or Transactions JSON (auto-detected), with bank-branded header, account summary, and running balances. Send to HTML to PDF for export.
JSON Structure Diff
CompletedCompare JSON object structures (property names) with deep nesting support. Perfect for comparing API responses and data models.
PDF Document Classifier
CompletedTell a bank statement from a loan application in under 10 seconds, from a PDF or an image scan, with OCR and month extraction for statements.
Bank Statement Cashflow Analyzer
In DevelopmentConfirm a PDF is a bank statement with the PDF classifier, then summarize its cashflow: monthly inflow/outflow, balances, NSF/overdraft fees and lender debits, reconciled against the statement.
More POCs coming soon! Each project explores different technologies and concepts.