Product definition
Scoped the one-day build around one practical task: inspect a CSV before importing it into another system.
Open Source / CSV Inspection / Daily Build
CSV Quicklook
/ Overview
A dependency-free browser utility for previewing CSV files, spotting uneven rows and checking column completeness before an import.
CSV files can contain uneven rows, missing values or quoting mistakes that remain hidden until an import fails or produces incomplete records.
/ Provided servicesClear thinking.
Clear thinking.
Practical delivery.
Interface design
Created a responsive neo-brutalist workspace for file input, parsing controls, quality signals, a table preview and column summaries.
Engineering
Separated character-by-character parsing, validation and column summaries into dependency-free functions that can be tested in Node.
/ Solution
I built a local browser tool that parses comma, semicolon or tab-delimited text, previews the first 20 rows, flags structural problems and summarizes filled, empty and unique values for every column.
/ Impact
Local-only CSV processing
Quoted-field and newline support
Structural row validation
Seven passing parser tests
JavaScript
A character-by-character parser handles quoted fields, escaped quotes, quoted newlines and alternate delimiters.
HTML & CSS
Semantic controls, accessible feedback and responsive table overflow support local file and pasted-text workflows.
Node test runner
Seven tests cover empty input, quoted commas, escaped quotes, multiline fields, alternate delimiters, uneven rows and summaries.