Tools
Browser-based tools that fix practical data and text problems.
CSV Encoding Fixer
Diagnose garbled CSV text and export an Excel-friendly UTF-8 BOM file.
JSON Error Doctor
Find JSON error positions, explain common causes, and format or minify valid JSON.
AI Token & Cost Calculator
Estimate token counts and costs for Korean, English, and Japanese prompts.
Byte / Character Counter
Count characters, bytes, lines, and SEO title or meta description lengths.
Markdown Table Generator
Convert CSV or TSV into a GitHub-friendly Markdown table.