Check character risks
This is a risk scan, not a complete Shift_JIS compatibility guarantee.
Your input is processed in your browser and is not sent to our server.
FREE WEB TOOL
Find unsupported and control characters that may cause garbled CSV text.
This is a risk scan, not a complete Shift_JIS compatibility guarantee.
Your input is processed in your browser and is not sent to our server.
Check CSV Mojibake and Unsupported Character Risks is a free web tool from BlueprintLab Tools. Find platform-dependent characters, Shift_JIS incompatibilities, and control characters that may cause garbled text after a CSV upload.
Use it when you need to inspect, compare, clean, or transform CSV and structured data quickly.
No account is required. The tool is designed to complete the task directly in your browser with a short input → process → result flow.