Browser-local · CSV-first · No model call
Moyan AI Work Check
Before trusting an AI-edited CSV, compare it with your original and declare what must stay true. See passed, failed and not-checked constraints alongside exact cell changes. Passing constraints does not establish factual or business correctness.
Files are processed in browser memory. This tool does not upload files or store filenames, cell contents or hashes in telemetry or persistent storage. The surrounding site can request assets and ordinary site data. Browser extensions and downloaded files are outside this tool’s control. Reset clears working state; downloads remain on your device.
Want a guided task first? Practice a weekly sales summary with explicit acceptance criteria.
1. Choose original and edited CSVs
UTF-8, comma-separated files: up to 1 MiB, 5,000 logical records including the header, 100 columns and 100,000 cells per file. No formulas are executed.
Method and limits
Choose a unique key to align reordered records. Without unambiguous keys, the report compares row positions and cannot identify movement. Header changes fail the structure check. Protected columns require matching schema and unique nonblank keys. Deduplication checks retained key sets and uniqueness; it cannot decide which conflicting duplicate is correct.
IDs remain exact strings. Totals are optional and use plain decimal notation, at most 15 integer and 6 fractional digits. Locale separators, blanks and exponents are not interpreted. Dates, missing values and other ambiguous strings need human review; flags are not exhaustive. No spreadsheet formulas, hallucination detection or live agent integration are included.
Public synthetic tests, not product rankings
No actual authorized AI product runs have been performed: products are not yet tested. These deliberately constructed fixtures test the checker’s declared behavior. They carry no model scores, model-run provenance, certification or human-review claims.
Explore all ten tests and download their original filesPrepare a file with CSV Cleanup & Check, or learn the workflow in Clean a messy CSV with AI and Verify AI output.