Find duplicate line groups with exact source positions and original values. Choose line, case and whitespace policies and export a complete review report.
Choose your path
Find repeated line comparison keys with explicit boundary, normalization, empty-record and case policies while retaining original lines and all occurrence positions.
Find repeated literal records including special object-key text.
Analyze repeated __proto__, constructor and ordinary log lines; inspect occurrence counts and line numbers.
Literal text is counted safely and each occurrence remains traceable.
Decide whether case, edge spaces or canonical forms should be equivalent.
Compare exact mode with ASCII edge trim, lowercase and NFC; review original variants.
Comparison changes never erase evidence or automatically delete rows.
Handle CRLF, lone CR, terminal records and large results predictably.
Import a BOM/CRLF fixture, choose delimiter/final-empty policy, page groups and export all positions.
Can explain record totals and retain every original occurrence.
Outputs and checklists are planning aids. Review the linked current authorities and the records, terms, instructions, and requirements that apply to your exact situation before a consequential decision.
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Default delimiters are CRLF, LF and lone CR. Unicode mode additionally recognizes NEL, LS and PS. A final delimiter can add an explicitly included empty record.
Optional ASCII edge trim, NFC and default lowercase affect keys only. Empty-key exclusion runs after those choices; BOM and non-ASCII spaces are preserved.
Each group retains all original values and one-based line numbers. Group count, total repeated occurrences and excess occurrences are distinct metrics.
Updated: August 2026
Find repeated literal records including special object-key text. Analyze repeated __proto__, constructor and ordinary log lines; inspect occurrence counts and line numbers.
Decide whether case, edge spaces or canonical forms should be equivalent. Compare exact mode with ASCII edge trim, lowercase and NFC; review original variants.
Handle CRLF, lone CR, terminal records and large results predictably. Import a BOM/CRLF fixture, choose delimiter/final-empty policy, page groups and export all positions.
Three identical lines form one group with three occurrences and two extras after the first.
Inspect the original values; normalization and lowercase can merge distinct strings.
Find repeated line comparison keys with explicit boundary, normalization, empty-record and case policies while retaining original lines and all occurrence positions.