List preparation tools
Remove accidental duplicate lines, compare registration and invitation lists, and review plain text before a draw or team assignment.
Choose a list task
- Remove repeated entries while keeping the first occurrence: Duplicate Line Remover
- Find shared entries, differences, and a combined unique list: List Comparison
- Clean whitespace in a text block: Whitespace Trimmer
- Review edited text and line changes instead of list membership: Text Diff
Prepare a list before a draw or grouping
Follow a practical example from participant labels and duplicate checks to registration comparison and manual transfer.
Tools
Duplicate Line Remover
Repeated names in a participant list? Paste one entry per line, remove duplicate lines, review repeated entries, and copy or download the cleaned list.
List Comparison
Compare two lists to find shared items, differences, and a combined list without duplicates.
Whitespace Trimmer
Trim leading and trailing spaces, tabs, and line breaks from text. Clean copy for code, CSV, and form inputs with instant client-side processing.
Text Diff Checker
Compare two texts side by side and highlight differences
A practical workflow
Clean and check entries with Duplicate Line Remover → compare invitations and registrations with List Comparison . Copy or export plain lines, then paste them into the draw, grouping, or shuffle tool yourself.
List preparation FAQ
Can identical names represent different people?
Yes. Add distinct participant or ticket IDs before removing duplicates. A text match does not establish that two entries represent the same person.
Do repeated entries count more than once in a comparison?
No. Comparison results are unique sets. A repeated line does not increase intersection, difference, or union counts.
Does opening another tool move my list automatically?
No. Copy the reviewed plain lines or export a text file, then paste the contents into the next tool. Lottery Draw merges identical trimmed entries; grouping and shuffling preserve repeated nonblank lines.