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Rhad ac am ddim Duplicate Line Finder

Find, count, or remove duplicate lines from a list. Great for cleaning up email lists, audit logs, or finding repeat entries in data dumps.

Runs in your browserNo sign-up, no pop-upsNid oes angen mewngofnodiAm ddim am byth

Ignore caseTrim whitespaceIgnore empty lines

Input (one item per line)

Occurrence counts

Output will appear here…

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Ewch i mewn

Rhowch eich testun neu ddata.

Proses

Wedi'i brosesu ar unwaith yn eich porwr. Dim gweinydd, dim aros.

Lawrlwythwch

Arbedwch eich canlyniad. Nid oes dim yn cael ei storio.

✓Completely free — no hidden costs, ever

✓No account, email, or login required

✓Runs entirely in your browser — no uploads

✓Works on any device — phone, tablet, desktop

✓Open and ad-supported, with no tracking

✓Loads fast, with no installation needed

Cyfrif geiriau, cymeriadau, brawddegau, a pharagraffau. Amcangyfrif amser darllen.

Trosi testun i UPPERCASE, llythrennau bach, Achos Teitl, camelCase, snake_case, a mwy.

Fformatio, dilysu, lleihau, ac archwilio data JSON. Gweld coed, amlygu cystrawen, a chopi un clic.

Oedd yr offeryn hwn yn ddefnyddiol?