Find What's Missing Between Lists

Spot items in one checklist that are absent from another.

Nid oes angen mewngofnodi

List A (0 lines)

List B (0 lines)

Trim whitespaceIgnore case

— no items —

💡 Paste a list in each box (one item per line). Only in A = items missing from B · In both = the overlap · Only in B = items missing from A · All (unique) = combined, de-duplicated. Everything runs in your browser.

checklists tips

✅

"Only in A" shows what's in your reference list but missing from the other.

🔍

Useful for reconciling inventory, attendance, or task lists.

🧹

Trim and ignore-case options prevent formatting quirks from hiding matches.

🔒

Nothing is uploaded.

Sut Mae'n Gweithio

Ewch i mewn

Enter your data into the tool above. Everything stays local to your browser.

Proses

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Lawrlwythwch

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Pam defnyddio ein un ni?

✓Hollol rhad ac am ddim - dim costau cudd, byth

✓Nid oes angen cyfrif, e-bost na mewngofnodi

✓Nid yw ffeiliau byth yn gadael eich dyfais

✓Dim cyfyngiadau maint ffeil o gwbl

✓Dim dyfrnodau ar unrhyw allbwn

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🔗

Find the Overlap Between Two Lists

See which items appear in both lists (the intersec

Cwestiynau Cyffredin

Back to Compare Two Lists