calendr.events

Organize / calendar toolbox

Calendar Diff

Compare added, removed and semantically changed calendar events.

Processed in your browser

Opening your local workspace…

How it works.

  1. 01Choose an original and a comparison calendar.
  2. 02Inspect added, removed and changed event identities.
  3. 03Review changed properties and download the comparison report if needed.

The important details.

Comparisons use UID plus RECURRENCE-ID and semantic property trees rather than byte-level line folding differences.

A good question.

Will reordering lines show false changes?

Equivalent property ordering/folding is normalized where practical; actual property changes remain visible.

Keep going.

All tools →

Open & edit

Calendar Editor

Add, edit and delete events, then download your updated calendar.

Organize

Smart Merge + Deduplicate

Combine files with explicit exact-duplicate and revision handling.

Organize

Conflict Checker

Find overlapping events and recurring instances within a finite window.

Your file stays in this browser tab. No account, no calendar upload, no calendar-content storage. Read our privacy approach.