Observed arrival · 2026-10-24

CalPorter’s calendar-file workbench

calporter.com Visit website

Editorial interest 78/100 Selection signal · not a rating of the site

A browser-based toolkit for inspecting, converting, comparing, cleaning, merging, and splitting ICS and CSV calendar files.

Landing page captured for the 2026-10-24 issue.

For: People handling ICS or CSV calendar exports
Worth noticing: The split tool says it keeps recurring series and their exceptions together; availability exports strip titles, notes, people, locations, links, and reminders.

Field notes

The viewer can start from an example ICS file, a selected file, or pasted text, and the page says it can show event dates, time zones, repeating rules, and warnings. Outputs vary by task: the comparison tool lists JSON, conversions produce ICS or CSV, and splitting produces a ZIP. The homepage states a 10 MB limit for ICS files and says processing stays on the user's device, though that privacy claim is not independently verified by the extracted page evidence.

Observed signals

Read the marks

Editorial observations of this landing page, not a rating.

○OpenPublic substance visible

✦PrettyNotable craft visible

●ProPolished or operationally mature

◎NicheUnusually specific use

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