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View a ICALENDAR file online, free

View and format .ICALENDAR files online. Pretty-print, search and explore the data as a table or tree, free.

Drop your .ICALENDAR file here

Opens your .ICALENDAR file right here.

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Up to 50 MB · JSON, XML, YAML, TOML, INI
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How to open a JSON file online

Three steps, a few seconds, no software.

01

Open your .ICALENDAR file

Drop it on the box, choose it from your device, or paste the data straight in.

02

View the structure

Your .ICALENDAR file opens as a tidy, foldable tree, with the exact line of any error pointed out.

03

Search, copy or download

Search keys and values, copy any path or value, switch to a table, or download a clean copy.

What is a .ICALENDAR file?

The most common data format on the web.

A .icalendar file is a calendar data file in the iCalendar format (RFC 5545), identical in content to the more common .ics extension. Double-click to import into Outlook, Apple Calendar, or Google Calendar. If the app refuses it, rename the file from .icalendar to .ics; that fixes the problem in every case.

Programs that open .ICALENDAR files

Windows
Microsoft Outlook, Mozilla Thunderbird, Windows Calendar (built-in)
macOS
Apple Calendar
Linux
GNOME Calendar / Evolution
Android
Google Calendar (via web import)
iOS
Apple Calendar
Web
Google Calendar, Outlook on the web
.ICALENDAR format details
Full nameiCalendar File
DeveloperIETF (RFC 5545); originally Internet Mail Consortium
First released1998 (RFC 2445)
CategoryText & Code
MIME typetext/calendar

Related viewers

Every viewer is free to use.

Frequently asked questions

Is my .ICALENDAR file uploaded anywhere?

No. The file is opened directly from the copy you pick.

My .ICALENDAR file is invalid. Can you fix it?

We show the exact line and column of the first error. For common problems like comments, trailing commas, single quotes or Python-style True/False/None, click Try to repair and download the fixed file.

How large can the file be?

Up to 50 MB. The tree only builds the branches you open, so even multi-megabyte files stay responsive.

What is JSONPath?

A path like $.orders[3].customer.email that points to one value inside the data. Click any node to see its path and copy it for code, jq or your API docs.

Can I see my data as a table?

Yes. Any array of objects can be shown in the Table view and downloaded as CSV.

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