SampleTestFiles

10 KB ICS sample file

An ICS file of exactly 10,240 bytes. It is a valid iCalendar file file, generated for this site and checked with an independent parser.

Download

sample-ics-10kb.ics

10 KB10,240 bytes

Download 10 KB ICS

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Type
text/calendar
SHA-256
2cd082e9cc52db15bf91e25ceb83abde0d2361c1997fd097c075d2e0c481f63c
Direct URL
https://sampletestfiles.com/downloads/ics/sample-ics-10kb.ics

What is in this file

A VCALENDAR object with 29 VEVENT components, each with a unique UID, start and end times, a summary, a description and a location. Non-standard X- property lines, which calendar software ignores, bring the file to the exact size.

Events29
iCalendar version2.0
Time zoneUTC
Line endingsCRLF, folded at 75 octets
EncodingUTF-8 (ASCII characters only)

How the file begins

The opening lines of sample-ics-10kb.ics, exactly as they appear in the file.

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//SampleTestFiles//Sample Calendar//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VEVENT
UID:a6cf3b6b-cd57-4173-a942-a2339c75f449@example.com
DTSTAMP:20260101T000000Z
DTSTART:20260105T090000Z
DTEND:20260105T100000Z
SUMMARY:Review meeting 1 with Ethan Zeller
DESCRIPTION:This sample file exists so that software can be tested with rea
 listic input.
LOCATION:Pune\, IN

Preview

Shows the file contents.

Where 10 KB matters

A 10,240-byte file that still arrives in the first round trip of a new connection. These are the default limits a file of this size is useful for testing:

SystemLimitNote
TCP initial congestion windowAbout 14.6 KB (10 segments)A 10 KB response fits in the first flight of packets; the 25 KB sample does not.
nginx and Apache request headers8 KB per header line by defaultData this large must go in the request body.
webpack asset modules8 KB by defaultAssets over the threshold are emitted as files instead of data URIs.

All 10 KB sample files

Use this file for

  • Checking thumbnail and icon handling
  • Testing invitation processing
  • Testing calendar import and subscription

Testing notes for ICS

  • Time zones and recurrence rules are where calendar software fails. The samples use UTC and non-recurring events, so they work as a known-good baseline.
  • Importing the same UID twice should update an event, not duplicate it.

ICS format reference

Technical details

File namesample-ics-10kb.ics
FormatICS (iCalendar file)
Extension.ics
MIME typetext/calendar
Size10,240 bytes (10 KB)
KindText
SHA-2562cd082e9cc52db15bf91e25ceb83abde0d2361c1997fd097c075d2e0c481f63c
Created2026-10-10
ValidationExact size, signature bytes and structure checked when the file was generated
PreviewAvailable on this page
SourceGenerated for this site; not copied from elsewhere
LicenceFree to use, modify and redistribute (terms)
CategoryEmail & Calendar

Validated for expected format and integrity. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Download from the command line and verify

Fetch the file with curl, then compare its checksum with the SHA-256 value above.

curl -o sample-ics-10kb.ics 'https://sampletestfiles.com/downloads/ics/sample-ics-10kb.ics'
sha256sum sample-ics-10kb.ics     # Linux
shasum -a 256 sample-ics-10kb.ics # macOS

On Windows, run Get-FileHash sample-ics-10kb.ics -Algorithm SHA256 in PowerShell. A matching value proves that the download is complete and unaltered.

Related files

Other ICS sizes

Other 10 KB files

Use cases

Guides

Questions about this file

Is this file exactly 10 KB?
Yes. It is 10,240 bytes, which is 10 KB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 10 KB ICS file?
A VCALENDAR object with 29 VEVENT components, each with a unique UID, start and end times, a summary, a description and a location. Non-standard X- property lines, which calendar software ignores, bring the file to the exact size.
Do the events repeat?
No. Each event is a single one-hour meeting in UTC with its own UID.