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XUL to ICS Converter — Free, Online, No Signup

Convert XUL files to ICS online with no signup required.

XUL at a glance

XUL

Legacy Firefox/Mozilla application development, XUL extension migration to WebExtensions, and Mozilla platform interface documentation.

ICS at a glance

ICS

Convert to ICS when the output needs to be imported into calendar software, sent as an invite, published as a subscribable event feed, or exchanged between scheduling systems.

It is ideal for appointments, event series, meeting notices, and automated calendar workflows.

Use it when time and recurrence semantics matter more than generic document presentation.

Format comparison

Feature
XUL
ICS
File type

Document

Other

Extensions
  • .xul

  • .ics

MIME type
  • application/vnd.mozilla.xul+xml

  • text/calendar

Compression / quality

depends

depends

File size characteristics

medium

depends

Compatibility

broad

moderate

Editability

moderate

moderate

Created year

1999

1998

Inventor

Mozilla (David Hyatt, others)

IETF

Status

legacy

active

Primary use cases
  • authoring

  • review and collaboration

  • distribution

  • xbl

  • html

  • xhtml

  • xml

  • system exchange

  • automation

  • specialized interoperability

  • vcf

  • json

Common software
  • Firefox legacy UI

  • XULRunner

  • legacy Mozilla extensions

  • Pale Moon and related forks

  • Google Calendar

  • Apple Calendar

  • Outlook

Archival suitability

strong

moderate

Metadata handling

moderate

moderate

Delivery profile

strong

moderate

Workflow fit

exchange

exchange

Vector scaling

Not supported

Not supported

Reflowable text

Not supported

Not supported

Structured data

Supported

Supported

When to use each format

When to use XUL

  • authoring
  • review and collaboration
  • distribution
  • Enabled declarative cross-platform UI construction inside the Mozilla ecosystem.

When to use ICS

  • system exchange
  • automation
  • specialized interoperability
  • Strong ecosystem support across calendar clients.

FAQs

Why convert XUL to ICS?

Convert to ICS when the output needs to be imported into calendar software, sent as an invite, published as a subscribable event feed, or exchanged between scheduling systems.

It is ideal for appointments, event series, meeting notices, and automated calendar workflows.

Use it when time and recurrence semantics matter more than generic document presentation.

What changes when converting XUL to ICS?

This conversion changes how the format behaves in downstream tools and delivery environments.

Size profile changes from medium in XUL to depends in ICS. Compatibility profile changes from broad in XUL to moderate in ICS. Archival profile changes from strong in XUL to moderate in ICS. Delivery profile changes from strong in XUL to moderate in ICS.

What should I review after converting XUL to ICS?

Check the exported file for Timezone and recurrence edge cases still need careful validation.; Text-level edits can easily break semantic correctness..

Format resources

XULICS

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