Which calendar platforms are supported?

We support direct shareable web links for Google Calendar, Outlook Live/Web, Yahoo Calendar, and an offline-compatible standard iCal (.ics) file download.

How does the iCal (.ics) export work?

The tool compiles your event details into a standard text stream matching RFC 5545 specifications, and builds a local Blob url for instant secure downloads.

Can I customize the timezone for the event?

Yes, you can set the start and end times in local time or select UTC, and the generator handles offset translations dynamically.

Is there any character limit for descriptions?

Standard calendar URLs have maximum browser string lengths around 2,000 characters, so keep description summaries brief for the web links.

Do my event details get uploaded to any servers?

No. All links are structured purely client-side via JavaScript query parameters, and the iCal file is built in browser active memory.

Add to Calendar Link Generator — Google, Outlook, Yahoo & iCal

Add to Calendar Link Generator — Google, Outlook, Yahoo & iCal Event Builder

Our **Add to Calendar Link Generator** is a local-first event publishing utility designed to help marketers, event coordinators, and developers distribute calendar subscription links without requiring server-side integrations. Enter your event name, date, time, location, and description once — the tool compiles instant clickable links for Google Calendar, Outlook Web, Yahoo Calendar, and generates standard RFC 5545-compliant iCal (.ics) file downloads. All URL encoding happens offline inside your browser, keeping event schedules completely private.

How to Generate Calendar Subscription Links

Enter Event Name — Type your event title (e.g., "Product Launch Webinar" or "Team Kickoff Meeting") into the event name field.
Set Date & Time — Select the start and end date/time using the interactive date pickers. Toggle "All Day Event" to skip time configuration.
Add Location & Description — Fill in venue name, video conference URL, or physical address alongside a rich event description.
Configure Timezone — Select your target timezone to ensure the event shows correctly for international attendees.
Copy Links or Download iCal — Click to copy the Google Calendar, Outlook, or Yahoo links, or download the universal .ics file for native calendar apps.

Comparing Calendar Link Builders

See how SimplyUtils' offline-first event link generator compares with server-dependent alternatives:

Capability

SimplyUtils

AddToCalendar.com

Manual URL Construction

Google + Outlook + Yahoo Links

✓

✗ (one at a time)

RFC 5545 iCal (.ics) Download

✓

✗

100% Offline Client-Side Privacy

✓

✗ (stores event data)

✓

Timezone-Aware Event Encoding

✓

✗ (error-prone)

Zero Ads & No Sign-Up Required

✓

✗

✓

Calendar Platform URL Parameter Specifications

Understand how each platform encodes event data into its URL structure:

Platform

Date Format

Timezone Handling

Supports Description

Max URL Length

Google Calendar

YYYYMMDDTHHmmssZ

UTC offset or named timezone

✓

~8,000 chars

Outlook Web

YYYY-MM-DDTHH:mm:ss

startTimeZone parameter

✓

~2,048 chars

Yahoo Calendar

YYYYMMDDTHHmmss

UTC only

✓

~2,048 chars

iCal (.ics)

RFC 5545 DTSTART

TZID property or Z suffix

✓

No limit (file)

Target Personas & Event Use Cases

1. Email Marketers & Newsletter Publishers

Embed "Add to Calendar" buttons directly in campaign emails so subscribers can one-click add your webinar, product launch, or sale event to their preferred calendar without friction.

2. Event Planners & Conference Organizers

Generate multi-platform links for conference sessions, workshops, and breakout rooms. Share a single iCal file import link that works across Apple Calendar, Outlook Desktop, and Google Calendar.

3. SaaS & Startup Product Teams

Add calendar links to product launch landing pages, demo booking confirmations, and feature announcement emails to drive attendance rates.

4. HR & Internal Communication Teams

Distribute all-hands meeting invites, company holiday schedules, and onboarding session links as universal .ics downloads for employees across different calendar platforms.

5. Developers & Technical Writers

Quickly prototype event reminder integrations by testing URL encoding parameters before building custom calendar link generators into web applications.

Frequently Asked Questions

What is an iCal (.ics) file and which apps support it?

An .ics file follows the RFC 5545 iCalendar standard — a universal format supported by Apple Calendar, Microsoft Outlook (desktop), Google Calendar, Thunderbird, and virtually all modern calendar applications on iOS, Android, Windows, and macOS.

How does the timezone handling work?

When you select a timezone, the tool converts your local date/time to UTC for platforms that require it (Yahoo), or appends TZID parameters for platforms that support named timezones (Google, iCal). This ensures attendees in different regions see the correct local start time.

Can I include a video conference URL in the event?

Yes — paste your Zoom, Google Meet, Teams, or WebEx URL into the Location or Description field. Most calendar apps will display clickable links from the description field, making it easy for attendees to join virtually.

Is my event data stored or transmitted anywhere?

No. All URL encoding and .ics file generation happens entirely in your browser using JavaScript. SimplyUtils never receives, stores, or transmits your event details, attendee lists, or location data.

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Strict Local Sandbox Security: All calendar link construction and iCal file generation runs entirely in your browser. Your event data is never uploaded or stored.