Live Webinar Chat for Your Website

Everything You Need, Before, During, and After

Most platforms make you choose between their chat and their ecosystem. FastComments is a standalone widget you embed on your own page - with full control at every stage of the event.

BEFORE

Set the Stage

SSO & Guest Access

Connect your identity provider via SSO or SAML so attendees use their existing accounts on your site. Or allow anonymous guest posting with just a display name - no signup friction.

Custom Branding

Inject custom CSS to match your site. Change colors, fonts, input styles, and avatar shapes. White-label removes the FastComments name entirely - it looks like part of your product.

Pre-set Moderation Rules

Define keyword blocklists, enable ML-based spam detection, and set rate limits before the event starts. When the webinar goes live, moderation is already running.

Team Roles & Permissions

Invite moderators, assign them to specific pages, and control what each role can do: approve comments, ban users, pin messages, or view analytics.

DURING

Run It Live

Real-Time Chat

Messages deliver in under one second worldwide through edge nodes on multiple continents. WebSocket-based pub/sub handles 100,000+ concurrent connections without degradation.

Q&A with Voting

Attendees upvote questions they want answered. Moderators pin top questions and mark them answered. The audience decides what gets attention, not just who types fastest.

Live Moderation Dashboard

One-click approve, hide, or ban. Bulk-select messages during high-volume moments. Assign multiple moderators so no one person has to monitor the entire chat alone.

Pin Important Messages

Pin announcements, key links, or top questions so they stay visible at the top of the chat as new messages scroll past.

AFTER

Measure & Follow Up

Engagement Analytics

See total comment volume, unique participants, sentiment breakdown, and engagement over time. Identify which moments in the webinar drove the most audience interaction.

Export Comments

Download all questions and comments as CSV or JSON. Use exports for post-event reports, to surface unanswered questions, or to feed leads into your CRM.

Webhook Integrations

Forward new comments to Slack, Zapier, Make, or any webhook endpoint in real time. Trigger CRM updates, support tickets, or email follow-ups automatically.

Comments Stay After the Event

Chat and Q&A data persists on your page permanently. Viewers watching the recording see the original discussion right where it happened. Nothing disappears when the stream ends.

Enterprise-Ready Security & Compliance

Data Residency

EU-only deployment available at eu.fastcomments.com. Data stays within the EU. Choose the deployment that matches your regulatory requirements.

SSO & SAML

Integrate with your identity provider via SAML or secure SSO. LTI support for Canvas and other LMS platforms. Users authenticate with your system - no separate account needed.

Spam & Abuse Protection

ML-powered spam classifier trained on your data, configurable keyword blocklists, IP banning, and per-user rate limiting. Multiple layers running simultaneously.

Privacy Controls

GDPR compliant. No tracking cookies. No third-party ad scripts. Full data export and deletion on request. Your audience's data is not monetized.

Why Not Just Send Them Somewhere Else?

When you redirect your audience to Zoom, YouTube, or a third-party event platform, you give up control. They leave your site, see someone else's branding, and you lose the data. FastComments keeps everything on your domain.

Your Audience Stays on Your Site

No redirects to external platforms. Attendees watch, chat, and ask questions on your domain. You keep the traffic, the engagement, and the SEO value.

Your Brand, Not Theirs

Custom CSS and white-labeling. The chat widget looks like part of your site, not a third-party embed. Attendees see your brand throughout the event.

One Script Tag to Embed

Drop a script tag on your webinar page. The widget renders inline, next to or below your video player. Works with any site, any stack, any CMS.

Moderation You Control

Third-party platforms give you basic hide and block. FastComments gives you keyword auto-filters, ML spam detection, bulk moderation, multiple moderator roles, and full audit logs.

You Own the Data

Every comment and question lives in your FastComments account. Export as CSV or JSON anytime. Forward events via webhooks. Switch video tools without losing your Q&A history.

Works on Any Device

The widget is fully responsive. Attendees on phones, tablets, and desktops get the same experience without downloading an app or leaving your page.

Frequently Asked Questions

We've compiled answers to some of the most common questions to help you get started.!

How does FastComments handle 100,000+ concurrent viewers?

FastComments uses WebSocket-based pub/sub messaging with edge nodes on multiple continents. Messages are broadcast in real time with no polling. For rooms above 10,000 concurrent users, the system automatically adapts its delivery method to maintain sub-second latency. For rooms above 100,000, it shifts to an optimized polling mode. This happens transparently - attendees see no change in performance.

Can attendees chat without creating an account?

Yes. You have three identity modes. Anonymous guest posting lets attendees chat with no signup at all. Named guest posting asks for a display name but no email or password. Authenticated access via SSO ties chat participation to your existing user accounts. You configure which mode to use per page or per event.

How do I moderate chat during a live webinar?

Automated moderation runs before any message reaches the audience: keyword blocklists catch known bad words, and an ML spam classifier flags suspicious content. For manual moderation, your team can approve, hide, or ban users with one click. You can assign multiple moderators to share the workload, each with configurable permissions. Rate limiting prevents any single user from flooding the chat.

Can attendees upvote questions during the webinar?

Yes. The voting system lets attendees upvote questions, surfacing the ones most people want answered. Moderators can pin questions to the top of the feed and post threaded replies. Pinned and top-voted questions stay visible even as new messages arrive, so your presenter can address what matters most to the audience.

What video players and platforms does FastComments work with?

FastComments is a JavaScript widget that runs on your webpage. It embeds alongside any video player: YouTube embeds, Vimeo embeds, Wistia, JW Player, HTML5 video, or any custom player. It also works with React, Vue, Angular, WordPress, and LMS platforms like Canvas. As long as the page can load a script tag, FastComments works.

What happens to the chat after the webinar ends?

Comments and Q&A data persist permanently on your page. When you replace the live stream with a recording, the original chat remains visible next to it. Viewers watching the replay can read all the questions and answers from the live session. If you use a new URL for each webinar, each event gets a fresh comment thread automatically. If you reuse the same URL, you can bulk delete the previous comments to start clean. You can also export everything as CSV or JSON, or push data to external tools via webhooks and Zapier.

Is FastComments GDPR compliant?

Yes. FastComments offers an EU-only deployment at eu.fastcomments.com where all data stays within the European Union. The widget does not use tracking cookies or load third-party advertising scripts. Full data export and deletion is available on request for data subject access requests. With SSO, user identity data stays in your system, not ours.

How much does FastComments cost for large webinars?

FastComments bills based on page loads and comment volume, not per viewer. A webinar with 50,000 attendees costs the same as one with 500 if the page load volume is within your plan. There are no per-seat charges for participants. This makes costs predictable for recurring events. View current pricing.

Your Webinar. Your Website. Your Audience.