A chat widget that fits your site
One script tag puts live chat on every page. Your team and an AI agent answer from one inbox.
One chat widget, every website builder
The same snippet everywhere. Each guide shows where it goes.
Everything your chat widget should do
Support, capture and engage visitors, on any page of your site.
Answers from your own content and hands the conversation to a person when it is unsure.
- Trained on your docs
- Hands off to a person
- Your own instructions
Your brand, down to the corner radius
What you see here is what visitors get.
Open the widget builder
Nova
A live preview. Nothing here is saved; these settings live in Settings, then Branding.
Full screen on every phone
On a small screen the chat takes the whole page, the way an app would.
A close button in reach
The chat covers the launcher, so its header carries a close button of its own.
Back closes the chat
The phone's Back button closes the chat instead of leaving your page, and the page behind stays put.
Stays above the keyboard
The message box stays on screen when the keyboard opens, clear of the notch and the home bar.
Every chat lands in one inbox
Visitors chat in the widget. Your team and the AI agent answer from a shared inbox.
Every chat arrives in the inbox the moment it starts. You see the visitor typing, with no refresh.
- See them typing
- Slack and Teams alerts
- Desktop and mobile apps
What is a website chat widget?
The chat button in the corner of a page. Visitors ask, and get a reply without leaving.
- Chat widget
- The launcher and panel on your site. The visitor's side of the conversation.
- On every page
- Text, files, voice
- Live chat software
- The inbox behind it, where your team reads and answers in real time.
- One inbox
- Every teammate
- Chatbot
- Automated replies inside the widget, written from your own content.
- Your docs
- Hands off
Sellio is all three, in one product
What to look for in a chat widget
Eight things that decide whether visitors use it or close it.
Loads after your page
An async script that never blocks rendering. The panel loads only when someone opens it.
Matches your brand
Colors, launcher, position, greeting and a dark mode that follows the visitor.
Asks before it answers
A pre-chat form for name, email or order number, so the first reply has context.
Takes more than text
Screenshots, files and emoji in the thread, plus a mic that types what the visitor says.
AI with a way out
An agent that answers from your docs and hands over the moment it is unsure.
Proves who is chatting
HMAC-signed identity for signed-in users, so nobody can pose as a customer.
Talks to your code
A JavaScript API to open, close, set the visitor and listen for events.
Speaks their language
English, French, German, Spanish, Arabic with right-to-left, Japanese and Korean.
Live on your site in minutes
One script tag, pasted once. No plugin to keep updated.
- 01
Copy the snippet
Open Settings, then Install. It already carries your workspace's widget key.
- 02
Paste it once
Into your site's head or shared layout, so every page gets the launcher.
- 03
Make it yours
Set your colors, greeting and hours, then add an AI agent.
Control the widget from your own code
A few lines for the things customers ask for most.
A Help link in your menu or a Contact us button can open the chat, so the launcher is not the only way in.
Sellio beside Tidio and tawk.to
Popular website chat tools. The differences are AI billing, channels and price.
| Feature |  Sellio |  Tidio |  tawk.to |
|---|---|---|---|
| Five seats, per month | $20/mo (Mini) | $49/mo+ (Growth) | $58/mo+ (Free + add-ons) |
| Pricing model | Per workspace. Per workspace; seats and channels are plan limits | By conversations. By billable conversations; AI by conversation packs. | Free, paid add-ons. Free chat; add-ons per feature. |
| Free plan | 2 seats, no clock. 2 seats, 1 channel, 1 AI agent, no trial clock | 50 chats a month. 50 conversations a month, 10 seats. | Unlimited agents. Unlimited agents. |
From Mini. From Mini: WhatsApp Business API, several agents on one number | Paid plans. Paid plans. | In beta. Messaging channels in beta. | |
| Instagram DMs | From Mini. From Mini: Instagram DMs beside web chat | Paid plans. Paid plans. | In beta. Messaging channels in beta. |
| AI agent trained on your docs | Trained on your docs. Crawl your site, upload PDFs and FAQs; answers only from those | Lyro. Lyro, trained on your site and FAQs. | AI Assist add-on. AI Assist from $29/mo, trained on the knowledge base. |
| How AI is billed | Metered, with caps. Metered from an included credit, with caps you set | From $32.50/mo. From $32.50/mo for 50 conversations. | From $29/mo. Add-on subscription. |
| AI hands off to a person | When unsure, or on request. On low confidence, a keyword, or a teammate taking over | To an operator. Lyro hands to an operator. | Hands to agents. Hands to agents. |
| Analytics and CSAT | From Essentials. From Essentials: response times, resolution, CSAT; topics and email reports on Essentials | Growth and up. Analytics on Growth and up. | Basic reporting. Basic reporting. |
| Full comparison | Sellio vs Tidio | Sellio vs tawk.to |
Start small, $20 when you grow
The widget and the inbox are free for a small team. Paid plans add seats, channels and AI credits.
Shared inbox and website chat, with AI.
Key features included:
- AIAI chatbot for website chat
- AIKnowledge base
- Shared inbox
- Website chat widget
AI agents and automations for small teams.
All the free features, plus:
- Omnichannel inbox
- Routing rules & Assignment
- Chat triggers
- Workflow automation builder
Voice replies from Essentials; the widget without Sellio's name on Plus. See every plan
Chat widget questions
Straight answers about speed, frameworks, the free plan, the API and mobile.
A chat widget is the small launcher in the corner of a website that opens a conversation with your team.
Sellio's widget is one script tag. Visitors click the launcher, type a message, and it lands in your shared inbox. Each conversation carries context: the page the visitor was on, their browser and their details. Replies appear in real time. Your answer shows in the widget without a page refresh.
The install steps are in the installation docs.
One script tag. Every visitor answered.
Put a chat widget on your site that matches your brand, keeps your pages fast, and sends every conversation to one inbox your team can work from.
No credit card required