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3. Release 4.1

 Release 4.1
===========

 Released 27th Feb 2026

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**PDF documents** can now be part of your chatbot's knowledge base, so the detail your organisation publishes as files is available in answers alongside your web pages.

Major Features
--------------

### PDF documents in the knowledge base

When your website is crawled, linked PDF files are now read and added to the knowledge base alongside your pages, and the chatbot draws on them in its answers the same way.

[Learn more about how the assistant answers questions](/articles/how-the-assistant-answers-questions)

Minor Features
--------------

#### Logos across the chat window

The launcher button, the chat window header and the chatbot's avatar beside its replies can each carry a logo of your choice.

*Learn more about how the chat window is branded [here](/articles/chat-window-branding).*

#### Websites built as single-page applications

Websites that draw their content with JavaScript, including single-page applications, are now crawled with a full browser, so their pages can be included in the knowledge base.

#### A supportive response to self-harm

When a user's message suggests they may be at risk of self-harm, the chatbot replies with a supportive message pointing to crisis support. The wording can be configured for your service.

*Learn more about [safety guardrails](/articles/safety-guardrails).*

Fixes
-----

- Website content containing special characters and encoded punctuation is captured accurately in the knowledge base.
- The chat window's dark theme displays user messages and the launcher in the intended colours.

   Questions about this release?
-----------------------------

 Many of these changes came from customer feedback. Tell us what you would like next, or let us know if something is not behaving.

 [ Submit a support request ](https://nginx.deploy-lagoon-production.civio-assist-docs.dh1.amazee.io/portal/login) 

 [    Previous release Release 4.0 ](/releases/release-4-0) [  Browse All releases   ](/releases) 

 In this release 

 Release details 

  Released 27th Feb 2026 

 Previous  [ Release 4.0 · 18th Feb 2026 ](/releases/release-4-0)  

 Read more 

- [   Adding the chatbot to your website ](/articles/adding-the-chatbot-to-your-website)
- [   How the assistant answers questions ](/articles/how-the-assistant-answers-questions)
- [   How the chat window is branded ](/articles/chat-window-branding)
- [   Safety guardrails ](/articles/safety-guardrails)

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