docs: Update documentation to reflect 1.31.0 release

Author: baasitsharief

docs/changelog.md

@@ -4,6 +4,7 @@ This changelog summarizes notable changes per tagged release from 1.0.0 through
 
 #### Table of Contents
 
+- [1.31.0](#1310)
 - [1.30.0](#1300)
 - [1.29.0](#1290)
 - [1.28.1](#1281)
@@ -42,6 +43,12 @@ This changelog summarizes notable changes per tagged release from 1.0.0 through
 - [1.1.0](#110)
 - [1.0.0](#100)
 
+## 1.31.0
+
+- Added Excel (.xlsx) file support for document ingestion
+- Enhanced indexing performance for tabular documents (CSV, Excel)
+- Updated dependencies and internal improvements
+
 ## 1.30.0
 
 - Added ChromaDB support

docs/rag-studio-quickstart.md

@@ -44,6 +44,14 @@ Landing Page:
 2. Drag-and-drop or select files, then click **Start Upload**.
 3. Confirm the uploaded files appear in the table.
 
+**Supported Document Formats:**
+
+- **Documents**: PDF (`.pdf`), Word (`.docx`), Markdown (`.md`), Text (`.txt`), HTML (`.html`, with advanced PDF processing)
+- **Spreadsheets**: Excel (`.xlsx`, `.xlsm`, `.xlsb`, `.xls`), OpenDocument (`.ods`), CSV (`.csv`)
+- **Presentations**: PowerPoint (`.pptx`, `.pptm`)
+- **Data**: JSON (`.json`)
+- **Images**: JPEG (`.jpg`, `.jpeg`), PNG (`.png`)
+
 ![manage-tab](images/rag-studio-kb-manage-page.png)
 
 ---

docs/rag-studio-ui-guide.md

@@ -76,6 +76,14 @@ This guide explains how to use RAG Studio entirely from the UI, focusing on navi
 2. Drag-and-drop or select files, then click **Start Upload**.
 3. Use the table to view, delete, or summarize documents (if a summarization model is configured).
 
+**Supported Document Formats:**
+
+- **Documents**: PDF (`.pdf`), Word (`.docx`), Markdown (`.md`), Text (`.txt`), HTML (`.html`, with advanced PDF processing)
+- **Spreadsheets**: Excel (`.xlsx`, `.xlsm`, `.xlsb`, `.xls`), OpenDocument (`.ods`), CSV (`.csv`)
+- **Presentations**: PowerPoint (`.pptx`, `.pptm`)
+- **Data**: JSON (`.json`)
+- **Images**: JPEG (`.jpg`, `.jpeg`), PNG (`.png`)
+
 ![kb-manage](images/rag-studio-kb-manage-page.png)
 
 #### Edit Knowledge Base Settings
@@ -149,6 +157,7 @@ Type a question and send. If no session exists, a new session is created automat
 
 - Drag files anywhere in the chat area; a drop overlay will appear. Drop to upload into the associated knowledge base for the session.
 - Alternatively, open the **Documents** control (paperclip/folder icon) near the input to manage uploads.
+- Supports the same document formats as knowledge base uploads (PDF, Word, Excel, PowerPoint, CSV, JSON, Markdown, Text, Images, and more).
 
 ![documents-icon](images/chat-documents-icon.png)