Commit

multipart_downloader.py

@@ -5,6 +5,7 @@ import hashlib
 import http.client
 import traceback
 import threading
+import queue # Import the missing 'queue' module
 from concurrent.futures import ThreadPoolExecutor, as_completed
 
 CHUNK_DOWNLOAD_RETRY_DELAY = 2 # Slightly reduced for faster retries if needed
@@ -13,7 +14,7 @@ DOWNLOAD_CHUNK_SIZE_ITER = 1024 * 256  # 256KB for iter_content within a chunk d
 
 
 def _download_individual_chunk(chunk_url, temp_file_path, start_byte, end_byte, headers,
-                               part_num, total_parts, progress_data, cancellation_event, skip_event,
+                               part_num, total_parts, progress_data, cancellation_event, skip_event, pause_event, global_emit_time_ref, cookies_for_chunk, # Added cookies_for_chunk
                                logger_func, emitter=None, api_original_filename=None): # Renamed logger, signals to emitter
     """Downloads a single chunk of a file and writes it to the temp file."""
     if cancellation_event and cancellation_event.is_set():
@@ -23,22 +24,23 @@ def _download_individual_chunk(chunk_url, temp_file_path, start_byte, end_byte,
         logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Skip event triggered before start.")
         return 0, False
 
+    if pause_event and pause_event.is_set():
+        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Download paused before start...")
+        while pause_event.is_set():
+            if cancellation_event and cancellation_event.is_set():
+                logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Download cancelled while paused.")
+                return 0, False
+            time.sleep(0.2) # Shorter sleep for responsive resume
+        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Download resumed.")
+
     chunk_headers = headers.copy()
-    # end_byte can be -1 for 0-byte files, meaning download from start_byte to end of file (which is start_byte itself)
     if end_byte != -1 : # For 0-byte files, end_byte might be -1, Range header should not be set or be 0-0
         chunk_headers['Range'] = f"bytes={start_byte}-{end_byte}"
     elif start_byte == 0 and end_byte == -1: # Specifically for 0-byte files
-        # Some servers might not like Range: bytes=0--1.
-        # For a 0-byte file, we might not even need a range header, or Range: bytes=0-0
-        # Let's try without for 0-byte, or rely on server to handle 0-0 if Content-Length was 0.
-        # If Content-Length was 0, the main function might handle it directly.
-        # This chunking logic is primarily for files > 0 bytes.
-        # For now, if end_byte is -1, it implies a 0-byte file, so we expect 0 bytes.
         pass
 
 
     bytes_this_chunk = 0
-    last_progress_emit_time_for_chunk = time.time()
     last_speed_calc_time = time.time()
     bytes_at_last_speed_calc = 0
 
@@ -49,23 +51,25 @@ def _download_individual_chunk(chunk_url, temp_file_path, start_byte, end_byte,
         if skip_event and skip_event.is_set():
             logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Skip event during retry loop.")
             return bytes_this_chunk, False
+        if pause_event and pause_event.is_set():
+            logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Paused during retry loop...")
+            while pause_event.is_set():
+                if cancellation_event and cancellation_event.is_set():
+                    logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Cancelled while paused in retry loop.")
+                    return bytes_this_chunk, False
+                time.sleep(0.2)
+            logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Resumed from retry loop pause.")
 
         try:
             if attempt > 0:
                 logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Retrying download (Attempt {attempt}/{MAX_CHUNK_DOWNLOAD_RETRIES})...")
                 time.sleep(CHUNK_DOWNLOAD_RETRY_DELAY * (2 ** (attempt - 1)))
-                # Reset speed calculation on retry
                 last_speed_calc_time = time.time()
                 bytes_at_last_speed_calc = bytes_this_chunk # Current progress of this chunk
-            
-            # Enhanced log message for chunk start
             log_msg = f"   🚀 [Chunk {part_num + 1}/{total_parts}] Starting download: bytes {start_byte}-{end_byte if end_byte != -1 else 'EOF'}"
             logger_func(log_msg)
-            print(f"DEBUG_MULTIPART: {log_msg}") # Direct console print for debugging
-            response = requests.get(chunk_url, headers=chunk_headers, timeout=(10, 120), stream=True)
+            response = requests.get(chunk_url, headers=chunk_headers, timeout=(10, 120), stream=True, cookies=cookies_for_chunk)
             response.raise_for_status()
-
-            # For 0-byte files, if end_byte was -1, we expect 0 content.
             if start_byte == 0 and end_byte == -1 and int(response.headers.get('Content-Length', 0)) == 0:
                 logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Confirmed 0-byte file.")
                 with progress_data['lock']:
@@ -82,12 +86,19 @@ def _download_individual_chunk(chunk_url, temp_file_path, start_byte, end_byte,
                     if skip_event and skip_event.is_set():
                         logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Skip event during data iteration.")
                         return bytes_this_chunk, False
+                    if pause_event and pause_event.is_set():
+                        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Paused during data iteration...")
+                        while pause_event.is_set():
+                            if cancellation_event and cancellation_event.is_set():
+                                logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Cancelled while paused in data iteration.")
+                                return bytes_this_chunk, False
+                            time.sleep(0.2)
+                        logger_func(f"   [Chunk {part_num + 1}/{total_parts}] Resumed from data iteration pause.")
                     if data_segment:
                         f.write(data_segment)
                         bytes_this_chunk += len(data_segment)
                         
                         with progress_data['lock']:
-                            # Increment both the chunk's downloaded and the overall downloaded
                             progress_data['total_downloaded_so_far'] += len(data_segment)
                             progress_data['chunks_status'][part_num]['downloaded'] = bytes_this_chunk
                             progress_data['chunks_status'][part_num]['active'] = True
@@ -100,18 +111,13 @@ def _download_individual_chunk(chunk_url, temp_file_path, start_byte, end_byte,
                                 progress_data['chunks_status'][part_num]['speed_bps'] = current_speed_bps
                                 last_speed_calc_time = current_time
                                 bytes_at_last_speed_calc = bytes_this_chunk                            
-
-                            # Emit progress more frequently from within the chunk download
-                            if current_time - last_progress_emit_time_for_chunk > 0.1: # Emit up to 10 times/sec per chunk
-                                if emitter:
-                                    # Ensure we read the latest total downloaded from progress_data
-                                    # Send a copy of the chunks_status list
+                            if emitter and (current_time - global_emit_time_ref[0] > 0.25): # Max ~4Hz for the whole file
+                                global_emit_time_ref[0] = current_time # Update shared last emit time
                                 status_list_copy = [dict(s) for s in progress_data['chunks_status']] # Make a deep enough copy
                                 if isinstance(emitter, queue.Queue):
                                     emitter.put({'type': 'file_progress', 'payload': (api_original_filename, status_list_copy)})
                                 elif hasattr(emitter, 'file_progress_signal'): # PostProcessorSignals-like
                                     emitter.file_progress_signal.emit(api_original_filename, status_list_copy)
-                                last_progress_emit_time_for_chunk = current_time
             return bytes_this_chunk, True
 
         except (requests.exceptions.ConnectionError, requests.exceptions.Timeout, http.client.IncompleteRead) as e:
@@ -125,8 +131,6 @@ def _download_individual_chunk(chunk_url, temp_file_path, start_byte, end_byte,
         except Exception as e:
             logger_func(f"   ❌ [Chunk {part_num + 1}/{total_parts}] Unexpected error: {e}\n{traceback.format_exc(limit=1)}")
             return bytes_this_chunk, False
-
-    # Ensure final status is marked as inactive if loop finishes due to retries
     with progress_data['lock']:
         progress_data['chunks_status'][part_num]['active'] = False
         progress_data['chunks_status'][part_num]['speed_bps'] = 0
@@ -134,7 +138,8 @@ def _download_individual_chunk(chunk_url, temp_file_path, start_byte, end_byte,
 
 
 def download_file_in_parts(file_url, save_path, total_size, num_parts, headers, api_original_filename,
-                           emitter_for_multipart, cancellation_event, skip_event, logger_func): # Renamed signals, logger
+                           emitter_for_multipart, cookies_for_chunk_session, # Added cookies_for_chunk_session
+                           cancellation_event, skip_event, logger_func, pause_event):
     """
     Downloads a file in multiple parts concurrently.
     Returns: (download_successful_flag, downloaded_bytes, calculated_file_hash, temp_file_handle_or_None)
@@ -181,7 +186,8 @@ def download_file_in_parts(file_url, save_path, total_size, num_parts, headers,
             {'id': i, 'downloaded': 0, 'total': chunk_actual_sizes[i] if i < len(chunk_actual_sizes) else 0, 'active': False, 'speed_bps': 0.0}
             for i in range(num_parts)
         ],
-        'lock': threading.Lock()
+        'lock': threading.Lock(),
+        'last_global_emit_time': [time.time()] # Shared mutable for global throttling timestamp
     }
 
     chunk_futures = []
@@ -194,8 +200,8 @@ def download_file_in_parts(file_url, save_path, total_size, num_parts, headers,
             chunk_futures.append(chunk_pool.submit(
                 _download_individual_chunk, chunk_url=file_url, temp_file_path=temp_file_path,
                 start_byte=start, end_byte=end, headers=headers, part_num=i, total_parts=num_parts,
-                progress_data=progress_data, cancellation_event=cancellation_event, skip_event=skip_event,
-                logger_func=logger_func, emitter=emitter_for_multipart, # Pass emitter
+                progress_data=progress_data, cancellation_event=cancellation_event, skip_event=skip_event, global_emit_time_ref=progress_data['last_global_emit_time'],
+                pause_event=pause_event, cookies_for_chunk=cookies_for_chunk_session, logger_func=logger_func, emitter=emitter_for_multipart,
                 api_original_filename=api_original_filename
             ))
 
@@ -209,11 +215,8 @@ def download_file_in_parts(file_url, save_path, total_size, num_parts, headers,
     if cancellation_event and cancellation_event.is_set():
         logger_func(f"   Multi-part download for '{api_original_filename}' cancelled by main event.")
         all_chunks_successful = False
-
-    # Ensure a final progress update is sent with all chunks marked inactive (unless still active due to error)
     if emitter_for_multipart:
         with progress_data['lock']:
-            # Ensure all chunks are marked inactive for the final signal if download didn't fully succeed or was cancelled
             status_list_copy = [dict(s) for s in progress_data['chunks_status']]
             if isinstance(emitter_for_multipart, queue.Queue):
                 emitter_for_multipart.put({'type': 'file_progress', 'payload': (api_original_filename, status_list_copy)})
@@ -227,8 +230,6 @@ def download_file_in_parts(file_url, save_path, total_size, num_parts, headers,
             for buf in iter(lambda: f_hash.read(4096*10), b''): # Read in larger buffers for hashing
                 md5_hasher.update(buf)
         calculated_hash = md5_hasher.hexdigest()
-        # Return an open file handle for the caller to manage (e.g., for compression)
-        # The caller is responsible for closing this handle and renaming/deleting the .part file.
         return True, total_bytes_from_chunks, calculated_hash, open(temp_file_path, 'rb')
     else:
         logger_func(f"   ❌ Multi-part download failed for '{api_original_filename}'. Success: {all_chunks_successful}, Bytes: {total_bytes_from_chunks}/{total_size}. Cleaning up.")

readme.md

@@ -1,17 +1,139 @@
-# Kemono Downloader v3.4.0
+<h1 align="center">Kemono Downloader v4.1.1</h1>
+
+<div align="center">
+  <img src="https://github.com/Yuvi9587/Kemono-Downloader/blob/main/Read.png" alt="Kemono Downloader"/>
+</div>
+
+---
 
 A powerful, feature-rich GUI application for downloading content from **[Kemono.su](https://kemono.su)** and **[Coomer.party](https://coomer.party)**.  
 Built with **PyQt5**, this tool is ideal for users who want deep filtering, customizable folder structures, efficient downloads, and intelligent automation — all within a modern, user-friendly graphical interface.
 
 ---
 
-## ✨ What's New in v3.4.0?
+##  What's New in v4.1.1? - Enhanced Image Discovery & Audio Filtering
+
+Version 4.1.1 brings significant enhancements, including smarter image capture from post content and a dedicated filter mode for audio files.
+
+###  "Scan Content for Images" Feature
+
+- **Enhanced Image Discovery:** A new checkbox, "**Scan Content for Images**," has been added to the UI (grouped with "Download Thumbnails Only" and "Compress Large Images").
+- **How it Works:**
+    - When enabled, the downloader meticulously scans the HTML content of each post's description or body.
+    - It searches for images in two main ways:
+        - **Directly linked absolute URLs** (e.g., `https://externalsite.com/image.png`) that end with a common image extension (jpg, png, gif, etc.).
+        - **Images embedded using HTML `<img>` tags.** The downloader extracts the `src` attribute from these tags and can resolve various path types:
+            - Absolute URLs (e.g., `http://...` or `https://...`)
+            - Protocol-relative URLs (e.g., `//cdn.example.com/image.jpg`)
+            - Root-relative paths (e.g., `/data/user_content/image.gif`), which are resolved against the site's base URL (like `https://kemono.su/data/user_content/image.gif`).
+    - This is particularly useful for capturing images that are part of the post's narrative but not formally listed in the API's file or attachment sections.
+- **Default State:** This option is **unchecked by default**.
+- **Key Interaction with "Download Thumbnails Only":** This new feature works closely with the existing "Download Thumbnails Only" option:
+    - If you enable "Download Thumbnails Only":
+        - The "Scan Content for Images" checkbox will **automatically become checked and disabled** (locked).
+        - The downloader then **exclusively downloads images discovered through the content scan**. Any API-listed thumbnails are bypassed, giving priority to images embedded directly in the post.
+    - If you disable "Download Thumbnails Only":
+        - The "Scan Content for Images" checkbox will become **enabled again and revert to being unchecked**. You can then manually enable it if you wish to scan content without being in thumbnail-only mode.
+
+This feature ensures a more comprehensive download experience, especially for posts where images are integrated directly into the text.
+
+### New "🎧 Only Audio" Filter Mode
+
+Alongside image discovery, v4.1.1 also introduces/enhances a dedicated filter mode for audio enthusiasts:
+
+-   **Focused Audio Downloads:** The "🎧 Only Audio" option in the "Filter Files" radio button group allows you to download exclusively common audio file types. This includes formats like MP3, WAV, FLAC, M4A, OGG, and more.
+-   **Streamlined UI:** When "🎧 Only Audio" mode is active:
+    -   Irrelevant UI options such as the "Skip Scope" button (for word-based post/file skipping) and the "Multi-part Download" toggle are hidden to simplify the interface.
+    -   The "Show External Links in Log" checkbox is automatically disabled, as link extraction is not the focus of this mode.
+-   **Archive Handling:** Unlike the "📦 Only Archives" mode (which disables archive skipping), the "Skip .zip" and "Skip .rar" checkboxes remain enabled and configurable when "🎧 Only Audio" is selected. This gives you the flexibility to also exclude any archives encountered while in audio-only mode if desired.
+-   **Purpose:** This mode is perfect for users who primarily want to collect audio tracks, podcasts, or sound effects from posts without downloading other media types.
 
-This version brings significant enhancements to manga/comic downloading, filtering capabilities, and user experience:
 
 ---
 
-### 📖 Enhanced Manga/Comic Mode
+##  Previous Update: What's New in v4.0.1?
+
+Version 4.0.1 focuses on enhancing access to content and providing even smarter organization:
+
+###  Cookie Management
+
+- **Access Content:** Seamlessly download from Kemono/Coomer as if you were logged in by using your browser's cookies.
+- **Flexible Input:**
+  - Directly paste your cookie string (e.g., `name1=value1; name2=value2`).
+  - Browse and load cookies from a `cookies.txt` file (Netscape format).
+  - Automatic fallback to a `cookies.txt` file in the application directory if "Use Cookie" is enabled and no other source is specified.
+- **Easy Activation:** A simple "Use Cookie" checkbox in the UI controls this feature.
+- *Important Note: Cookie settings (text, file path, and enabled state) are configured per session and are not saved when the application is closed. You will need to re-apply them on each launch if needed.*
+
+---
+
+###  Advanced `Known.txt` and Character Filtering
+
+The `Known.txt` system has been revamped for improved performance and stability. The previous method of handling known names could become resource-intensive with large lists, potentially leading to application slowdowns or crashes. This new, streamlined system offers more direct control and robust organization.
+The `Known.txt` file and the "Filter by Character(s)" input field work together to provide powerful and flexible content organization. The `Known.txt` file itself has a straightforward syntax, while the UI input allows for more complex session-specific grouping and alias definitions that can then be added to `Known.txt`.
+
+**1. `Known.txt` File Syntax (Located in App Directory):**
+
+`Known.txt` stores your persistent list of characters, series, or keywords for folder organization. Each line is an entry:
+
+- **Simple Entries:**
+  - A line like `My Awesome Series` or `Nami`.
+  - **Behavior:** Content matching this term will be saved into a folder named "My Awesome Series" or "Nami" respectively (if "Separate Folders" is enabled).
+
+**2. "Filter by Character(s)" UI Input Field:**
+
+This field allows for dynamic filtering for the current download session and provides options for how new entries are added to `Known.txt`.
+
+- **Standard Names:**
+  - Input: `Nami, Robin`
+  - Session Behavior: Filters for "Nami" OR "Robin". If "Separate Folders" is on, creates folders "Nami" and "Robin".
+  - `Known.txt` Addition: If "Nami" is new and selected for addition in the confirmation dialog, it's added as `Nami` on a new line in `Known.txt`.
+
+- **Grouped Aliases for a Single Character (using `(...)~` syntax):**
+  - Input: `(Boa, Hancock)~`
+  - Meaning: "Boa" and "Hancock" are different names/aliases for the *same character*. The names are listed within parentheses separated by commas (e.g., `name1, alias1, alias2`), and the entire group is followed by a `~` symbol. This is useful when a creator uses different names for the same character.
+  - Session Behavior: Filters for "Boa" OR "Hancock". If "Separate Folders" is on, creates a single folder named "Boa Hancock".
+  - `Known.txt` Addition: If this group is new and selected for addition, it's added to `Known.txt` as a grouped alias entry, typically `(Boa Hancock)`. The first name in the `Known.txt` entry (e.g., "Boa Hancock") becomes the primary folder name.
+
+- **Combined Folder for Distinct Characters (using `(...)` syntax):**
+  - Input: `(Vivi, Uta)`
+  - Meaning: "Vivi" and "Uta" are *distinct characters*, but for this download session, their content should be grouped into a single folder. The names are listed within parentheses separated by commas. This is useful for grouping art of less frequent characters without creating many small individual folders.
+  - Session Behavior: Filters for "Vivi" OR "Uta". If "Separate Folders" is on, creates a single folder named "Vivi Uta".
+  - `Known.txt` Addition: If this "combined group" is new and selected for addition, "Vivi" and "Uta" are added to `Known.txt` as *separate, individual simple entries* on new lines:
+    ```
+    Vivi
+    Uta
+    ```
+    The combined folder "Vivi Uta" is a session-only convenience; `Known.txt` stores them as distinct entities for future individual use.
+
+**3. Interaction with `Known.txt`:**
+
+- **Adding New Names from Filters:** When you use the "Filter by Character(s)" input, if any names or groups are new (not already in `Known.txt`), a dialog will appear after you start the download. This dialog allows you to select which of these new names/groups should be added to `Known.txt`, formatted according to the rules described above.
+- **Intelligent Fallback:** If "Separate Folders by Name/Title" is active, and content doesn't match the "Filter by Character(s)" UI input, the downloader consults your `Known.txt` file for folder naming.
+- **Direct Management:** You can add simple entries directly to `Known.txt` using the list and "Add" button in the UI's `Known.txt` management section. For creating or modifying complex grouped alias entries directly in the file, or for bulk edits, click the "Open Known.txt" button. The application reloads `Known.txt` on startup or before a download process begins.
+- **Using Known Names to Populate Filters (via "Add to Filter" Button):**
+  - Next to the "Add" button in the `Known.txt` management section, a "⤵️ Add to Filter" button provides a quick way to use your existing known names.
+  - Clicking this opens a popup window displaying all entries from your `Known.txt` file, each with a checkbox.
+  - The popup includes:
+    - A search bar to quickly filter the list of names.
+    - "Select All" and "Deselect All" buttons for convenience.
+  - After selecting the desired names, click "Add Selected".
+  - The chosen names will be inserted into the "Filter by Character(s)" input field.
+  - **Important Formatting:** If a selected entry from `Known.txt` is a group (e.g., originally `(Boa Hancock)` in `Known.txt`, which implies aliases "Boa" and "Hancock"), it will be added to the filter field as `(Boa, Hancock)~`. Simple names are added as-is.
+
+
+---
+##  What's in v3.5.0? (Previous Update)
+This version brought significant enhancements to manga/comic downloading, filtering capabilities, and user experience:
+
+###  Enhanced Manga/Comic Mode
+
+- **Optional Filename Prefix:**
+  - When using the "Date Based" or "Original File Name" manga styles, an optional prefix can be specified in the UI.
+  - This prefix will be prepended to each filename generated by these styles.
+  - **Example (Date Based):** If prefix is `MySeries_`, files become `MySeries_001.jpg`, `MySeries_002.png`, etc.
+  - **Example (Original File Name):** If prefix is `Comic_Vol1_`, an original file `page_01.jpg` becomes `Comic_Vol1_page_01.jpg`.
+  - This input field appears automatically when either of these two manga naming styles is selected.
 
 - **New "Date Based" Filename Style:**
 
@@ -22,18 +144,25 @@ This version brings significant enhancements to manga/comic downloading, filteri
   - **Guaranteed Order:** Disables multi-threading for post processing to ensure sequential accuracy.
 
   - Works alongside the existing "Post Title" and "Original File Name" styles.
+- **New "Title+G.Num (Post Title + Global Numbering)" Filename Style:**
+  - Ideal for series where you want each file to be prefixed by its post title but still maintain a global sequential number across all posts from a single download session.
+  - **Naming Convention:** Files are named using the cleaned post title as a prefix, followed by an underscore and a globally incrementing number (e.g., `Post Title_001.ext`, `Post Title_002.ext`).
+  - **Example:**
+    - Post "Chapter 1: The Adventure Begins" (contains 2 files: `imageA.jpg`, `imageB.png`) -> `Chapter 1 The Adventure Begins_001.jpg`, `Chapter 1 The Adventure Begins_002.png`
+    - Next Post "Chapter 2: New Friends" (contains 1 file: `cover.jpg`) -> `Chapter 2 New Friends_003.jpg`
+  - **Sequential Integrity:** Multithreading for post processing is automatically disabled when this style is selected to ensure the global numbering is strictly sequential.
 
 ---
 
-### ✂️ "Remove Words from Filename" Feature
+###  "Remove Words from Filename" Feature
 
 - Specify comma-separated words or phrases (case-insensitive) that will be automatically removed from filenames.
 
-- Example: `patreon, [HD], _final` transforms `AwesomeArt_patreon_[HD]_final.jpg` into `AwesomeArt.jpg`.
+- Example: `patreon, [HD], _final` transforms `AwesomeArt_patreon` `Hinata_Hd` into `AwesomeArt.jpg` `Hinata.jpg`.
 
 ---
 
-### 📦 New "Only Archives" File Filter Mode
+###  New "Only Archives" File Filter Mode
 
 - Exclusively downloads `.zip` and `.rar` files.
 
@@ -41,7 +170,7 @@ This version brings significant enhancements to manga/comic downloading, filteri
 
 ---
 
-### 🗣️ Improved Character Filter Scope - "Comments (Beta)"
+###  Improved Character Filter Scope - "Comments (Beta)"
 
 - **File-First Check:** Prioritizes matching filenames before checking post comments for character names.
 
@@ -49,7 +178,7 @@ This version brings significant enhancements to manga/comic downloading, filteri
 
 ---
 
-### 🧐 Refined "Missed Character Log"
+###  Refined "Missed Character Log"
 
 - Displays a capitalized, alphabetized list of key terms from skipped post titles.
 
@@ -57,25 +186,25 @@ This version brings significant enhancements to manga/comic downloading, filteri
 
 ---
 
-### 🚀 Enhanced Multi-part Download Progress
+###  Enhanced Multi-part Download Progress
 
 - Granular visibility into active chunk downloads and combined speed for large files.
 
 ---
 
-### 🗺️ Updated Onboarding Tour
+###  Updated Onboarding Tour
 
-- Improved guide for new users, covering v3.4.0 features and existing core functions.
+- Improved guide for new users, covering v4.0.0 features and existing core functions.
 
 ---
 
-### 🛡️ Robust Configuration Path
+###  Robust Configuration Path
 
-- Settings and `Known.txt` are now stored in the system-standard application data folder (e.g., `AppData`, `~/.local/share`).
+- Settings and `Known.txt` are now stored in the same folder as app.
 
 ---
 
-## 🖥️ Core Features
+##  Core Features
 
 ---
 
@@ -95,11 +224,17 @@ This version brings significant enhancements to manga/comic downloading, filteri
 
 ---
 
-### 🧠 Smart Filtering
+###  Smart Filtering
 
 - **Character Name Filtering:**
   - Use `Tifa, Aerith` or group `(Boa, Hancock)` → folder `Boa Hancock`
-
+  - Flexible input for current session and for adding to `Known.txt`.
+  - Examples:
+    - `Nami` (simple character)
+    - `(Boa Hancock)~` (aliases for one character, session folder "Boa Hancock", adds `(Boa Hancock)` to `Known.txt`)
+    - `(Vivi, Uta)` (distinct characters, session folder "Vivi Uta", adds `Vivi` and `Uta` separately to `Known.txt`)
+  - A "⤵️ Add to Filter" button (near the `Known.txt` management UI) allows you to quickly populate this field by selecting from your existing `Known.txt` entries via a popup with search and checkbox selection.
+  - See "Advanced `Known.txt` and Character Filtering" for full details.
   - **Filter Scopes:**
     - `Files`
     - `Title`
@@ -122,7 +257,7 @@ This version brings significant enhancements to manga/comic downloading, filteri
 
 ---
 
-### 📚 Manga/Comic Mode (Creator Feeds Only)
+### Manga/Comic Mode (Creator Feeds Only)
 
 - **Chronological Processing** — Oldest posts first
 
@@ -130,12 +265,13 @@ This version brings significant enhancements to manga/comic downloading, filteri
   - `Name: Post Title (Default)`
   - `Name: Original File`
   - `Name: Date Based (New)`
+  - `Name: Title+G.Num (Post Title + Global Numbering)`
 
 - **Best With:** Character filters set to manga/series title
 
 ---
 
-### 📁 Folder Structure & Naming
+### Folder Structure & Naming
 
 - **Subfolders:**
   - Auto-created based on character name, post title, or `Known.txt`
@@ -146,16 +282,21 @@ This version brings significant enhancements to manga/comic downloading, filteri
 
 ---
 
-### 🖼️ Thumbnail & Compression Tools
-
-- **Download Thumbnails Only**
-
+### Thumbnail & Compression Tools
+- **Download Thumbnails Only:**
+  - Downloads small preview images from the API instead of full-sized files (if available).
+  - **Interaction with "Scan Content for Images" (New in v4.1.1):** When "Download Thumbnails Only" is active, "Scan Content for Images" is auto-enabled, and only images found by the content scan are downloaded. See "What's New in v4.1.1" for details.
+- **Scan Content for Images (New in v4.1.1):**
+  - A UI option to scan the HTML content of posts for embedded image URLs (from `<img>` tags or direct links).
+  - Resolves relative paths and helps capture images not listed in the API's formal attachments.
+  - See the "What's New in v4.1.1?" section for a comprehensive explanation.
 - **Compress to WebP** (via Pillow)
   - Converts large images to smaller WebP versions
 
+
 ---
 
-### ⚙️ Performance Features
+###  Performance Features
 
 - **Multithreading:**
   - For both post processing and file downloading
@@ -167,7 +308,7 @@ This version brings significant enhancements to manga/comic downloading, filteri
 
 ---
 
-### 📋 Logging & Progress
+### Logging & Progress
 
 - **Real-time Logs:** Activity, errors, skipped posts
 
@@ -179,19 +320,22 @@ This version brings significant enhancements to manga/comic downloading, filteri
 
 ---
 
-### 🗃️ Config System
+###  Config System
 
-- **Known.txt:**
-  - Stores names for smart folder suggestions
-  - Supports aliases via `(alias1, alias2)`
+- **`Known.txt` for Smart Folder Naming (Located in App Directory):**
+  - A user-editable file that stores a list of preferred names, series titles, or keywords.
+  - It's primarily used as an intelligent fallback for folder creation when "Separate Folders by Name/Title" is enabled.
+  - **Syntax:**
+    - Simple entries: `My Favorite Series` (creates folder "My Favorite Series", matches "My Favorite Series").
+    - Grouped entries: `(Desired Folder Name, alias1, alias2)` (creates folder "Desired Folder Name"; matches "Desired Folder Name", "alias1", or "alias2").
 
-- **Stored in Standard App Data Path**
+- **Settings Stored in App Directory**
 
 - **Editable Within GUI**
 
 ---
 
-## 💻 Installation
+## Installation
 
 ---
 
@@ -211,7 +355,7 @@ pip install PyQt5 requests Pillow
 
 ***
 
-## **🛠️ Build a Standalone Executable (Optional)**
+## ** Build a Standalone Executable (Optional)**
 
 1. Install PyInstaller:
 ```bash
@@ -227,14 +371,14 @@ pyinstaller --name "Kemono Downloader" --onefile --windowed --icon="Kemono.ico"
 
 ***
 
-## **🗂 Config Files**
-
-- `Known.txt` — character/show names used for folder organization
-- Supports grouped names in format: `(Name1, Name2)`
+## ** Config Files**
+- `settings.json` — Stores your UI preferences and settings.
+- `Known.txt` — Stores character names, series titles, or keywords for organizing downloaded content into specific folders.
+  - Supports simple entries (e.g., `My Series`) and grouped entries for aliases (e.g., `(Folder Name, alias1, alias2)` where "Folder Name" is the name of the created folder, and all terms are used for matching).
 
 ***
 
-## **💬 Feedback & Support**
+## ** Feedback & Support**
 
 Issues? Suggestions?  
 Open an issue on the [GitHub repository](https://github.com/Yuvi9587/kemono-downloader) or join our community.