diff --git a/go.mod b/go.mod
index 2b2b003..219395f 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,7 @@ go 1.12
 
 require (
 	github.com/fatih/color v1.7.0
-	github.com/go-shiori/go-readability v0.0.0-20190521101123-866575e3f1b6
+	github.com/go-shiori/go-readability v0.0.0-20190522013032-128e0c654d14
 	github.com/go-sql-driver/mysql v1.4.1 // indirect
 	github.com/jmoiron/sqlx v1.2.0
 	github.com/lib/pq v1.1.1 // indirect
diff --git a/go.sum b/go.sum
index 7500bd0..b476e03 100644
--- a/go.sum
+++ b/go.sum
@@ -10,8 +10,8 @@ github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
 github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
 github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/go-shiori/go-readability v0.0.0-20190521101123-866575e3f1b6 h1:lp+AH6pCPsOKf9M2Az76JsxUneHweAsOlq0GMtOf6OY=
-github.com/go-shiori/go-readability v0.0.0-20190521101123-866575e3f1b6/go.mod h1:1tFV9uTM/xnAKQw5EgPs+ip50udKhCjaP0nYdkSDXcU=
+github.com/go-shiori/go-readability v0.0.0-20190522013032-128e0c654d14 h1:rvu9FluelHm3ykyizaBwhQMAxsDeg164iNEoMoZo7cI=
+github.com/go-shiori/go-readability v0.0.0-20190522013032-128e0c654d14/go.mod h1:1tFV9uTM/xnAKQw5EgPs+ip50udKhCjaP0nYdkSDXcU=
 github.com/go-sql-driver/mysql v1.4.0 h1:7LxgVwFb2hIQtMm87NdgAVfXjnt4OePseqT1tKx+opk=
 github.com/go-sql-driver/mysql v1.4.0/go.mod h1:zAC/RDZ24gD3HViQzih4MyKcchzm+sOG5ZlKdlhCg5w=
 github.com/go-sql-driver/mysql v1.4.1 h1:g24URVg0OFbNUTx9qqY1IRZ9D9z3iPyi5zKhQZpNwpA=
diff --git a/internal/cmd/add.go b/internal/cmd/add.go
index f96d41e..1ad80b7 100644
--- a/internal/cmd/add.go
+++ b/internal/cmd/add.go
@@ -53,6 +53,13 @@ func addHandler(cmd *cobra.Command, args []string) {
 		Excerpt: normalizeSpace(excerpt),
 	}
 
+	// Create bookmark ID
+	book.ID, err = DB.CreateNewID("bookmark")
+	if err != nil {
+		cError.Printf("Failed to create ID: %v\n", err)
+		return
+	}
+
 	// Set bookmark tags
 	book.Tags = make([]model.Tag, len(tags))
 	for i, tag := range tags {
@@ -63,6 +70,8 @@ func addHandler(cmd *cobra.Command, args []string) {
 	var imageURL string
 
 	if !offline {
+		cInfo.Println("Downloading article")
+
 		article, err := readability.FromURL(book.URL, time.Minute)
 		if err != nil {
 			cError.Printf("Failed to download article: %v\n", err)
@@ -96,9 +105,9 @@ func addHandler(cmd *cobra.Command, args []string) {
 	}
 
 	// Save bookmark to database
-	book.ID, err = DB.InsertBookmark(book)
+	_, err = DB.SaveBookmarks(book)
 	if err != nil {
-		cError.Printf("Failed to insert bookmark: %v\n", err)
+		cError.Printf("Failed to save bookmark: %v\n", err)
 		return
 	}
 
@@ -113,5 +122,7 @@ func addHandler(cmd *cobra.Command, args []string) {
 		}
 	}
 
+	// Print added bookmark
+	fmt.Println()
 	printBookmarks(book)
 }
diff --git a/internal/cmd/update.go b/internal/cmd/update.go
index 7ecedf6..c29f5e1 100644
--- a/internal/cmd/update.go
+++ b/internal/cmd/update.go
@@ -1,6 +1,18 @@
 package cmd
 
-import "github.com/spf13/cobra"
+import (
+	"fmt"
+	nurl "net/url"
+	fp "path/filepath"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/go-shiori/go-readability"
+	"github.com/go-shiori/shiori/internal/database"
+	"github.com/go-shiori/shiori/internal/model"
+	"github.com/spf13/cobra"
+)
 
 func updateCmd() *cobra.Command {
 	cmd := &cobra.Command{
@@ -13,6 +25,7 @@ func updateCmd() *cobra.Command {
 			"- If indices are passed without any flags (--url, --title, --tag and --excerpt), read the URLs from DB and update titles from web.\n" +
 			"- If --url is passed (and --title is omitted), update the title from web using the URL. While using this flag, update only accept EXACTLY one index.\n" +
 			"While updating bookmark's tags, you can use - to remove tag (e.g. -nature to remove nature tag from this bookmark).",
+		Run: updateHandler,
 	}
 
 	cmd.Flags().StringP("url", "u", "", "New URL for this bookmark.")
@@ -25,3 +38,214 @@ func updateCmd() *cobra.Command {
 
 	return cmd
 }
+
+func updateHandler(cmd *cobra.Command, args []string) {
+	// Parse flags
+	url, _ := cmd.Flags().GetString("url")
+	title, _ := cmd.Flags().GetString("title")
+	excerpt, _ := cmd.Flags().GetString("excerpt")
+	tags, _ := cmd.Flags().GetStringSlice("tags")
+	offline, _ := cmd.Flags().GetBool("offline")
+	skipConfirm, _ := cmd.Flags().GetBool("yes")
+	dontOverwrite := cmd.Flags().Changed("dont-overwrite")
+
+	// If no arguments (i.e all bookmarks going to be updated), confirm to user
+	if len(args) == 0 && !skipConfirm {
+		confirmUpdate := ""
+		fmt.Print("Update ALL bookmarks? (y/N): ")
+		fmt.Scanln(&confirmUpdate)
+
+		if confirmUpdate != "y" {
+			fmt.Println("No bookmarks updated")
+			return
+		}
+	}
+
+	// Convert args to ids
+	ids, err := parseStrIndices(args)
+	if err != nil {
+		cError.Printf("Failed to parse args: %v\n", err)
+		return
+	}
+
+	// Clean up new parameter from flags
+	title = normalizeSpace(title)
+	excerpt = normalizeSpace(excerpt)
+
+	if cmd.Flags().Changed("url") {
+		// Clean up URL by removing its fragment and UTM parameters
+		tmp, err := nurl.Parse(url)
+		if err != nil || tmp.Scheme == "" || tmp.Hostname() == "" {
+			cError.Println("URL is not valid")
+			return
+		}
+
+		tmp.Fragment = ""
+		clearUTMParams(tmp)
+		url = tmp.String()
+
+		// Since user uses custom URL, make sure there is only one ID to update
+		if len(ids) != 1 {
+			cError.Println("Update only accepts one index while using --url flag")
+			return
+		}
+	}
+
+	// Fetch bookmarks from database
+	filterOptions := database.GetBookmarksOptions{
+		IDs: ids,
+	}
+
+	bookmarks, err := DB.GetBookmarks(filterOptions)
+	if err != nil {
+		cError.Printf("Failed to get bookmarks: %v\n", err)
+		return
+	}
+
+	if len(bookmarks) == 0 {
+		cError.Println("No matching index found")
+		return
+	}
+
+	// If it's not offline mode, fetch data from internet
+	if !offline {
+		mx := sync.RWMutex{}
+		wg := sync.WaitGroup{}
+		semaphore := make(chan struct{}, 10)
+
+		for i, book := range bookmarks {
+			wg.Add(1)
+
+			// If used, use submitted URL
+			if url != "" {
+				book.URL = url
+			}
+
+			go func(i int, book model.Bookmark, nData int) {
+				// Make sure to finish the WG
+				defer wg.Done()
+
+				// Register goroutine to semaphore
+				semaphore <- struct{}{}
+				defer func() {
+					<-semaphore
+				}()
+
+				// Download article
+				cInfo.Printf("[ %d / %d ] Downloading %s\n", i+1, nData, book.URL)
+
+				article, err := readability.FromURL(book.URL, time.Minute)
+				if err != nil {
+					cError.Printf("[ %d / %d ] Failed to download article: %v\n", i+1, nData, err)
+					return
+				}
+
+				book.Author = article.Byline
+				book.Content = article.TextContent
+				book.HTML = article.Content
+
+				if !dontOverwrite {
+					book.Title = article.Title
+					book.Excerpt = article.Excerpt
+				}
+
+				// Get image URL and save it to local disk
+				var imageURL string
+				if article.Image != "" {
+					imageURL = article.Image
+				} else if article.Favicon != "" {
+					imageURL = article.Favicon
+				}
+
+				if imageURL != "" {
+					imgPath := fp.Join(DataDir, "thumb", fmt.Sprintf("%d", book.ID))
+
+					err = downloadFile(imageURL, imgPath, time.Minute)
+					if err != nil {
+						cError.Printf("Failed to download image: %v\n", err)
+						return
+					}
+				}
+
+				// Save parse result to bookmark
+				mx.Lock()
+				bookmarks[i] = book
+				mx.Unlock()
+			}(i, book, len(bookmarks))
+		}
+
+		// Wait until all download finished
+		wg.Wait()
+	}
+
+	// Map which tags is new or deleted from flag --tags
+	addedTags := make(map[string]struct{})
+	deletedTags := make(map[string]struct{})
+	for _, tag := range tags {
+		tagName := strings.ToLower(tag)
+		tagName = strings.TrimSpace(tagName)
+
+		if strings.HasPrefix(tagName, "-") {
+			tagName = strings.TrimPrefix(tagName, "-")
+			deletedTags[tagName] = struct{}{}
+		} else {
+			addedTags[tagName] = struct{}{}
+		}
+	}
+
+	// Attach user submitted value to the bookmarks
+	for i, book := range bookmarks {
+		// If user submit his own title or excerpt, use it
+		if title != "" {
+			book.Title = title
+		}
+
+		if excerpt != "" {
+			book.Excerpt = excerpt
+		}
+
+		// Make sure title is not empty
+		if book.Title == "" {
+			book.Title = book.URL
+		}
+
+		// Generate new tags
+		tmpAddedTags := make(map[string]struct{})
+		for key, value := range addedTags {
+			tmpAddedTags[key] = value
+		}
+
+		newTags := []model.Tag{}
+		for _, tag := range book.Tags {
+			if _, isDeleted := deletedTags[tag.Name]; isDeleted {
+				tag.Deleted = true
+			}
+
+			if _, alreadyExist := addedTags[tag.Name]; alreadyExist {
+				delete(tmpAddedTags, tag.Name)
+			}
+
+			newTags = append(newTags, tag)
+		}
+
+		for tag := range tmpAddedTags {
+			newTags = append(newTags, model.Tag{Name: tag})
+		}
+
+		book.Tags = newTags
+
+		// Set bookmark's new data
+		bookmarks[i] = book
+	}
+
+	// Save bookmarks to database
+	bookmarks, err = DB.SaveBookmarks(bookmarks...)
+	if err != nil {
+		cError.Printf("Failed to save bookmark: %v\n", err)
+		return
+	}
+
+	// Print updated bookmarks
+	fmt.Println()
+	printBookmarks(bookmarks...)
+}
diff --git a/internal/cmd/utils.go b/internal/cmd/utils.go
index 19ae134..0ebe79c 100644
--- a/internal/cmd/utils.go
+++ b/internal/cmd/utils.go
@@ -23,10 +23,13 @@ var (
 	cTitle    = color.New(color.FgHiGreen).Add(color.Bold)
 	cReadTime = color.New(color.FgHiMagenta)
 	cURL      = color.New(color.FgHiYellow)
-	cError    = color.New(color.FgHiRed)
 	cExcerpt  = color.New(color.FgHiWhite)
 	cTag      = color.New(color.FgHiBlue)
 
+	cInfo    = color.New(color.FgHiCyan)
+	cError   = color.New(color.FgHiRed)
+	cWarning = color.New(color.FgHiYellow)
+
 	errInvalidIndex = errors.New("Index is not valid")
 )
 
diff --git a/internal/database/database.go b/internal/database/database.go
index 8770daf..62ea301 100644
--- a/internal/database/database.go
+++ b/internal/database/database.go
@@ -17,8 +17,8 @@ type GetBookmarksOptions struct {
 
 // DB is interface for accessing and manipulating data in database.
 type DB interface {
-	// InsertBookmark inserts new bookmark to database.
-	InsertBookmark(bookmark model.Bookmark) (int, error)
+	// SaveBookmarks saves bookmarks data to database.
+	SaveBookmarks(bookmarks ...model.Bookmark) ([]model.Bookmark, error)
 
 	// GetBookmarks fetch list of bookmarks based on submitted options.
 	GetBookmarks(opts GetBookmarksOptions) ([]model.Bookmark, error)
diff --git a/internal/database/sqlite.go b/internal/database/sqlite.go
index 08baf64..b8ef0d1 100644
--- a/internal/database/sqlite.go
+++ b/internal/database/sqlite.go
@@ -77,36 +77,13 @@ func OpenSQLiteDatabase(databasePath string) (*SQLiteDatabase, error) {
 	return &SQLiteDatabase{*db}, err
 }
 
-// InsertBookmark saves new bookmark to database.
-// Returns new ID and error message if any happened.
-func (db *SQLiteDatabase) InsertBookmark(bookmark model.Bookmark) (bookmarkID int, err error) {
-	// Check URL and title
-	if bookmark.URL == "" {
-		return -1, fmt.Errorf("URL must not be empty")
-	}
-
-	if bookmark.Title == "" {
-		return -1, fmt.Errorf("title must not be empty")
-	}
-
-	// Create ID (if needed) and modified time
-	if bookmark.ID != 0 {
-		bookmarkID = bookmark.ID
-	} else {
-		bookmarkID, err = db.CreateNewID("bookmark")
-		if err != nil {
-			return -1, err
-		}
-	}
-
-	if bookmark.Modified == "" {
-		bookmark.Modified = time.Now().UTC().Format("2006-01-02 15:04:05")
-	}
-
-	// Begin transaction
+// SaveBookmarks saves new or updated bookmarks to database.
+// Returns the saved ID and error message if any happened.
+func (db *SQLiteDatabase) SaveBookmarks(bookmarks ...model.Bookmark) (result []model.Bookmark, err error) {
+	// Prepare transaction
 	tx, err := db.Beginx()
 	if err != nil {
-		return -1, err
+		return []model.Bookmark{}, err
 	}
 
 	// Make sure to rollback if panic ever happened
@@ -115,65 +92,108 @@ func (db *SQLiteDatabase) InsertBookmark(bookmark model.Bookmark) (bookmarkID in
 			panicErr, _ := r.(error)
 			tx.Rollback()
 
-			bookmarkID = -1
+			result = []model.Bookmark{}
 			err = panicErr
 		}
 	}()
 
-	// Save article to database
-	tx.MustExec(`INSERT INTO bookmark (
-		id, url, title, excerpt, author, modified) 
-		VALUES(?, ?, ?, ?, ?, ?)`,
-		bookmarkID,
-		bookmark.URL,
-		bookmark.Title,
-		bookmark.Excerpt,
-		bookmark.Author,
-		bookmark.Modified)
+	// Prepare statement
+	stmtInsertBook, _ := tx.Preparex(`INSERT INTO bookmark
+		(id, url, title, excerpt, author, modified)
+		VALUES(?, ?, ?, ?, ?, ?)
+		ON CONFLICT(id) DO UPDATE SET
+		url = ?, title = ?,	excerpt = ?, author = ?, modified = ?`)
 
-	// Save bookmark content
-	tx.MustExec(`INSERT INTO bookmark_content 
-		(docid, title, content, html) VALUES (?, ?, ?, ?)`,
-		bookmarkID,
-		bookmark.Title,
-		bookmark.Content,
-		bookmark.HTML)
+	stmtInsertBookContent, _ := tx.Preparex(`INSERT OR IGNORE INTO bookmark_content
+		(docid, title, content, html) 
+		VALUES (?, ?, ?, ?)`)
 
-	// Save tags
-	stmtGetTag, err := tx.Preparex(`SELECT id FROM tag WHERE name = ?`)
-	checkError(err)
+	stmtUpdateBookContent, _ := tx.Preparex(`UPDATE bookmark_content SET
+		title = ?, content = ?, html = ? 
+		WHERE docid = ?`)
 
-	stmtInsertTag, err := tx.Preparex(`INSERT INTO tag (name) VALUES (?)`)
-	checkError(err)
+	stmtGetTag, _ := tx.Preparex(`SELECT id FROM tag WHERE name = ?`)
 
-	stmtInsertBookmarkTag, err := tx.Preparex(`INSERT OR IGNORE INTO bookmark_tag 
+	stmtInsertTag, _ := tx.Preparex(`INSERT INTO tag (name) VALUES (?)`)
+
+	stmtInsertBookTag, _ := tx.Preparex(`INSERT OR IGNORE INTO bookmark_tag
 		(tag_id, bookmark_id) VALUES (?, ?)`)
-	checkError(err)
 
-	for _, tag := range bookmark.Tags {
-		tagName := strings.ToLower(tag.Name)
-		tagName = strings.TrimSpace(tagName)
+	stmtDeleteBookTag, _ := tx.Preparex(`DELETE FROM bookmark_tag
+		WHERE bookmark_id = ? AND tag_id = ?`)
 
-		tagID := -1
-		err = stmtGetTag.Get(&tagID, tagName)
-		checkError(err)
+	// Prepare modified time
+	modifiedTime := time.Now().UTC().Format("2006-01-02 15:04:05")
 
-		if tagID == -1 {
-			res := stmtInsertTag.MustExec(tagName)
-			tagID64, err := res.LastInsertId()
-			checkError(err)
-
-			tagID = int(tagID64)
+	// Execute statements
+	result = []model.Bookmark{}
+	for _, book := range bookmarks {
+		// Check ID, URL and title
+		if book.ID == 0 {
+			panic(fmt.Errorf("ID must not be empty"))
 		}
 
-		stmtInsertBookmarkTag.Exec(tagID, bookmarkID)
+		if book.URL == "" {
+			panic(fmt.Errorf("URL must not be empty"))
+		}
+
+		if book.Title == "" {
+			panic(fmt.Errorf("title must not be empty"))
+		}
+
+		// Set modified time
+		book.Modified = modifiedTime
+
+		// Save bookmark
+		stmtInsertBook.MustExec(book.ID,
+			book.URL, book.Title, book.Excerpt, book.Author, book.Modified,
+			book.URL, book.Title, book.Excerpt, book.Author, book.Modified)
+
+		stmtUpdateBookContent.MustExec(book.Title, book.Content, book.HTML, book.ID)
+		stmtInsertBookContent.MustExec(book.ID, book.Title, book.Content, book.HTML)
+
+		// Save book tags
+		newTags := []model.Tag{}
+		for _, tag := range book.Tags {
+			// If it's deleted tag, delete and continue
+			if tag.Deleted {
+				stmtDeleteBookTag.MustExec(book.ID, tag.ID)
+				continue
+			}
+
+			// Normalize tag name
+			tagName := strings.ToLower(tag.Name)
+			tagName = strings.Join(strings.Fields(tagName), " ")
+
+			// If tag doesn't have any ID, fetch it from database
+			if tag.ID == 0 {
+				err = stmtGetTag.Get(&tag.ID, tagName)
+				checkError(err)
+
+				// If tag doesn't exist in database, save it
+				if tag.ID == 0 {
+					res := stmtInsertTag.MustExec(tagName)
+					tagID64, err := res.LastInsertId()
+					checkError(err)
+
+					tag.ID = int(tagID64)
+				}
+
+				stmtInsertBookTag.Exec(tag.ID, book.ID)
+			}
+
+			newTags = append(newTags, tag)
+		}
+
+		book.Tags = newTags
+		result = append(result, book)
 	}
 
 	// Commit transaction
 	err = tx.Commit()
 	checkError(err)
 
-	return bookmarkID, err
+	return result, err
 }
 
 // GetBookmarks fetch list of bookmarks based on submitted ids.