Using ComfortLight
You can adjust the ComfortLight brightness from your
Home screen or while you're reading.
• From your Home screen, tap the 
brightness icon
at the top of the screen, then drag the slider to the
left or right.
• While you're reading, swipe"up"or"down"with"two
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Connecting to your computer
Kobo Desktop is free software that lets you add and
manage books on your eReader.
Kobo Desktop lets you:
• Quickly add and delete a large number of books on
your eReader.
• Read books you've purchased from Kobo.
• Shop for books on your computer.
• Sync your eReader.
For more information about Kobo Desktop, you can:
• Download Kobo Desktop at
• Download the Kobo Desktop user guide from
• Search our help site at
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Firstly, call SepareteImageChannel(ChannelType.Red) to get a grayscale image which extract form the left.png image's red channel.
control Library platform:How to C#: Color and Lightness Effects
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Using Wi Fi
What's in this section
• Connecting your Kobo eReader to a Wi Fi network
• Checking the Wi Fi status on your Kobo eReader
• Turning Wi Fi off on your Kobo eReader
Connecting your Kobo eReader to a Wi Fi
Use Wi Fi to connect to the Internet on your eReader, to
search the Kobo Bookstore, and sync your Kobo eReader.
All you need is access to a wireless network.
1. Go to your Home screen.
2. Tap the 
Sync tile.
Your eReader will try to connect to Wi Fi. This may
take a moment.
3. You'll be prompted to choose a wireless network.
Tap the name of the network you want to use. If
there's a 
Lock icon next to a network, you need a
password to use that network.
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4. If you're prompted for a network password, use the
keyboard to type in the password and then tap Join.
You can tap Show Password to see what you're
Checking the Wi Fi status on your Kobo eReader
To see if you’re connected to the Internet, check the Wi Fi
status icon at the top of your screen.
Wi Fi icons
Wi Fi is disabled.
You have a moderately good Wi Fi connection.
You have an excellent Wi Fi connection.
You may have to sync your eReader to see the Wi Fi status
1. Go to your Home screen.
2. Tap the 
Sync tile.
The Wi Fi status icon will appear at the top of the
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Convert smooth lines to curves. Program.RootPath + "\\" 3_optimized.pdf"; 'create optimizing PDFCompression.JBIG2Decode '--Options for Grayscale Image-- 'to
Turning Wi Fi off on your Kobo eReader
1. Go to your Home screen.
2. Tap the 
Menu icon at the top of the screen.
The Quick Settings panel will appear.
3. Tap Wi Fi.
4. Tap the 
slider icon beside Wi Fi: Enabled.
When you see a dialog box that says Wi Fi: Disabled,
your eReader will no longer have access to the
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Syncing your Kobo eReader
What's in this section
• Understanding Sync
• Syncing your Kobo eReader with Wi Fi
• Syncing your Kobo eReader with Kobo Desktop
Understanding Sync
It’s important to sync regularly to get recent software or
app updates, download newly purchased books to your
Kobo Library, and to update your books with bookmarks or
annotations you made while reading on another device. If
you buy a book on, you'll need to sync before
you'll see the book in your Kobo Library.
There are two ways you can sync: using Wi Fi, or by
connecting your Kobo eReader to Kobo Desktop on your
After you’ve synced, you’ll see the covers of all your books
and previews in your Library. Some books will have the word
Download beside the book title, or a 
Download icon on
the book cover. Tap the cover to get the book on your
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Syncing your Kobo eReader with Wi Fi
Make sure your Wi Fi is enabled and you are connected to a
network before syncing your eReader.
1. Go to your Home screen.
2. Tap the 
Sync tile.
• If you are within range of a known network, your
eReader automatically joins that network and will
begin syncing.
• If you are not within range of a known network, your
eReader will begin the Adding a Network process.
Syncing your Kobo eReader with Kobo Desktop
You can also sync your eReader by connecting it to your
computer with Kobo Desktop. Kobo Desktop is a free app
that lets you shop the Kobo Store and manage books on
your eReader. Your computer should be connected to the
Internet before you sync.
To download Kobo Desktop, visit
1. Connect your eReader to your computer using a
Micro USB cable and tap Connect.
2. Open Kobo Desktop on your computer.
3. If you're not already signed in to your Kobo account,
click the 
4. Click the 
Sync icon.
Your eReader will sync and update your Library.
5. Click the 
Eject button at the top of the screen to
disconnect your eReader from your computer.
Using your Library
What's in this section
• Using your Home screen
• Exploring your Library
• Searching for books
Using your Home screen
Go to your Home screen by tapping the 
Home icon at
the top of the screen. While reading, tap the centre of your
screen to see the Home icon.
Home screen tiles include:
• The book you're currently reading.
• Books you've recently opened or purchased.
• Recommended books we think you'll enjoy.
• The 
Sync tile to add newly purchased books to
your Library and to update your eReader.
At the bottom of your Home screen, you can access your
Library, the Kobo Bookstore, and Extras, which include a
dictionary and your personal reading statistics.
Exploring your Library
Your Library lets you read and manage books on your
To access your purchased books, free book previews, and
collections in your Library:
1. Go to your Home screen.
2. Tap Library.
3. Select one of your Library areas:
• Books: all the Kobo books, PDFs, and other
documents in your Library.
Documents you may be interested
Documents you may be interested