Pixelboard Support


Pixelboard turns any meeting into a creative meeting. Designed around the whiteboarding experience, the app makes it simple to collaborate with a team from anywhere.

Inviting Others

Invite up to nine other people to a session by tapping on the (+) icon in the top right of the screen. Send an invitation link through Messages, email, and more.


To join a session, simply tap on the link sent to you by another Pixelboard user.


Each person is represented by a uniquely colored circle. The circle’s color cannot be changed. Inside the circle, you will see an emoji, single letter, or image. By default, each collaborator is assigned an emoji.

To change your avatar, tap the (...) icon and then tap Settings. You can choose a photo to use as your avatar, or enter your name to use your first initial.

How to Connect

Pixelboard uses a peer-to-peer network connection that allows people to connect with each other without an external server. To accomplish this, one person in each session is a “host” and other people are “guests.” The host is always the person who started the session.

Pixelboard host and guests

To host a Pixelboard session, you’ll need to enable UPNP, NAT-PMP, or manually open the port on your router. This will allow guests to directly connect to your device. Hosting a Pixelboard session over LTE is not currently supported, however you should be able to join a session using LTE as a guest.

Pixelboard uses UPnP or NAT-PMP to automatically forward a port from your router to your device. This should work for most people, but some routers have this option disabled by default. You can view the status of UPnP or NAT-PMP in Pixelboard’s Settings.

Pixelboard's UPnP status indicator

Please refer to your router's documentation to enable this feature.

Example of UPnP router setting

Pixelboard supports manual port forwarding, which may be required if UPnP or NAT-PMP is unavailable. If you have access to your router’s settings, you can configure port forwarding there.

Example of router port forwarding

Once it’s configured, specify your public IP address and port in Pixelboard’s Settings.

Pixelboard's manual port forwarding settings

If neither automatic nor manual port forwarding works for your specific networking conditions, you can still host a Pixelboard session over your local network. This is useful for corporate networks or VPNs where individuals are on the same network.

*Note: If the person attempting to host a global session is unable to use UPnP, NAT-PMP, or manual port forwarding, ask a collaborator who has access to their networking configuration to host the session. Only the host of a session needs an open port; all guests can connect to a properly configured host with a standard internet connection.


Error Message: Unable to Parse Session Link

This error could occur if the invitation link you’re tapping is broken. In some cases, sending the link over certain messaging clients might break the link in unexpected ways. If this is the case, please try sending the link via Messages or email.

Error Message: Invalid Session Link

This error could occur if the invitation link you’re tapping on was generated by your own device or is for an expired session. If the session has expired, the host can “restart” a session by tapping the (+) icon and sending a new link to you.

Error Message: Unable to Join Session - Upgrade to Pro

Pixelboard supports collaborating with up to nine other people who all have Pixelboard Pro or a Pixelboard Pro trial.

If you receive this error, please upgrade to Pixelboard Pro or start the free trial by using the “Upgrade” option in the main menu.

Error Message: Unable to Join Session - Maximum Collaborators Reached

Pixelboard supports collaborating with up to nine other people. You will encounter this error if you attempt to join a session that already has 10 people in it.

Each device you join from counts as one collaborator. If you’d like to switch devices after joining a session, please leave the session first and then join from the new device.

Error Message: Host Device Stopped Responding

When you join a Pixelboard session by tapping on an invitation link, one person in the session is the host. All other collaborators in the session are connecting to the host’s device. The host is usually the person who started the session and sent out the invitation link.

If the host’s device goes to sleep, loses internet connectivity, changes network configurations, or turns off, all collaborators will lose connection with the host. At that point, Pixelboard will alert the disconnected collaborators and give them an opportunity to copy the data to a new session that they will then host.

If attempts to reconnect fail, start a new session and invite everyone with a new invitation link. When you do this, you’ll have the option to “Start from a copy,” which keeps the drawings on each board intact for the new session.

Unable to Connect - Eternal Spinner

To achieve the best speeds on local networks, Pixelboard uses an account-less, peer-to-peer networking connection.

This connection should work without issue over local networks and VPN.

Because of unpredictable networking conditions across the internet, some connections are unsupported at this time. If the connection is not over a local network or VPN, and UPnP or NAT-PMP is unavailable, the host may need to use the port forwarding option.

Port Forwarding

If you’re trying to host a session over the internet (versus a local network or VPN), it may be necessary to use the port forwarding option to ensure that all collaborators are able to connect reliably.

Port forwarding redirects a communication request from one address and port number combination to another while traffic is traversing a network gateway, such as a router or firewall. This technique is most commonly used to make services on a host residing on an internal network available to clients on the opposite side of the gateway (external network) by remapping the destination IP address and port number of the communication to an internal host. Learn more about Learn more about port forwarding on Wikipedia.

To use the port forwarding option, open Settings, enter the following information under the Manual Port Forwarding section, and then turn the option on.

  • Public IP Address: This will typically be assigned by your internet service provider. The easiest way to find your public IP address is by searching for “what is my IP address” in Google.
  • Port: The port is the second part of port forwarding that allows each collaborator’s connection through. This will typically be a five digit number and shouldn’t be reserved for any other service. We suggest choosing a random number between 25,000 and 65,535. This port number will also need to be set in your router’s configuration to forward to your local device’s IP address. The destination port should be set to 6173.

Key Features


Use the Marker tool to add content to a board. Tap the marker icon once to select it; tap it twice to open the color and stroke weight picker. Choose from three different stroke widths and multiple colors. If you’re using an Apple Pencil, there is some pressure sensitivity for stroke widths.


Use the Eraser tool to erase something from a board. Tap the eraser icon once to select it; tap it twice to choose from three different thicknesses. Once selected, simply move your finger or Apple Pencil over the portion of the board you want to erase.


Use the Undo and Redo buttons in the top left of the screen to undo and redo your most recently drawn stroke. Unlike the eraser, these buttons only affect your own drawings.

Gesture Tool

Use the Gesture tool to motion around the board. Tap the gesture icon once to select it, and move your finger or Apple Pencil over the board to point to content.

The gesture tool allows you to communicate with disappearing ink that collaborators can see for a brief time. This is a great tool for pointing to content on a board without interrupting anyone’s work.

Smart Strokes

Use the Smart Strokes feature to draw perfect shapes. When you draw a basic shape on a board and Smart Strokes recognizes it, you can select Smart Stroke's version from the palette above the Marker tool. Use the palette to switch back and forth between the two versions until you make your next stroke on the board.

Enable the Smart Stroke palette in the Marker popover.

If you hold down at the end of your stroke, Smart Strokes will attempt to convert it to a recognized shape. If you continue to hold down after that, you can drag your shape around  the board  or reposition a line's endpoint.

To have Smart Strokes automatically transform recognized shapes into their ideal form, double tap the circle in the bottom left of the palette. The circle will turn green when activated. To deactivate, tap the circle again.

Image Placement

Place up to three images on each board. To add images, select Place Images from the menu in the top left of the screen. You can resize, rotate, mark up, and sketch over the images with your collaborators. To discard an image, tap the Trash Can or drag the image to the Trash Can.


Pixelboard is free to download. It comes with a two-week trial of the full Pro experience.

Pixelboard Pro includes the ability to collaborate with up to nine other people, use of the gesture tool, and access to three boards per session.

Once the trial is over, you can upgrade to Pixelboard Pro for $19.99 using an in-app purchase. Or, you may continue to use the app with limited functionality (no collaboration, one board, no gesture tool).

You may upgrade at any time.

The app requires iOS 11.


If you have any questions, concerns, or issues with Pixelboard, please contact support@blackpixel.com.

Start collaborating more creatively.

Download Pixelboard for free. Try the full Pro version for 14 days. At the end of the trial, purchase Pro for $19.99.

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