Library

Types of library assets you can manage:

• Media (images, videos, animations)
• Music (audio files)
• Fonts
• Templates

Media

Go to Library → Media to view and manage custom images and videos. Media uploaded here is available to everyone in your workspace, from Media > Library in the editor, whenever they're working on a video.

To upload media, select Upload file. You can select and upload multiple files at once—it isn't limited to one file at a time.

Supported formats:

• Images: .jpg, .png, .svg (maximum file size: 250 MB)
• Videos: .mp4, .webm (maximum file size: 250 MB)
• Lottie animations: .json (maximum file size: 250 MB)
• GIFs: .gif (maximum file size: 250 MB)

To manage existing media assets, select the three-dot menu next to any item. Available actions include:

• Copy asset ID: Copy the asset's ID to use it as a variable with Synthesia's API.
• Rename asset
• Download asset
• Delete asset

Music

Go to Library → Music to view and manage custom audio files.

To upload music, select Upload file and choose your audio file.

Supported formats: .mp3, .wav, .oga, .aac, .flac.

To manage existing music assets, select the three-dot menu next to any item. Available actions include:

• Copy asset ID
• Rename asset
• Download asset
• Delete asset

Fonts

Go to Library → Fonts to view and manage custom fonts.

To upload a font:

1. Select Upload file, then select a font file for a specific weight and style. Only upload fonts from the same font family at a time—Synthesia combines them into a single family for you. Supported formats: .ttf, .otf, .woff, and .woff2.
2. Review your uploaded fonts. For each file, you'll see the font name, file name, weight (on a 100 Thin to 900 Heavy scale), style (Italic or Normal), and a preview.
3. Each weight and style is a separate file. To add more, for example a Normal weight to go with an Italic you already uploaded, select Add fonts in the top-right corner.
4. Enter a Font family name to identify the uploaded fonts, then select Publish fonts to workspace to make them available wherever you select a font. Select Cancel to discard the upload instead.

Once uploaded, your custom fonts are available when styling text or setting up a brand kit.

To manage existing fonts, select the three-dot menu next to any item. Available actions include:

• Copy asset ID
• Rename asset
• Delete asset

Templates

Go to Library → Templates to view custom templates available in your workspace. Select + Create new template to create a custom template. See Creating a custom template to create one from scratch or from an existing video.

Edit a template

To edit an existing template, hover over it and select Edit to modify it. If you make a change, select Publish Template in the upper-right corner of the edit page when finished, to make sure changes are saved.

Template management options

To manage an existing template, hover over it and select the three-dot menu to access the following options:

• Open in new tab: Opens the template in a separate browser tab.
• Share: Allows sharing across workspaces or organizations.
• Copy ID: Copies the template's unique identifier.
• Set as default: Designates this template as the workspace default—all new videos use this template as their starting point. Only available to workspace admins.
• Download: Downloads the template audio as a .wav file.
• Rename: Changes the template name.
• Move to: Transfers the template to a different workspace.
• Duplicate: Creates a copy of the template.
• Create video: Starts a new video using this template.
• Remove: Deletes the template.