Assets & Storage

Managing Assets

Assets are files you upload to RenderStack for use in your templates. This includes images, fonts, and other media files.

Uploading Assets#

  1. Navigate to Assets from the sidebar
  2. Click Upload Assets
  3. Select one or more files from your computer
  4. Files are automatically uploaded and categorized

Asset Types#

Images#

Supported image formats:

  • PNG (.png)
  • JPEG (.jpg, .jpeg)
  • WebP (.webp)
  • SVG (.svg)
  • GIF (.gif)

Use uploaded images as default sources for image layers in your templates, or reference them in API calls.

Fonts#

Upload custom font files to use in your text layers:

  • TrueType (.ttf)
  • OpenType (.otf)
  • WOFF (.woff)
  • WOFF2 (.woff2)

Once uploaded, custom fonts automatically appear in the Font Family dropdown in the Template Editor under the "Uploaded Fonts" section. The font name displayed is the filename without the extension. All four font formats are fully supported in both the visual editor and server-side rendering. WOFF and WOFF2 fonts are automatically converted to TrueType on the server for rendering compatibility — no manual conversion is needed.

Plan Requirement: Custom fonts require a Pro, Business, or Enterprise plan. If your organization's plan does not include custom fonts, uploaded font files are preserved but will not be used during rendering. Instead, any custom font references in templates will automatically fall back to Arial at render time. The render response will include a CUSTOM_FONT_SUBSTITUTED warning indicating which fonts were replaced. You can still edit templates and switch to any system font. If you later upgrade to a plan that includes custom fonts, your previously uploaded fonts will become available again without needing to re-upload.

Other Files#

You can also upload other file types for reference or storage purposes.

Managing Assets#

Viewing Assets#

The Assets page organizes your files into tabs:

  • Images — All uploaded image files with previews
  • Fonts — Uploaded font files
  • All — Complete list of all assets

Each asset card shows:

  • File preview (for images)
  • File name
  • File size
  • Upload date

Deleting Assets#

To remove an asset:

  1. Find the asset in your list
  2. Click the Delete button (trash icon)
  3. The asset will be permanently removed

Note: Deleting an asset does not automatically update templates that reference it. Make sure to update any templates using the asset before deleting.

Storage#

Assets are stored securely in cloud object storage. Each uploaded file gets a unique path that can be referenced in templates and API calls.

Best Practices#

  1. Use descriptive file names — Name files clearly (e.g., company-logo-dark.png instead of image1.png)
  2. Optimize images before uploading — Compress large images to reduce render times
  3. Use appropriate formats — PNG for graphics with transparency, JPEG for photographs
  4. Clean up unused assets — Regularly review and remove assets you no longer need