What is the Maximum Image Size for Roll20? A Comprehensive Guide
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The direct answer to the question of maximum image size for Roll20 is multifaceted and depends on both your subscription level and the intended use of the image. For individual image uploads, such as maps, tokens, or handouts, Free users are limited to a maximum of 5MB per file, while Pro and Plus subscribers can upload images up to 10MB each. It’s important to note that these limits apply to single images. While these are the technical limits of image upload, it’s also essential to be aware of how large images will affect performance for both you and your players. Large maps and tokens can cause lag, regardless of file size. Keeping your images optimized for Roll20, rather than just under the max size, will ensure a smooth gaming experience.
Understanding Roll20’s Image File Limits
Roll20 supports three primary image file types: JPG, GIF, and PNG. Each has its own benefits and drawbacks.
- JPG: Generally, Roll20 prefers JPG files. They offer good image quality with smooth gradients and a relatively small file size, making them great for backgrounds or large maps. However, JPG files don’t support transparency, and their quality can degrade if heavily compressed.
- PNG: While supporting transparency which can be excellent for tokens and overlays, PNG files tend to be larger in size compared to JPG files. They can also take longer to load.
- GIF: Supports animation and transparency. However, large animated GIFS, similar to PNGs can also have larger file sizes and load slower than JPGs.
Beyond file type, you need to consider your subscription level. Free users are restricted to 5MB per image upload, and 10MB for all types of uploads in the Art Library. Pro and Plus users are given double the upload size, at 10MB per image, and a maximum of 20MB in the Art Library. So if you’re a Pro subscriber that has 30MB of total images, only 20MB is available.
Performance Considerations and Optimization
While an image might be under the size limit, it doesn’t guarantee optimal performance. Very large maps, irrespective of file size, can cause lag due to the demands on players’ graphics cards. Therefore, consider dividing large maps into smaller sections or using a lower image resolution.
Resolution and Pixel Size
Roll20 operates on a grid system. It’s recommended to use 70 pixels per unit for maps. That means each square in your map will be 70 pixels by 70 pixels. For tokens, 140 pixels per unit is recommended. For example, a 2×2 token would be 280 pixels by 280 pixels. Larger sizes offer more detail but also increase file size, which can impact performance, especially for lower end computers. The 70px and 140px recommendations from Roll20 allow for some detail without being extremely demanding. It’s a great compromise between clarity and file size/loading.
It’s also beneficial to target a resolution of 72-150 PPI (pixels per inch) for static images to balance clarity with performance. While you may aim for crisp images, you should try to remain within the 72-150 PPI range to avoid performance issues.
Resizing Images
You can resize maps directly on the Roll20 tabletop using the scaling transformers (the light blue boxes at the edges of the map). For precise resizing, right-click on the map and select Advanced > Set Dimensions. Roll20 provides a function to adjust the grid scale. This means if you have a 10×10 map, and you want it to be 20×20, simply type in the width and height of the grid you want and Roll20 will resize accordingly.
Frequently Asked Questions (FAQs)
1. What image file types are supported by Roll20?
Roll20 supports JPG, GIF, and PNG image file types. However, JPG is recommended for static images like maps.
2. What are the maximum image upload sizes for Free users and Paid users?
Free users have a 5MB per file upload limit, while Pro and Plus subscribers can upload images up to 10MB each. It should also be noted that free users are limited to 10MB in the Art Library total and Pro and Plus users are limited to 20MB in the Art Library total.
3. Can I upload animated GIFs to Roll20?
Yes, you can upload animated GIFs, but you should keep the file size small to prevent lag and loading issues.
4. Why is my image not uploading to Roll20?
Check the file size limit for your subscription level and ensure it does not exceed the limit. Also, ensure that the image is of a supported file type and that you have a stable internet connection. Also consider the total amount of files you have in your Art Library.
5. How many pixels should I use for a map in Roll20?
Roll20 recommends 70 pixels per unit for maps.
6. How many pixels should I use for tokens in Roll20?
Roll20 recommends 140 pixels per unit for tokens.
7. Can I resize images once uploaded to Roll20?
Yes, you can resize images using the scaling transformers on the tabletop or by right-clicking on the image and choosing Advanced > Set Dimensions.
8. How do I resize a map to fit the grid correctly?
You can manually adjust the width and height, or use the advanced setting to enter the dimensions of your grid.
9. What image resolution is best for Roll20?
For static images, a resolution of 72-150 PPI (pixels per inch) is ideal for optimal performance.
10. Does Roll20 compress images?
Roll20 does not aggressively compress images, but it does resize them to fit the display area. It is also possible the image is being compressed when uploaded depending on the quality and settings of the original file.
11. What happens if my image is too large?
If your image exceeds the size limit for your subscription level, the file will not upload. You will have to use external editing software to compress and reduce the image size.
12. How can I reduce the size of my images before uploading?
You can use a variety of image editing software, such as GIMP, Photoshop, Paint.NET, or online tools to compress your images by reducing resolution, or overall dimensions before uploading.
13. Why is my game lagging when using large maps?
Large maps, regardless of file size, can cause lag due to the demands on player’s video cards. Try dividing your map into smaller sections, reducing the dimensions of the map, or optimizing the images by lowering the resolution.
14. Is there a recommended file size to stay under, even if the maximum is higher?
It’s generally best to keep your images as small as possible without sacrificing too much quality. For maps, trying to aim for the 2-3mb range is a good idea, even if your subscription allows for more.
15. Can I upload WebP images to Roll20?
Roll20 currently supports static WebP images, but not animated WebP files.
Conclusion
Understanding the maximum image size for Roll20 and how to optimize your images is crucial for smooth gameplay. Adhering to the file size limits for your subscription level is a must, but keeping your images as small as possible, while still maintaining detail, will help prevent lag and enhance the overall playing experience for everyone involved. By using the right file types, optimizing resolution, and following the recommended guidelines, you can ensure that your games run smoothly and that the visual assets you want to use are available to you. By following these guidelines you can make your next Roll20 experience the best one yet!