# Document Resizing Textures contains error 512 is not a Power Of 2 **URL:** \ **Category:** Issues and Bug Reporting\ **Tags:** fortnite-creative, unreal-editor-for-fortnite, fortnite\ **Created:** [September 19, 2024, 10:10pm UTC](https://forums.unrealengine.com/t/document-resizing-textures-contains-error-512-is-not-a-power-of-2/2028723 "2024-09-19T22:10:59Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\ **Post date:** [September 19, 2024, 10:10pm UTC](https://forums.unrealengine.com/t/document-resizing-textures-contains-error-512-is-not-a-power-of-2/2028723/1 "2024-09-19T22:10:59Z")
### Summary UEFN Each of its dimensions must be a power of two (for example, 256x256, 512x512, 1024x1024, and so on). This is wrong. the square root of 512 is approximately 22.62 (16x16 =256) someone has added 256 +256 = 512 (32x32 = 1024). Just calculate and test on Microsoft Calculator → Scientific and use the Square Root button to test the numbers ### Please select what you are reporting on: Creative ### What Type of Bug are you experiencing? Documentation ### Steps to Reproduce 1. (512). Just calculate and test on Microsoft Calculator → Scientific 2. Enter 512 and use the Square Root button to test the numbers approx 22.67 1. Look at “as long as each dimension is a power of two. For example, 256x512, 512x1024” 512 is NOT of Power Of 2 ### Expected Result remove 1024 x 512 as its not power of 2 this is 256+256=512 256 x 256 = 65,536 and is Power of 2 ### Observed Result square root 512 is about 22.67 ### Platform(s) Windows 11 any PC ### Additional Notes Examples of acceptable image sizes are: 256x256, 512x512, or 1024x2048. Textures that don’t use the power of two will not be optimized, causing instability and poor island performance. WRONG 512x512 NOT POwER OF 2 [Resizing Textures | Unreal Editor for Fortnite Documentation | Epic Developer Community (epicgames.com)](https://dev.epicgames.com/documentation/en-us/uefn/resizing-textures-in-unreal-editor-for-fortnite) The 23 Power 2 lowest 484 closest 529 highest 576 To understand the of Power of 2 without a calculator use the table attachments and the problem with 512 look at the list [power2.pdf](https://forums.unrealengine.com/uploads/short-url/7k4H09jdoTsWFEmhhL16z69gTGs.pdf) (332.3 KB) ---
**Author:** ![Hardcawcanary](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/hardcawcanary/32/906569_2.png) [@Hardcawcanary](https://forums.unrealengine.com/u/Hardcawcanary)\ **Post date:** [September 22, 2024, 1:53am UTC](https://forums.unrealengine.com/t/document-resizing-textures-contains-error-512-is-not-a-power-of-2/2028723/3 "2024-09-22T01:53:34Z")
Yep, @Jimbohalo10 is 100% correct, seems like mathemagic, but simply using a calculator to check, one will see what numbers work. From something I read here, > **[Efficient materials for large worlds | Tutorial](https://dev.epicgames.com/community/learning/tutorials/DdzL/unreal-engine-fortnite-efficient-materials-for-large-worlds)** > > Improve the precision and performance of your materials with this one simple trick! I assume the optimisation of textures is relying on not triggering too many large 24bit floating point numbers from being generated. ---
**Author:** ![Bug-Reporter](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/bug-reporter/32/997076_2.png) [@Bug-Reporter](https://forums.unrealengine.com/u/Bug-Reporter)\ **Post date:** [January 9, 2025, 7:42pm UTC](https://forums.unrealengine.com/t/document-resizing-textures-contains-error-512-is-not-a-power-of-2/2028723/4 "2025-01-09T19:42:16Z")
FORT-794389 has been ‘Closed’. The issue reported is not caused by a bug in the tool.