# Construction plan does not sharpen up when zooming in

**URL:** <https://pdfjs.community/t/construction-plan-does-not-sharpen-up-when-zooming-in/336>\
**Category:** Technical Support\
**Tags:** pdfjs-express\
**Created:** [October 14, 2020, 12:58pm UTC](https://pdfjs.community/t/construction-plan-does-not-sharpen-up-when-zooming-in/336 "2020-10-14T12:58:02Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![M.A](https://avatars.discourse-cdn.com/v4/letter/m/fbc32d/32.png) [@M.A](https://pdfjs.community/u/M.A)\
**Post date:** [October 14, 2020, 12:58pm UTC](https://pdfjs.community/t/construction-plan-does-not-sharpen-up-when-zooming-in/336/1 "2020-10-14T12:58:02Z")

</div>

**PDF.js Express Version**

**Detailed description of issue**  
{Hi!  
I am building a PoC using ReactJS. The app should be able to render the plan in full detail when zooming in, but it does not. When zooming to a certain level the WebViewer stops rendering the PDF in better quality and detail. 😮

 ![plan_poc.PNG](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/6ff795dd91574e5df8785c4e2cecdf212684c690.jpeg)

How to fix it and get better performance?  
}

**Expected behaviour**  
{The functionality works better (although sometimes laggy, but at least it renders properly) in the demo link: `https://pdfjs.express/samples/viewing/viewing/`.  
(Cant add a second image of it due to rules)  
}

**Link to document**  
{Provide a link to the document in question if possible}

**Code snippet**  
{  
useEffect(() =\> {  
WebViewer({  
path: ‘/webviewer/lib’,  
initialDoc: defaultFilePath.path,  
},  
viewer.current,  
).then((instance) =\> {  
var Feature = instance.Feature;  
instance.enableFeatures([Feature.FilePicker]);  
setInstance(instance)  
});  
}, [] );  
}

---

<div class="post-metadata">

**Author:** ![M.A](https://avatars.discourse-cdn.com/v4/letter/m/fbc32d/32.png) [@M.A](https://pdfjs.community/u/M.A)\
**Post date:** [October 14, 2020, 12:59pm UTC](https://pdfjs.community/t/construction-plan-does-not-sharpen-up-when-zooming-in/336/2 "2020-10-14T12:59:39Z")

</div>

Here can be seen the render quality of the same plan when rendered on `https://pdfjs.express/samples/viewing/viewing/`

 ![plan_demo](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/d6a7fa1d44234fcf0cb1feac3ad53acd8bf9d936.png)

---

<div class="post-metadata">

**Author:** ![Logan](https://yyz1.discourse-cdn.com/flex031/user_avatar/pdfjs.community/logan/32/13_2.png) [@Logan](https://pdfjs.community/u/Logan)\
**Post date:** [October 14, 2020, 2:28pm UTC](https://pdfjs.community/t/construction-plan-does-not-sharpen-up-when-zooming-in/336/3 "2020-10-14T14:28:23Z")

</div>

Hi there!

This was fixed in version 7.1.2, so upgrading should fix your issue.

Thanks,  
Logan