# Why it takes 2-3 minutes to save annotations to a PDF file?

**URL:** <https://pdfjs.community/t/why-it-takes-2-3-minutes-to-save-annotations-to-a-pdf-file/563>\
**Category:** Technical Support\
**Created:** [March 4, 2021, 9:09am UTC](https://pdfjs.community/t/why-it-takes-2-3-minutes-to-save-annotations-to-a-pdf-file/563 "2021-03-04T09:09:01Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![SunnyTokyo](https://avatars.discourse-cdn.com/v4/letter/s/f0a364/32.png) [@SunnyTokyo](https://pdfjs.community/u/SunnyTokyo)\
**Post date:** [March 4, 2021, 9:09am UTC](https://pdfjs.community/t/why-it-takes-2-3-minutes-to-save-annotations-to-a-pdf-file/563/1 "2021-03-04T09:09:01Z")

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**PDF.js Express Version**  
“description”: “PDFJS Express”,  
“version”: “7.2.2”,

**Detailed description of issue**  
We use WebViewer to save annotations to a document, and we found that in some cases where PDF files with more than 30 pages costs 2-3 minutes to add and save only one small annotation. Is it expected situation or is there any faster practice?

**Expected behaviour**  
Other files are normally saved in a several seconds.

**Does your issue happen with every document, or just one?**  
It randomly occurs especially in the cases of larger sized PDF files.

**Link to document**  
[https://www.chugai-pharm.co.jp/cont\_file\_dl.php?f=FILE\_1\_48.pdf&src=[%0],[%1](https://www.chugai-pharm.co.jp/cont_file_dl.php?f=FILE_1_48.pdf&src=%5B%250%5D,%5B%251)]&rep=127,48

**Code snippet**  
{Provide a relevant code snippet}

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