# server side annotation merging

**URL:** https://pdfjs.community/t/server-side-annotation-merging/167
**Category:** Technical Support
**Tags:** pdfjs-express
**Created:** [July 28, 2020, 3:21pm UTC](https://pdfjs.community/t/server-side-annotation-merging/167 "2020-07-28T15:21:13Z")
**Posts on this page:** 1
**Showing post:** 1

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### Author: ![ctamrakar](https://avatars.discourse-cdn.com/v4/letter/c/b4bc9f/32.png) [@ctamrakar](https://pdfjs.community/u/ctamrakar)
#### Post date: [July 28, 2020, 3:21pm UTC](https://pdfjs.community/t/server-side-annotation-merging/167/1 "2020-07-28T15:21:13Z")

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Currently we are evaluating pdf.js express to view and redact documents  
what is the recommended approach to burn redaction done on by pdf.js express  
permanently on the PDF at server side

we are looking preferably server side APIs such as .NET so that we can write our own web APIs

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