# Base64 image issue in the signed / unsigned certs

**URL:** <https://community.blockcerts.org/t/base64-image-issue-in-the-signed-unsigned-certs/2410>\
**Category:** Technical\
**Created:** [March 19, 2020, 5:08am UTC](https://community.blockcerts.org/t/base64-image-issue-in-the-signed-unsigned-certs/2410 "2020-03-19T05:08:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![dekts](https://avatars.discourse-cdn.com/v4/letter/d/977dab/32.png) [@dekts](https://community.blockcerts.org/u/dekts)\
**Post date:** [March 19, 2020, 5:08am UTC](https://community.blockcerts.org/t/base64-image-issue-in-the-signed-unsigned-certs/2410/1 "2020-03-19T05:08:31Z")

</div>

I added the base64 image for the logo in the CSV displayHTML field then the `<img src(unknown) />` display in the signed certificate viewer.

when I have checked the test.json first with the added base64 image then works well when I’ve decoded.

after created the unsigned certificate and again taken the base64 image portion from JSON and decode it in the same tool but not worked because of `\n` so when I have removed the `\n` from base64 then the logo display but only half logo displayed.

It means some correction has been made by cert-tools while we generate the unsigned certificates using `instantiate-certificate-batch -c conf.ini`

I want to know what is the issue occurs while generating the unsigned certificate from CSV.

When I tried using different logos when it works fine.