Forum Discussion
BASE64 Images Not Displaying in Power BI Report
I am facing an issue with Power BI reports today:
- Reports that use BASE64 encoding to embed images suddenly stopped displaying them.
- This method worked fine before, but starting today, no images appear.
- I tested on multiple computers and with different reports, but the issue persists everywhere.
- This suggests it is not a single report problem, but a broader functionality issue.
Troubleshooting already attempted:
- Updated to the latest Power BI Desktop.
- Republished reports to Power BI Service.
- Tested across different machines and reports.
None of these steps resolved the issue.
👉 Could anyone confirm if there have been recent changes to BASE64 image support in Power BI, or suggest a workaround?
9 Replies
srisoAdvocate I
It is working for me now. I might have done a few changes but I think when I generated the base64 code again today using the same image, the string started with “data:image/png;base64,” instead of the earlier “data:image;base64,”. Once I made that change I had to make sure the Data category for the field was set to “Image URL”.
FYI, my images were small to begin with, and Base64 was only 8K characters.
Not sure if the encoding/decoding standards changed.- sriso
Text editor won't show the exact text I entered. I had to replace "image" with "image/png". I am assuming this only applies to .png images.
sriso wrote:It is working for me now. I might have done a few changes but I think when I generated the base64 code again today using the same image, the string started with “data:image/png;base64,” instead of the earlier “data:image;base64,”. Once I made that change I had to make sure the Data category for the field was set to “Image URL”.
FYI, my images were small to begin with, and Base64 was only 8K characters.
Not sure if the encoding/decoding standards changed.Thanks for this. I added "/png" to my base64 (all of mine are png images) and they went back to rendering as before. Great call!
- Mauro89
Super User
Hi CheckQuery,
my embeddings are still working and Iam not aware of any changes.
Have you checked if your embeddings exceeding the Power BI 32766 character limit?
Check for details on it the blog from Chris Webb: Chris Webb's BI Blog: Storing Large Images In Power BI DatasetsBest regards!
PS: If you find this post helpful consider leaving kudos or mark it as solution
Running into the same issue. Before yesterday even my images with > 32k characters were rendering fine.
Today I resized my images to make sure all are below that count and they still won't render in service. The same images in a desktop live connect render fine, but the published report does not.
v-pnaroju-msftCommunity Support
Thankyou, Mauro89, OutdoorIntel and sriso for your responses.
Hi CheckQuery,
We appreciate your inquiry through the Microsoft Fabric Community Forum.
We would like to inquire whether have you got the chance to check the solutions provided by Mauro89, OutdoorIntel and sriso to resolve the issue. We hope the information provided helps to clear the query. Should you have any further queries, kindly feel free to contact the Microsoft Fabric community.
Thank you.- v-pnaroju-msft
Hi CheckQuery,
We are following up to see if what we shared solved your issue. If you need more support, please reach out to the Microsoft Fabric community.
Thank you.
