How to convert appres blob to binary file -> To save to sharepoint list

(2) Share

Report

Posted on by RY-13040810-0

Hi everyone, I'm using the attachment control to try to save a file.

But, I cannot convert the appres://bolbmanager/... to the binary file.

Here is my code:

Collect(
                colOrderItems,
                {
                    'MB ID': ThisItem.'MB ID',
                    Name: ThisItem.Name,
                    Quantity: _qty,
                    PricePer: Text(_unitPrice),
                    ShortText: _shortTextBase,
                    TotalPrice: _qty * _unitPrice,
                    Supplier: ThisItem.Supplier,
                    DeliveryDate: DateAdd(Today(), _leadDays),
                    ESN: ThisItem.ESN,
                    Unit: "",
                    GLAccount: "65900200",
                    CostCenter: Text(First(colRequestor).CostCenter),
                    AssetClass: "",
                    Item: "",
                    Picture: ThisItem.'Picture URL',
                    RequestID: "",
                    Size: TextInput3.Text,
                    // Inside your Collect/Patch logic, just save the raw Value
                    FileAttachments: ForAll(DataCardValue26_1.Attachments, { FileName: Name, FileData: JSON(Value, JSONFormat.IncludeBinaryData) })
                }
            )



But the data still showing like this in the collection:

So, I would like to know how to correctly convert it to binary?

Categories:

Building Power Apps

Error handling

General topics

I have the same question (0)

All responses (2)

Answers (1)

Sort by

Verified answer

Radovan Santa 53 on at

Like
a
(3)

Report
Copy link

Link copied!
It is not completely straightforward to convert the appres://blobmanager/... value directly into a native binary file inside Power Apps.

What I would recommend instead is using Base64, which is essentially binary content encoded as text. This makes it much easier to pass the file from Power Apps to other services, and then convert it back into a real file when needed.

Below is an example of an approach that works reliably.

Step by Step

1. Add an Attachment control

Upload your file using the Attachment control.

2. Add an Image control (hidden)

Place an Image control (it does not need to be visible) and set its Image property to:

3. Convert the content to Base64

On a button (e.g. OnSelect), convert the image content to JSON and extract only the Base64 part:

4. Use the Base64 output

The variable varBase64Only now contains the Base64 string.

This can be stored as text or sent to Power Automate / API and later converted back into a file.

What this means

This Base64 value is not “raw binary” inside Power Apps, but it represents the file content encoded as text.

That is sufficient for most scenarios, because it can be converted back into the original file when needed.

Why I recommend this approach

Handling the appres://blobmanager/... reference directly as binary in Power Apps is difficult and not reliable.

Using Base64 is a common and stable pattern for:

Power Apps → Power Automate

Power Apps → SharePoint

Power Apps → Azure Blob / APIs

Summary

You do not need to force Power Apps to produce raw binary.

Instead:

Convert the file to Base64

Pass it forward

Convert it back to a file where needed (e.g. using base64ToBinary() in Power Automate)

I hope this helps. If this resolves your issue, feel free to accept my solution.

Was this reply helpful? Yes No
Radovan Santa 53 on at

Like
a
(1)

Report
Copy link

Link copied!

You can chek my tutorial how to convert to base64 here:
https://www.radovansanta.com/blog/convert-attachments-to-base64-in-power-apps

Was this reply helpful? Yes No