Hi Sanjeev,
Based on the code posted by Avinash above, try to change the "align-middle" to "align-left", or maybe just delete it instead.

to increase or decrease the barcode, try to reduce the style="width:100% to some numbers you find it fit.

Don't hesitate to tell back the result

Thanks for the Reply Altela,
I tried the solution but it does not work. Wish I could post the picture here.

I can increase or decrease the width however I can not align it to left or change its position at all.

Could you put your code here please? maybe i can try to reproduce your issue and figure it out from my machine

<t t-name="product.report_simple_barcode">
<div style="width: 100%; display: inline-table; height: 4rem;">
<table class="table table-bordered mb-0" style="border: 2px solid black;">
<tr>
<th class="table-active text-left" style="height: 4rem;">
<strong t-field="product.display_name"/>
</th>
</tr>
<tr>
<td class="text-center align-left" style="height: 4rem;">
<t t-if="product.barcode">
Total Parts
<img alt="Barcode" t-if="len(product.barcode) == 13" t-att-src="'/report/barcode/?type=%s&amp;value=%s&amp;width=%s&amp;height=%s' % ('EAN13', quote_plus(product.barcode or ''), 600, 150)" style="width:100%;height:4rem;"/>
<img alt="Barcode" t-elif="len(product.barcode) == 8" t-att-src="'/report/barcode/?type=%s&amp;value=%s&amp;width=%s&amp;height=%s' % ('EAN8', quote_plus(product.barcode or ''), 600, 150)" style="width:100%;height:4rem;"/>
<img alt="Barcode" t-else="" t-att-src="'/report/barcode/?type=%s&amp;value=%s&amp;width=%s&amp;height=%s' % ('Code128', quote_plus(product.barcode or ''), 600, 150)" style="width:105%;height:6rem"/>
<span t-field="product.barcode"/>
</t>
<t t-else=""><span class="text-muted">No barcode available</span></t>
</td>
</tr>
</table>
</div>
</t>

Sanjev,
I successfully reproduce your problem in my machine, it's seems like there are no error but you are not configure your barcode paper report yet so it prints to a large paper size (mostly in A4 size as i already tested).

Since the answer is a bit long, i put a step-by-step on my blog. Here's the link, https://www.projectflakes.com/2022/04/how-to-customize-your-odoo-barcode.html

You might skipping the step number 3 here, please tell me the result after you done the steps

Appreciate your help Altela.
I have configured my label correctly and its fits on the label I am using 55X50. My issue is the barcode. The width of the barcode is squeezed due to the label size so the scanner I am using can not scan it. If I try to increase the width of the barcode it doesn't fit on the label because the barcode placed in the centre and I am unable to align it to the left.
If it makes sense.

Understood,
In my previous experience I too had the same old problem where i tried to shrink the "barcode box" width but somehow it cannot be scanned using barcode scanner too. The farthest things i can achieve customizing barcode box is only reducing it's height, but not the width.

Since i cannot shrink it for customization in views, i played around with the output report and gladly it working good for my case. I also need a bit customization when printing it out with Google Chrome, by setting the "Scale" value to "Default" so it can be scanned.

Maybe you can try this one with chrome, as my last suggestion since i don't have any further troubleshot ideas XD

https://drive.google.com/file/d/1oOEtlRaVvtceCCvO5tztgGtkbiwZ-jvF/view?usp=sharing

Thanks for the suggestion. I will keep playing with it to see if it works, somehow.