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Editorial Team
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Asked: 2026-05-13T16:53:07+00:00

We’re building a web-based application that requires heavy image processing. We’d like this processing

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We’re building a web-based application that requires heavy image processing. We’d like this processing load to be on the client as much as possible and we’d like to support as much platforms (even mobiles) as much as possible.

Yeah, I know, wishful thinking

Here’s the info:

  1. Image processing is rasterization from some data. Think like creating a PNG image from a PDF file.

  2. We don’t have a lot of server power. So client-side processing is a bit of a must.

So, we’re considering:

  1. Flash – most widespread, but from what i read has lackluster development tools. (and no iPhone/iPad support for now).

  2. Silverlight – allows us to use .NET CLR, so a big ++ (a lot of code is in .NET). But is not supported for most mobiles ( rumored android support in the future)

  3. HTML5 + Javascript – probably the most “portable” option. The problem is having to rewrite all that image processing code in Javascript.

Any thoughts or architectures that might help?
Clarification: I don’t need further ideas on what libraries are available for Silverlight and Javascript. My dilemma is

  • choosing Silverlight means no support for most mobiles
  • choosing Flash means we have to redevelop most of our code AND no iPhone/iPad support
  • HTML5 + Javascript we have to redevelop most of our code and not fully supported yet in all browsers
  • choosing two (Silverlight + Flash) will be too costly

Any out-of-the-box or bright ideas / alternatives I might be missing?

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1 Answer

  1. Editorial Team

    This is the sort of issue that software architects run up against all the time. As per usual, there is no ideal solution. You need to select which compromise is most acceptable to your business.

    To summarise your problem, most of your image processing software is written in .NET. You’d like to run it client-side on mobile devices, but there is limited .NET penetration on mobiles. The alternatives with higher penetration (eg. Flash) would require you to re-write your code, which you can’t afford to do. In addition, these alternatives are not supported on the iPhone/iPad.

    What you ideally want is a way to run all your .NET code on most existing platforms, including iPhone/iPad. I can say with some confidence that no such solution currently exists – there is no “silver bullet” answer that you have overlooked.

    So what will you need to compromise on? It seems to me that even if you redevelop in flash, you are still going to miss out on a major market (iPhone). And redeveloping software is extremely costly anyway.

    Here is the best solution to your problem – you need to compromise on your “client side execution” constraint. If you execute server side, you get to keep your existing code, and also get to deploy to just about every mobile client, including the iPhone.

    You said your server power is limited, but server processing power is cheap when compared to software development costs. Indeed, it is not all that expensive to outsource your server component and just pay for what you use. It’s most likely that your application will only have low penetration to start off with. As the business grows, you will be able to afford to upgrade your server capacity.

    I believe this is the best solution to your problem.

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