https://github.com/imagemin/imagemin

You really shouldn't use this on the fly though. Minifying images can be a 
very slow process.

On Thursday, January 15, 2015 at 11:28:44 AM UTC+8, Ingwie Phoenix wrote:
>
> Hey everyone. 
>
> I am currently working on reducing the amount of data sent from my connect 
> based HTTP server to my client. So far I am very proud that 9/10 of my site 
> is cache-able, plus some PHP pages (used trough a fast-cgi connection) 
> being able to re-cache themselves if possible. This means that on average, 
> only 3.3KB is transfered - at all. However, if I open an image which is 
> stored in the database and read it to the client, it turns into a 200KB 
> transmission. Ouch! Now imagine there were 20 due to a user listing…I guess 
> you get where I am going. 
>
> For now I am using the compression Connect/Express middleware. Compression 
> is really, really neat. But it would be great if I could teach it to 
> compress images too! It works flawlessly with my PHP binding, which means 
> that I can just write my Yii stuff and don’t have to worry about the 
> compressing stuff; its done int he server for me. 
>
> But images… x.x 
>
> What good and easy-to-use tools are out there to optimize images? 
> Is there one that „rules them all“ - as in, one that can handle multiple 
> image formats? 
>
> Would be great to know! 
>
> Kind regards, Ingwie

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