q_jpegmini tranformation problems

Andreas Wellén

May 27, 2014 12:53

Hi,

I'm trying to use the jpegmini transformation on one of my images without luck. The following URL works:

• http://res.cloudinary.com/wellen/image/upload/c_fit,w_577,h_577/v1401193134/1088531.jpg

But this gives me a error message stating that theres a error with the image:

• http://res.cloudinary.com/wellen/image/upload/s--Q2hzuyWj--/q_jpegmini,c_fit,w_577,h_577/v1401193134/1088531.jpg

Looking at the documentation (http://cloudinary.com/documentation/jpegmini_image_compression_addon) the URL looks correct, can you tell me what I'm doing wrong? The sample works.

• http://res.cloudinary.com/wellen/image/upload/s--Q2hzuyWj--/c_fit,h_577,q_jpegmini,w_577/v1401128403/sample.jpg

BR,

Andreas Wellén

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  Itay Taragano

  May 29, 2014 07:22

  Hi Andreas,

  The JPEG mini Addon requires your URL to be signed, Only URLs with a valid signature that matches the requested image manipulation will be approved for on-the-fly image manipulation and delivery.

  The  s--Q2hzuyWj-- part is the signature component, and is unique and is only valid to this specific image and for this specific account (the 'demo' account).
  
  The signature is a base64 encoding of a SHA1 digest of your image public ID and transformation string concatenated with the account's API secret. The signature is automatically generated by Cloudinary's client integration SDKs (by setting the sign_url parameter to true ).

  For more information:
  
  http://cloudinary.com/documentation/jpegmini_image_compression_addon#signed_urls

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  Ryan McGeary

  August 10, 2014 17:08

  I'm seeing a similar problem. Even with sign\_url set to true, I'm getting an HTTP 420 response when trying to set jpegmini compression. Without jpegmini compression, image transformations work as expected.

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  Ryan McGeary

  August 10, 2014 17:12

  Nevermind. I didn't realize jpegmini was an add-on service. All better now.

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