CODEWITHSUNDEEP
javascriptimage
Fabian
Fabian

Reputation: 1844

Creating/modifying images in JavaScript

Is it possible to dynamically create and modify images on a per pixel level in JavaScript (on client side)? Or has this to be done with server based languaged, such as PHP?

My use case is as follows:

When searching in the web I just found posts about using IE's filtering method, but didn't find anything about image editing functions in JavaScript.

Upvotes: 7

Views: 9690

Answers (7)

Marijn
Marijn

Reputation: 2096

Also look at data URIs (though IE versions below 8 don't support them, unfortunately!)

Upvotes: 1

Jataro
Jataro

Reputation: 2588

You may want to check out Processing.js. John Resig of jQuery fame wrote it. It supports pixel processing, unfortunately only Firefox 3 can handle it sufficiently.

Upvotes: 2

Arno
Arno

Reputation: 2239

Local image manipulation in JavaScript should be possible - have a look at Defender of the Favicon. ;-) The question is how to get the original image from the file system into your page (I don't know of any other way than doing a HTTP upload to the server first).

Upvotes: 0

PaulF
PaulF

Reputation: 7

Try Allicorn's Image Retargetter - it sounds like that's what you're looking for.

Upvotes: 0

gizmo
gizmo

Reputation: 11909

You can imagine a set of JS tools that will allow the user to define what kind of transformation he wants to do, but the final work of transformation MUST be done on a server side. JS on the client side is unable to create a file, for security reason.

Upvotes: 0

Aaron Jensen
Aaron Jensen

Reputation: 6060

Some browsers support the canvas: http://developer.mozilla.org/En/Drawing_Graphics_with_Canvas

Upvotes: 8

Sargun Dhillon
Sargun Dhillon

Reputation: 1848

This has to be done on the server side. One thing you might look at doing is allowing all the editing to go on client side, and then in the end POST the final image (via AJAX) to the server to allow it to return it to you as the correct MIME type, and correctly packed.

Upvotes: 2

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