How To Edit ICC Color Profiles?

Discussion in 'Design and Graphics' started by Littleodie914, Nov 24, 2007.

  1. Littleodie914 macrumors 68000


    Jun 9, 2004
    Rochester, NY
    Hey guys, I've imported a friend's ICC color profile that's much better than any of the exiting ones, but that could use a *bit* of tweaking. Is there a way to alter a profile? It seems in the Color preferences pane you can either import pre-defined profiles or start completely from scratch, and I'm really surprised there's no way to do this out of the box. :confused:

  2. Kwill macrumors 68000


    Mar 10, 2003
    I assume you are talking about a monitor profile. But ICC profiles can be for printers, scanners and other input/output devices.

    Even within the same model, displays have varying color characteristics. Ambient light also alters the perception of color. As monitors age, backlit illumination fades, which of course affects color. Because of all these reasons, it is best to purchase a calibration device and generate your own profile. Depending on how critical, you may wish to recreate it on a weekly, or monthly basis. Starting from scratch is not such a bad thing. Apple allows users to select a default display or visually calibrate/create a new one. It doesn't take long. However, it is not as accurate as creating one with a device that measures the chromatic value of displayed color patches.

    There are too many variables to manipulate by hand. Some type of third party software is required for visual feedback. Apple provides a very basic ColorSync Utility in the Utility folder. It can list and repair color profiles, establish global default profiles, alter profiles within documents, and upload default RGB conversion for CMYK printers. Unfortunately, there is no visual feedback for any of these options. As you would expect from working in the dark, you can wind up causing more harm than good. Read the Help with the software before performing any changes.

    On my network I have various Xerox and HP printers. One of the latter came with the HP Advanced Profiling Solution. The software/hardware combo cost $500 separately but provides an interface for creating and editing ICC profiles for printers and displays. Designed to work only with the newest HP wide-format printers, it can edit ICC profiles for other networked printers, including Xerox. Printer calibration is dependent upon paper used.

    If you are borrowing other people's profiles, I doubt you are ready to invest in expensive profile editing solutions. My best advice would be to purchase the EyeOne LT ($140), Pantone Huey Pro ($99), or original Pantone Huey ($63) and generate your own profiles so you won't have to get into the details of editing. All these calibrators (and more expensive ones) are available from
  3. ChrisA macrumors G4

    Jan 5, 2006
    Redondo Beach, California
    The direct answer is, Yes profiles are just text files. Use a text editor.

    The more pactcal answer is to buy a colorimeter like Spyder 2 Express. It will create a monitor profile that is perfect for your monitor.
  4. musanim macrumors newbie

    May 14, 2009
    I tried opening a profile (an .icc file) with a text editor; it did not appear to be a text file. It looked like this:

    )@applmntrRGB XYZ ‡ $%acspAPPLAPPLˆ÷”-appldescPkdscmº<cprt¯#wtptrXYZ0gXYZDbXYZXrTRClaarg
    x vcgt òndin¨>chad(Ï,mmod)(bTRClgTRClaabg x aagg x descByHand_2016aug03mlucenUS ByHand_2016aug03textCopyright Apple Inc., 2016XYZ Û XYZ q¿9ägXYZ a#πʈXYZ #ÚêΩ–curv
    #(-26;@EJOTY^chmrw|ÅÜãêïöü£®≠≤∑º¡∆À–’€‡ÂÎˆ˚ %+ 28>ELRY`gnu|Éãíö°©±π¡…—Ÿ·ÈÚ˙&/8AKT]gqz Ñéò¢¨∂¡À’‡Îı!-8COZfr~äñ¢Æ∫«”‡Ï˘ -;HUcq~åö®∂ƒ”·˛+:IXgwÜñ¶µ≈’ˆ'7HYj{åùØ¿— +=OatÜô¨ø“¯2F ZnÇñ™æ“Á˚ % : O d y è § ∫ œ  ˚ ' = T j Å ò Æ ≈ ‹ Û"9QiÄò∞»·˘*C\uéß¿ŸÛ & @ Z t é © √ fi ¯.Idõ∂“Ó %A^zñ≥œÏ &Ca~õπ◊ı1Omå™…Ë&EdÑ √„#Ccɧ≈Â'Ijã≠Œ 4VxõΩ‡&Ilè≤÷˙AeâÆ“˜@eäØ’˙ Ekë∑›*Qwû≈Ï;cä≤⁄*R{£ÃıGpô√Ï@jîæÈ>iîøÍ A l ò ƒ !!H!u!°!Œ!˚"'"U"Ç"Ø"›# #8#f#î#¬#$$M$|$´$⁄% %8%h%ó «%˜&'&W&á&∑&Ë''I'z'´'‹ (±∑≥∏µπ∏∫∫ªººæ Ω¿æ¬ø√¿≈¡∆¬«√»ƒ…≈ ∆À«Ã»Õ…Œ ŒÀœÃ–Õ–Œ—œ“–“—”“””‘‘’’’÷÷◊÷ÿ◊Ÿÿ⁄Ÿ€⁄‹€›‹fi›flfi‡‡·‚‚‰„ʉËÂÍÊÏÁÔËÚÈÙÍ˜Î˘Ï˚Ì˛ÔÒÚÛÙ ... etc.
  5. chrfr macrumors 604

    Jul 11, 2009
    It's not possible to edit a color profile in a useful way with a text editor.

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