Hellman, Matthew wrote:
The answer to your problem seems to be making sure one and only one content-type header is returned with the image, and that it has the correct value (e.g. Content-Type: image/jpeg or whatever).
Right, and it just struck me that this is probably a web server configuration issue. A sensibly configured server should send the correct content-type header out from the file extension.
Please see the attached file, which is the config file for this purpose on my own (Apache) server. There you can see that a jpg extension results in content-type image/jpeg, a png extension gives image/png etc.
-- Gunnar Hjalmarsson Email: http://www.gunnar.cc/cgi-bin/contact.pl
# This is a comment. I love comments. # This file controls what Internet media types are sent to the client for # given file extension(s). Sending the correct media type to the client # is important so they know how to handle the content of the file. # Extra types can either be added here or by using an AddType directive # in your config files. For more information about Internet media types, # please read RFC 2045, 2046, 2047, 2048, and 2077. The Internet media type # registry is at <http://www.iana.org/assignments/media-types/>. # MIME type Extension application/EDI-Consent application/EDI-X12 application/EDIFACT application/activemessage application/andrew-inset ez application/applefile application/atomicmail application/batch-SMTP application/beep+xml application/cals-1840 application/commonground application/cybercash application/dca-rft application/dec-dx application/dvcs application/eshop application/http application/hyperstudio application/iges application/index application/index.cmd application/index.obj application/index.response application/index.vnd application/iotp application/ipp application/isup application/font-tdpfr application/mac-binhex40 hqx application/mac-compactpro cpt application/macwriteii application/marc application/mathematica application/mathematica-old application/msword doc application/news-message-id application/news-transmission application/ocsp-request application/ocsp-response application/octet-stream bin dms lha lzh exe class so dll application/oda oda application/ogg ogg application/parityfec application/pdf pdf application/pgp-encrypted application/pgp-keys application/pgp-signature application/pkcs10 application/pkcs7-mime application/pkcs7-signature application/pkix-cert application/pkix-crl application/pkixcmp application/postscript ai eps ps application/prs.alvestrand.titrax-sheet application/prs.cww application/prs.nprend application/qsig application/remote-printing application/riscos application/rtf rtf application/sdp application/set-payment application/set-payment-initiation application/set-registration application/set-registration-initiation application/sgml application/sgml-open-catalog application/sieve application/slate application/smil smi smil application/timestamp-query application/timestamp-reply application/vemmi application/vnd.3M.Post-it-Notes application/vnd.FloGraphIt application/vnd.accpac.simply.aso application/vnd.accpac.simply.imp application/vnd.acucobol application/vnd.aether.imp application/vnd.anser-web-certificate-issue-initiation application/vnd.anser-web-funds-transfer-initiation application/vnd.audiograph application/vnd.businessobjects application/vnd.bmi application/vnd.canon-cpdl application/vnd.canon-lips application/vnd.claymore application/vnd.commerce-battelle application/vnd.commonspace application/vnd.comsocaller application/vnd.contact.cmsg application/vnd.cosmocaller application/vnd.cups-postscript application/vnd.cups-raster application/vnd.cups-raw application/vnd.ctc-posml application/vnd.cybank application/vnd.dna application/vnd.dpgraph application/vnd.dxr application/vnd.ecdis-update application/vnd.ecowin.chart application/vnd.ecowin.filerequest application/vnd.ecowin.fileupdate application/vnd.ecowin.series application/vnd.ecowin.seriesrequest application/vnd.ecowin.seriesupdate application/vnd.enliven application/vnd.epson.esf application/vnd.epson.msf application/vnd.epson.quickanime application/vnd.epson.salt application/vnd.epson.ssf application/vnd.ericsson.quickcall application/vnd.eudora.data application/vnd.fdf application/vnd.ffsns application/vnd.framemaker application/vnd.fsc.weblaunch application/vnd.fujitsu.oasys application/vnd.fujitsu.oasys2 application/vnd.fujitsu.oasys3 application/vnd.fujitsu.oasysgp application/vnd.fujitsu.oasysprs application/vnd.fujixerox.ddd application/vnd.fujixerox.docuworks application/vnd.fujixerox.docuworks.binder application/vnd.fut-misnet application/vnd.grafeq application/vnd.groove-account application/vnd.groove-identity-message application/vnd.groove-injector application/vnd.groove-tool-message application/vnd.groove-tool-template application/vnd.groove-vcard application/vnd.hhe.lesson-player application/vnd.hp-HPGL application/vnd.hp-PCL application/vnd.hp-PCLXL application/vnd.hp-hpid application/vnd.hp-hps application/vnd.httphone application/vnd.hzn-3d-crossword application/vnd.ibm.afplinedata application/vnd.ibm.MiniPay application/vnd.ibm.modcap application/vnd.informix-visionary application/vnd.intercon.formnet application/vnd.intertrust.digibox application/vnd.intertrust.nncp application/vnd.intu.qbo application/vnd.intu.qfx application/vnd.irepository.package+xml application/vnd.is-xpr application/vnd.japannet-directory-service application/vnd.japannet-jpnstore-wakeup application/vnd.japannet-payment-wakeup application/vnd.japannet-registration application/vnd.japannet-registration-wakeup application/vnd.japannet-setstore-wakeup application/vnd.japannet-verification application/vnd.japannet-verification-wakeup application/vnd.koan application/vnd.lotus-1-2-3 application/vnd.lotus-approach application/vnd.lotus-freelance application/vnd.lotus-notes application/vnd.lotus-organizer application/vnd.lotus-screencam application/vnd.lotus-wordpro application/vnd.mcd application/vnd.mediastation.cdkey application/vnd.meridian-slingshot application/vnd.mif mif application/vnd.minisoft-hp3000-save application/vnd.mitsubishi.misty-guard.trustweb application/vnd.mobius.daf application/vnd.mobius.dis application/vnd.mobius.msl application/vnd.mobius.plc application/vnd.mobius.txf application/vnd.motorola.flexsuite application/vnd.motorola.flexsuite.adsi application/vnd.motorola.flexsuite.fis application/vnd.motorola.flexsuite.gotap application/vnd.motorola.flexsuite.kmr application/vnd.motorola.flexsuite.ttc application/vnd.motorola.flexsuite.wem application/vnd.mozilla.xul+xml application/vnd.ms-artgalry application/vnd.ms-asf application/vnd.ms-excel xls application/vnd.ms-lrm application/vnd.ms-powerpoint ppt application/vnd.ms-project application/vnd.ms-tnef application/vnd.ms-works application/vnd.mseq application/vnd.msign application/vnd.music-niff application/vnd.musician application/vnd.netfpx application/vnd.noblenet-directory application/vnd.noblenet-sealer application/vnd.noblenet-web application/vnd.novadigm.EDM application/vnd.novadigm.EDX application/vnd.novadigm.EXT application/vnd.osa.netdeploy application/vnd.palm application/vnd.pg.format application/vnd.pg.osasli application/vnd.powerbuilder6 application/vnd.powerbuilder6-s application/vnd.powerbuilder7 application/vnd.powerbuilder7-s application/vnd.powerbuilder75 application/vnd.powerbuilder75-s application/vnd.previewsystems.box application/vnd.publishare-delta-tree application/vnd.pvi.ptid1 application/vnd.pwg-xhtml-print+xml application/vnd.rapid application/vnd.s3sms application/vnd.seemail application/vnd.shana.informed.formdata application/vnd.shana.informed.formtemplate application/vnd.shana.informed.interchange application/vnd.shana.informed.package application/vnd.sss-cod application/vnd.sss-dtf application/vnd.sss-ntf application/vnd.sun.xml.writer sxw application/vnd.sun.xml.writer.template stw application/vnd.sun.xml.calc sxc application/vnd.sun.xml.calc.template stc application/vnd.sun.xml.draw sxd application/vnd.sun.xml.draw.template std application/vnd.sun.xml.impress sxi application/vnd.sun.xml.impress.template sti application/vnd.sun.xml.writer.global sxg application/vnd.sun.xml.math sxm application/vnd.street-stream application/vnd.svd application/vnd.swiftview-ics application/vnd.triscape.mxs application/vnd.trueapp application/vnd.truedoc application/vnd.tve-trigger application/vnd.ufdl application/vnd.uplanet.alert application/vnd.uplanet.alert-wbxml application/vnd.uplanet.bearer-choice-wbxml application/vnd.uplanet.bearer-choice application/vnd.uplanet.cacheop application/vnd.uplanet.cacheop-wbxml application/vnd.uplanet.channel application/vnd.uplanet.channel-wbxml application/vnd.uplanet.list application/vnd.uplanet.list-wbxml application/vnd.uplanet.listcmd application/vnd.uplanet.listcmd-wbxml application/vnd.uplanet.signal application/vnd.vcx application/vnd.vectorworks application/vnd.vidsoft.vidconference application/vnd.visio application/vnd.vividence.scriptfile application/vnd.wap.sic application/vnd.wap.slc application/vnd.wap.wbxml wbxml application/vnd.wap.wmlc wmlc application/vnd.wap.wmlscriptc wmlsc application/vnd.webturbo application/vnd.wrq-hp3000-labelled application/vnd.wt.stf application/vnd.xara application/vnd.xfdl application/vnd.yellowriver-custom-menu application/whoispp-query application/whoispp-response application/wita application/wordperfect5.1 application/x-bcpio bcpio application/x-bzip2 bz2 application/x-cdlink vcd application/x-chess-pgn pgn application/x-compress application/x-cpio cpio application/x-csh csh application/x-director dcr dir dxr application/x-dvi dvi application/x-futuresplash spl application/x-gtar gtar application/x-gzip gz tgz application/x-hdf hdf application/x-javascript js application/x-kword kwd kwt application/x-kspread ksp application/x-kpresenter kpr kpt application/x-kchart chrt application/x-killustrator kil application/x-koan skp skd skt skm application/x-latex latex application/x-netcdf nc cdf # This conflicts with audio/x-pn-realaudio-plugin, which is commented out below. application/x-rpm rpm application/x-sh sh application/x-shar shar application/x-shockwave-flash swf application/x-stuffit sit application/x-sv4cpio sv4cpio application/x-sv4crc sv4crc application/x-tar tar application/x-tcl tcl application/x-tex tex application/x-texinfo texinfo texi application/x-troff t tr roff application/x-troff-man man application/x-troff-me me application/x-troff-ms ms application/x-ustar ustar application/x-wais-source src application/x400-bp application/xhtml+xml xhtml xht application/xml application/xml-dtd application/xml-external-parsed-entity application/zip zip audio/32kadpcm audio/basic au snd audio/g.722.1 audio/l16 audio/midi mid midi kar audio/mp4a-latm audio/mpa-robust audio/mpeg mpga mp2 mp3 audio/parityfec audio/prs.sid audio/telephone-event audio/tone audio/vnd.cisco.nse audio/vnd.cns.anp1 audio/vnd.cns.inf1 audio/vnd.digital-winds audio/vnd.everad.plj audio/vnd.lucent.voice audio/vnd.nortel.vbk audio/vnd.nuera.ecelp4800 audio/vnd.nuera.ecelp7470 audio/vnd.nuera.ecelp9600 audio/vnd.octel.sbc audio/vnd.qcelp audio/vnd.rhetorex.32kadpcm audio/vnd.vmx.cvsd audio/x-aiff aif aiff aifc audio/x-mpegurl m3u audio/x-pn-realaudio ram rm #audio/x-pn-realaudio-plugin rpm audio/x-realaudio ra audio/x-wav wav chemical/x-pdb pdb chemical/x-xyz xyz image/bmp bmp image/cgm image/g3fax image/gif gif image/ief ief image/jpeg jpeg jpg jpe image/naplps image/png png image/prs.btif image/prs.pti image/tiff tiff tif image/vnd.cns.inf2 image/vnd.djvu djvu djv image/vnd.dwg image/vnd.dxf image/vnd.fastbidsheet image/vnd.fpx image/vnd.fst image/vnd.fujixerox.edmics-mmr image/vnd.fujixerox.edmics-rlc image/vnd.microsoft.icon ico image/vnd.mix image/vnd.net-fpx image/vnd.svf image/vnd.wap.wbmp wbmp image/vnd.xiff image/x-cmu-raster ras image/x-portable-anymap pnm image/x-portable-bitmap pbm image/x-portable-graymap pgm image/x-portable-pixmap ppm image/x-rgb rgb image/x-xbitmap xbm image/x-xpixmap xpm image/x-xwindowdump xwd message/delivery-status message/disposition-notification message/external-body message/http message/news message/partial message/rfc822 message/s-http model/iges igs iges model/mesh msh mesh silo model/vnd.dwf model/vnd.flatland.3dml model/vnd.gdl model/vnd.gs-gdl model/vnd.gtw model/vnd.mts model/vnd.vtu model/vrml wrl vrml multipart/alternative multipart/appledouble multipart/byteranges multipart/digest multipart/encrypted multipart/form-data multipart/header-set multipart/mixed multipart/parallel multipart/related multipart/report multipart/signed multipart/voice-message text/calendar text/css css text/directory text/enriched text/html html htm text/parityfec text/plain asc txt text/prs.lines.tag text/rfc822-headers text/richtext rtx text/rtf rtf text/sgml sgml sgm text/tab-separated-values tsv text/t140 text/uri-list text/vnd.DMClientScript text/vnd.IPTC.NITF text/vnd.IPTC.NewsML text/vnd.abc text/vnd.curl text/vnd.flatland.3dml text/vnd.fly text/vnd.fmi.flexstor text/vnd.in3d.3dml text/vnd.in3d.spot text/vnd.latex-z text/vnd.motorola.reflex text/vnd.ms-mediapackage text/vnd.wap.si text/vnd.wap.sl text/vnd.wap.wml wml text/vnd.wap.wmlscript wmls text/x-setext etx text/xml xml xsl text/xml-external-parsed-entity video/mp4v-es video/mpeg mpeg mpg mpe video/parityfec video/pointer video/quicktime qt mov video/vnd.fvt video/vnd.motorola.video video/vnd.motorola.videop video/vnd.mpegurl mxu video/vnd.mts video/vnd.nokia.interleaved-multimedia video/vnd.vivo video/x-msvideo avi video/x-sgi-movie movie x-conference/x-cooltalk ice
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