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General Opera information

User-Agent strings

Please note that some additional user agent strings, including those from Opera 6 for Symbian, are now available on another page.

Opera Embedded for Linux devices

Other user-agent strings

For reference, here are the user agent strings given out by Symbian Web, a browser supplied with older EPOC devices but not based on Opera:

HTTP request header examples

Opera 5.x initial GET request

Accept: text/html, image/jpeg, image/gif, image/x-xbitmap, */*
Connection: Keep-Alive
Host: symbian.com
User-Agent: Opera/v5.12 (EPOC; U)  [en]

Opera 5.x reload GET request

Accept: text/html, image/jpeg, image/gif, image/x-xbitmap, */*
Cache-Control: no-cache
Connection: Keep-Alive, TE
Host: symbian.com
User-Agent: Mozilla/4.1 (compatible; MSIE 5.0; EPOC) Opera v5.12  [en]

Opera 5.x check-modified GET request

Accept: text/html, image/jpeg, image/gif, image/x-xbitmap, */*
Connection: Keep-Alive, TE
Host: symbian.com
If-Modified-Since: Sun, 13 May 2001 13:17:45 GMT
User-Agent: Mozilla/4.76 (EPOC; U) Opera v5.12  [en]

Opera 5.x HTTP POST header (without enctype attribute)

Accept: text/html, image/jpeg, image/gif, image/x-xbitmap, */*
Connection: Keep-Alive, TE
Content-length: 1471
Content-type: application/x-www-form-urlencoded
Host: symbian.com
User-Agent: Opera/v5.12 (EPOC; U)  [en]

Opera 5.x HTTP POST header (with enctype="multipart/form-data" attribute)

Accept: text/html, image/jpeg, image/gif, image/x-xbitmap, */*
Connection: Keep-Alive, TE
Content-length: 1471
Content-Type: multipart/form-data; boundary=_OPERAB__-7zCfYwSakUOxF+pV4GqEWz
Host: symbian.com
User-Agent: Mozilla/3.0 (EPOC; U) Opera v5.12  [en]

Opera 3.62 GET request (HTTP/1.0)

Accept: image/gif, image/x-xbitmap, image/jpeg, */*
Host: symbian.com
User-Agent: Mozilla/4.51 (compatible; Opera 3.62; EPOC; 480x160)

Opera 3.62 HTTP POST header (without enctype attribute)

Accept: image/gif, image/x-xbitmap, image/jpeg, */*
Content-length: 2774
Content-type: application/x-www-form-urlencoded
Host: symbian.com
User-Agent: Mozilla/3.0 (compatible; Opera 3.62; EPOC; 640x360)

Opera 3.62 HTTP POST header (with enctype="multipart/form-data" attribute)

Accept: image/gif, image/x-xbitmap, image/jpeg, */*
Content-length: 2774
Content-Type: multipart/form-data; boundary=_OPERAB__-3A7zBpuWmMJ14FMhXHvDSw
Host: symbian.com
User-Agent: Mozilla/4.51 (compatible; Opera 3.62; EPOC; 320x200)

Determining the device, resolution and colours

To reduce the length of this page, information on determining the machine will now appear in a separate document in the Articles section of this site.

Opera quick facts

• Opera 3.62 does not support Mailto links
• Opera 3.62 does not let a user know where a link points to before they follow it.
• Opera 3.62 does not support multiple windows.
• Opera 3.62 does not display the <title> element of the page, at least not where the user is likely to look for it.
• Opera 5 only displays the <title> element on the Window menu.
• Background images often disappear in Opera 3.62, particularly when memory is low.
• Opera 3.62 does not support enough CSS/Javascript to display layers or DHTML properly. Pages can degrade well if a little forethought goes into the design however.
• Opera 5 cannot resize frames, though Opera 3.62 can if borders are present.
• Form elements (which are borrowed from the Operating System) cannot be styled with CSS. Borders and padding applied to form fields are drawn around the grey border of the field.
• Opera 5 does not like small background images. Images which are only a few pixels wide/tall can virtually cripple Opera as it tiles them, especially on slow machines. Whilst tiling, Opera will not respond to keypresses so it may appear to have hung.
• To be continued...