SeaMonkey/Add-ons FAQ

How can I install an add-on for what AMO shows "Not available for SeaMonkey 2.35"

If you know that the add-on is compatible with your SeaMonkey version (for example from mozilla.addons.user-experience and does not need to be converted, you need to proceed:

• Rightclick greyed-out download button → Download on HDD
• Open downloaded webpage_screenshot_in_firefox-0.98.75-sm+tb+fx.xpi with an unzipper what allows ot edit the contents of the zipped file, for example 7-zip

 » List of contained files will appear

• Double click install.rdf

 » Will be opened in a plain text editor like EditPad

• Search install.rdf for string "seamonkey"

 » below heading (comment) you will find some information like "<em:id>", "<em:minVersion>", "<em:maxVersion>"

• Modify SeaMonkey Version number in "<em:maxVersion>2.33.*</em:maxVersion>" to that what you need, here for example

"<em:maxVersion>2.39.*</em:maxVersion>"

• Close plain text editor and save install.rdf
• Confirm 7-zip message "install.rdf has been modified - save?" and save install.rdf
• Close 7-zip
• rename webpage_screenshot_in_firefox-0.98.75-sm+tb+fx.xpi to webpage_screenshot_in_firefox-0.98.75-sm2.39+tb+fx.xpi so that name remembers you to your modification
• SeaMonkey-menu 'Tools → Add-ons Manager → Extensions → Install Add-on from file ... → install webpage_screenshot_in_firefox-0.98.75-sm2.39+tb+fx.xpi'
• Restart SeaMonkey if necessary