Can I decode an xpi file using any software for Windows?

Question

The containing .xpi file I have on my pc only displays what appears to be gibberish, like the following below.

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EÙtò¼5d¨Šîx›b5I‡„ŽœpGñ³FBÜ ç±w×ÅjR„dÊøº®Þg¾'Ÿæj(·I®XœPyb-\\tè•9³} 𼿿à8HS:sö}êfÆD¤'ã-ÀÃ=mcÀx†Î0 ‡'ŠÀ@ÄÄ$ÈVã ‚2Bé=ü,èsfrbg+œaù9dT˜¸Â€àü3;48N ¢¯¨ÿrÛ£pã-\\^øœ3ßF4¡:#88;ðÿYð #³$¨ƒ»Ê (T'ßÁÃÃE‰üŸÝˆ´±BÚ¸9‰»Ø:ÿCØ~Œ¿âá&ÿ'ño()ï€Î'õzSñšçolåÑzÉH}r×f÷×=Y>™!ˆš¢Uò%öeŸ' Jù+à¦^Å W+$òØ6Ø¥å®{CTJJ.ê– ‹µM1(aùUxœ§gh.P)²t+—3½ù"š enä ¥ÝíVIÔ¾ U],í^':ù5spîéjµx±]øƒ‚õÔJ½É'7<«µf”†¼[à5U¶eR+ž2Ô€¹)†›K)É‚e‰Øhã³Û™Çð÷Cȯ9iزŸÐâÑÝØ•¦~É”qì÷Ñ4Á7qå“9yQ‡ più[ª•ê›M" °Äo4!ã¡M®Lú9t?ÂÜÖ®pLWèëb1vDIÓ™¼é ":öäËUxÈwPAM èeRí¹KSlì‹3 «¬ßrÛÌzURôP1ü–(ãªlmÂÔ«SFä勤Í÷†¯ÑîM‰}ÉÌš“ZzO€tƒ‰û5{â¶AnN¶(›ï»€sRhR1£äq´õ†öT‡†Rw›XMæ ®X2£ªf¹ÞO%2;dcþ„«i¥‹» 3aÄýò^©|-ž—iÇ»vG—ÓèDý·–Äô9 ·™µnt¶y;²`ôv߆Lx²¥ñ

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With that being said, it's an old Mozilla file from an old install which has since been removed and while I'd like to just delete it, I'd also like to try to decipher what it means first.

Any ideas or suggestions?

Answer 1

An XPI file is just a ZIP file with a different extension.

Simply rename the file and unzip, or use 7-zip to unzip the content (you won't have to rename the file using 7-zip).

The XPI is used to pack extensions for Firefox/Thunderbird and indicates that the content is signed. The content will vary depending on what type the extension is, but it will contain a manifest.json file. Any programming language will be in JavaScript which may reside in root and/or in various folders.