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There is likely no optimal keyword density (search engine algorithms have evolved beyond keyword density metrics as a significant ranking factor). It can be useful, however, to note which keywords appear most often on your page and if they reflect the intended topic of your page. More importantly, the keywords on your page should appear within natural sounding and grammatically correct copy.
-> dan - 15
-> korupsi - 10
-> dalam - 10
-> hukum - 10
-> intelektual - 10

Your page have common keywords from meta tags.
-> korupsi
-> hukum
-> politik
-> menulis
-> buruh
-> pekerja
-> sosial
-> negara
-> samarinda

Your pages having these H1 headigs.
-> Herdiansyah Hamzah

Your pages having these H2 headigs.
-> Jubah Hukum Otoritarianisme Dalam Rancangan KUHP
-> Rancangan KUHP Dan Arogansi Intelektual
-> Alif Dan Sidang Offline Pertamanya
-> Download Gratis Buku ‘Politik Tanpa Korupsi’
-> Intelektual Publik
-> Primary Sidebar
-> Secondary Sidebar
-> Footer

Your site doesn't have favicon.

Your site loading time is around 3.6805670261383 seconds and the average loading speed of any website which is 5 seconds required.

Congratulations! Your website does not include flash objects (an outdated technology that was sometimes used to deliver rich multimedia content). Flash content does not work well on mobile devices, and is difficult for crawlers to interpret.

Congratulations! Your webpage does not use frames.