This category lists non-commercial online dictionaries and glossaries of Japanese with English interfaces, compare Japanese interfaces under the World: Japanese: 各種資料 [various data]: 辞書・事典 [dictionaries and encyclopedias] category below.
Many free dictionaries of Japanese are based upon Jim Breen’s voluntary EDICT (Japanese-English Dictionary) Project
. Besides the freely-available EDICT Japanese dictionary file, which was compiled through the Internet and currently includes 110,000 entries, there are related files, such as KANJIDIC and KANJD212 with kanji characters, and JMdict (Japanese-Multilingual Dictionary) with French and German entries, collectively containing over 550,000 entries.
While any graphical browser can show Japanese characters on Websites using GIF (Graphics Interchange Format) or PNG (Portable Network Graphics) bitmap images, some sites require support for double-byte fonts, either JIS (Japanese Industrial Standard), SJIS (Windows), EUC (Extended Unix Code), or UTF-8 (Unicode). For details, see Computers: Software: Globalization: Language Specific: CJKV: Japanese