These bookmarklets contain a selection of high quality monolingual and bilingual online dictionaries (latter mostly together with English, German, Russian, Danish) and some corpora.
By clicking the bookmarklets from your bookmarks toolbar, a dictionary menu will appear on your browser screen. Any word you enter in this menu (or any word you have selected from a web site before) can be looked up in one or more online dictionaries which are listed below the input field. You can also look up a specific word on a web site by selecting it with the cursor and then running the bookmarklet bookmarklet afterwards by clicking on it.
It's easiest to understand the concept of these bookmarklets by simply clicking this demo:
To use the bookmarklets, you'll have to drag one of the following buttons into your bookmarks toolbar. A right-click → "save as bookmark" would also make it. Important is that it will be saved as a bookmark.
Yiddish dictionaries. See the special article on the bookmarklet for Yiddish dictionaries, keyboard input and transliteration.
1. Virtual Keyboard
Attaches a virtual keyboard to every input box (text, password and textarea) of the current web page. The bookmarklet can be customized, see the author's web site.
2. Google Transliteration
Google Transliteration offers an option for converting Latin characters to the characters used in language of your choice (e.g. Russian). This lets you type words in your language phonetically in English script and then have them appear in the language script. Use Google Transliteration bookmarklets for typing other scripts on any web site.
3. Bing Universal Text Input
Bing delivers a similar solution with its Universal Text Input tool (see "install Bookmarklet").
Whois-record (site owner) lookup of the actual web site with networktools.nl.
2. Internet Archive
Archive lookup of the actual web site with archive.org.
Following two bookmarklets show a cached version of the actual web site. Useful for temporary offline sites.
The service Coral is specialised on this function:
Copyscape provides a free plagiarism checker for finding copies of a web pages online.
ImgOps The Image operations meta-tool also has a bookmarklet.
6. Print and PDF
PrintFriendly's bookmarklet cleans and formats web pages for printing and creates PDFs. You can try its funtionality by clicking on the PRINT/PDF button in the right upper corner here on this web page.