The front of the word green, the root blue, the ending red
Dikduk mode is a Rebbi’s board drawing on every word: the prefix in green (ו, ה, ב, ל, מ, ש…), the shoresh in blue, the ending in red (נו, ך, ים, ות…). Hover any piece and it says what it does — “and”, “to”, “our”, “plural”. A child sees that ובערב is one root and two small pieces, and stops fearing long words.
No root, no colour
The prefix and ending are only marked once the root is known — without that anchor the ב of בית and the ב of בראשית are the same letter in the same place, and a child would be taught that a house is “in-yis”.
One ending, not two
אלקינו is “our”, not “my” plus “our”. The reader takes at most one ending, the longest that fits, and says so in the bubble.
The same word, the same colours, everywhere
Chumash, Tehillim, Siddur, Tanya, Rambam, the halacha seforim — and inside the interlinear too, where a phrase glossed as one unit is still coloured word by word.
With or without Shoresh
Turn Shoresh off and Dikduk still marks the front and the back; turn it on and the root is drawn heavy in the middle. The two switches are one question asked twice: what is this word made of?
Who it's for — For the child who reads but does not yet see the parts of a word, and for the classroom where dikduk is taught from the text rather than from a chart. Premium and up on the seforim; free inside My Siddur, where tefilah is given away.
One toggle on the reader's toolbar, and it follows you from the Siddur to the Kitzur.