Credits and licences
Last updated 2026-10-10
Our own code
The tools and page layouts are written for this site. The pages make no requests to other servers.
The print letters children trace (the single-stroke “ball-and-stick” school print on every worksheet) are drawn by our own code, and the PDF writer is our own as well.
Our dotted fonts
The downloadable fonts TracingPDF Dots and TracingPDF Dots Lined (on the dot dot font page) are made by us from the same letter shapes and are released under the SIL Open Font License 1.1 (copyright SKYSEED TECH LLC): you may use them at home, at school and in printed or sold worksheets, and share the files; the font files may not be sold on their own. Licence text: /fonts/LICENSE-TracingPDF-Dots.txt.
Third-party material
| Name | Used for | Licence |
|---|---|---|
| Playwrite US Trad (TypeTogether, The Playwrite Project Authors) | Joined cursive letters on the cursive tracing sheets. We use a subset converted to TrueType (letters, digits, punctuation) and read the letter outlines from it; files and licence at /fonts/playwrite-us-trad/ | SIL Open Font License 1.1 |
| harfbuzzjs 0.4.12 (HarfBuzz text shaping for the web) | Joins cursive letters into words in the browser (loaded only on the cursive page); files and licence at /vendor/harfbuzzjs/ | MIT |
| Dolch sight word lists (Edward W. Dolch) | The 220 service words (pre-primer to third grade) and 95 nouns on the sight word pages | Public domain word lists |