JavaScript vs. PDF-LIB vs. Scala vs. ZenScript Comparison Chart

Create and modify PDF documents in any JavaScript environment. Create PDF documents from scratch, or modify existing PDF documents. Draw text, images, and vector graphics. Embed your own fonts. Even embed and draw pages from other PDFs. Written in TypeScript and compiled to pure JavaScript with no native dependencies. Works in any JavaScript runtime, including browsers, Node, Deno, and even React Native. Add, insert, and remove pages. Split a single PDF into separate ones. Or merge multiple PDFs into a single document. Create new forms or fill and read existing fields. Checkboxes, buttons, radio groups, dropdowns, option lists, and text fields are all supported. If you aren't using a package manager, UMD modules are available on the unpkg and jsDelivr CDNs. Note that only some PDF readers can view attachments. This includes Adobe Reader, Foxit Reader, and Firefox. If you are using the CDN scripts in production, you should include a specific version number in the URL.

ZenScript originated from MineTweaker where a simple programming language is needed to allow users without programming knowledge to be able to execute simple commands by following the tutorials for it. Originally MineTweaker had a simple one-line-at-a-time parsed scripting system, but it quickly became clear that it wasn't flexible enough, so a simple parsed language was created. This parsed language worked quite well but was very inefficient as each value was wrapped into its own object. ZenScript allows mixed typed and typeless behavior. You don't need to define types anywhere, the compile will infer them where possible and exhibit typeless behavior when the type is effectively unknown. In nearly all the cases, the type is perfectly known and execution runs at native Java speed. Since there are types, they can be documented and enforced.