Licence & Open Source
Direct answer: KBExact is built on open-source libraries, named here with their licences — the one page on this site where engine and library names belong. The exact-size engine itself is original code written for this site; the libraries below do the parsing, rendering and archiving underneath it.
| Library | Used for | Licence |
|---|---|---|
| pdf-lib | Reading, rebuilding and writing PDF files (Path A re-encode, rasterised rebuild assembly, floor growth) | MIT |
| pdfjs-dist (PDF.js, Mozilla) | Extracting embedded image information and rendering pages for the rasterise fallback | Apache-2.0 |
| fflate | Creating the ZIP download for batch image results | MIT |
| UPNG.js | PNG palette quantisation and lossless PNG encoding | MIT |
| heic2any | Decoding HEIC/HEIF photos (loaded only when a HEIC file is actually dropped) | MIT |
| Astro | Static site generation | MIT |
Full licence texts ship with each library in the site's code bundle and in the libraries' own repositories. No library on this list phones home: all of them run locally in your browser, and the exact-size engine that orchestrates them makes no network requests of its own.
Site content
The text of this site © 2026 Abdul Hannan (AH Digital Studio), Pakistan. Portal specifications quoted here are facts taken from official notifications, cited with their sources; the facts belong to everyone, the wording here is ours.