Add Watermark to Existing PDF using PHP - CodexWorld
GitHub - scouting-nl/fpdi: FPDI is a collection of PHP classes facilitating developers to read pages from existing PDF documents and use them as templates in TCPDF.
GitHub - madnh/FPDI-Protection: Composer version of Setasign FPDI-Protection
Installation
PHP】TCPDF + FPDIでPDFを出力してみた話 #PHP - Qiita
COMMENT GENERER UN FICHIER PDF AVEC UN MOT DE PASSE EN PHP ? | by Yves Martial Boah | Medium
FPDI/composer.json at master · Setasign/FPDI · GitHub
Writing to an existing PDF with FPDI - DEV Community