## Tools - imagick - ghostscript - https://github.com/armaab/pdfmark ## Image to pdf ```bash convert *.jpg output.pdf ``` ## Merge ```bash gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=output.pdf input1.pdf input2.pdf input3.pdf ``` ## 上索引 ```bash gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=indexed.pdf -dPDFSETTINGS=/prepress pdfmark.txt input.pdf ``` `pdfmark.txt` ``` [/Page 1 /Title <FEFF6A19984C0031>/OUT pdfmark [/Page 2 /Title <FEFF6A19984C0032>/OUT pdfmark [/Page 4 /Title <FEFF6A19984C0033>/OUT pdfmark ``` (要先把 UTF-8 的文字用 UTF-16BE encode) 或是可以直接用 [pdfmark](https://github.com/armaab/pdfmark) ## 改標題 ``` gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=output.pdf input.pdf -c "[ /Title <FEFF65874EF66A19984C> /DOCINFO pdfmark" ``` ## Reference - https://www.lexjansen.com/phuse/2018/ad/AD07_ppt.pdf - https://stackoverflow.com/questions/9188189/wrong-encode-when-update-pdf-meta-data-using-ghostscript-and-pdfmark - https://askubuntu.com/questions/1327809/how-to-specify-the-title-of-the-pdf-file-gs-produces