# PDF Replace

About replacing text and links on PDF files.

## PDF - Print all links

See [pdf_replace/print_links.py](pdf_replace/print_links.py)

## PDF - Print text from all pages

See [pdf_replace/print_text.py](pdf_replace/print_text.py)

## PDF - Replace text or links

Source: https://gist.github.com/Nezteb/e761bb85ced6ce965e37d54ceb04635d

1) Uncompress the PDF file

```shell
nix-shell -p qpdf
qpdf --qdf --object-streams=disable input.pdf uncompressed.pdf
```

or

```shell
nix-shell -p pdftk
pdftk input.pdf output uncompressed.pdf uncompress
```

2) Edit the PDF as "plain text" file

Works:

- With `LC_ALL=C sed`
  - `LC_ALL=C sed -e 's|some text||g' uncompressed.pdf > uncompressed-output.pdf`

Does **not** work:

- With `nano` by pressing `ALT` + `r` (search and replace). The resulting PDF is distorted - some text is missing or misaligned.

Untested:

- With a text editor using "search and replace". Warning, on large files this might be laggy.

3) Compress the PDF

```shell
qpdf uncompressed-output.pdf output.pdf
```

or

```shell
pdftk uncompressed-output.pdf output output.pdf compress
```