ADD: pdf-diff

README.md

@@ -21,11 +21,11 @@ If you want to contribute through a pull request, make sure to add new entries t
 
 # Summary
 
-To date, **533** apps/tools covered, divided in **41** categories.
+To date, **534** apps/tools covered, divided in **41** categories.
 
 # Index
 
-[Backup](#backup) (8) | [Calculators](#calc) (4) | [Chat and instant messaging](#chat) (8) | [Conversion](#conversion) (6) | [Data management](#data-management) (24) | [Data transfer](#transfer) (25) | [Directory changers](#cd) (8) | [Disk usage analyzers](#disk-analyzer) (8) | [Editors](#editors) (17) | [Email](#email) (8) | [File and file system handling](#file-handling) (32) | [File manager](#file-manager) (9) | [File renamers](#file-renamer) (6) | [File systems](#file-system) (3) | [Font management](#font) (2) | [Funny tools](#funny) (13) | [Games](#games) (25) | [Git and accessories](#git) (15) | [Graphics](#graphics) (12) | [Multimedia](#multimedia) (2) | [Networking](#networking) (12) | [Note taking](#note-taking) (11) | [Office tools](#office) (16) | [Organizers and calendars](#organizers) (12) | [Password managers](#password-manager) (9) | [Productivity](#productivity) (17) | [Programming](#programming) (12) | [Security and encryption](#security) (7) | [Shells](#shells) (4) | [Sound and music](#music) (20) | [System monitoring](#monitor) (23) | [System tools](#system) (18) | [Terminals](#terminal) (8) | [Text processing](#text-processing) (26) | [Text search](#text-search) (9) | [Todo managers](#todo-manager) (12) | [Utilities](#utility) (30) | [Versioning](#versioning) (5) | [Viewers](#viewers) (25) | [Web browser](#browser) (10) | [Web development](#webdev) (12)
+[Backup](#backup) (8) | [Calculators](#calc) (4) | [Chat and instant messaging](#chat) (8) | [Conversion](#conversion) (6) | [Data management](#data-management) (24) | [Data transfer](#transfer) (25) | [Directory changers](#cd) (8) | [Disk usage analyzers](#disk-analyzer) (8) | [Editors](#editors) (17) | [Email](#email) (8) | [File and file system handling](#file-handling) (32) | [File manager](#file-manager) (9) | [File renamers](#file-renamer) (6) | [File systems](#file-system) (3) | [Font management](#font) (2) | [Funny tools](#funny) (13) | [Games](#games) (25) | [Git and accessories](#git) (15) | [Graphics](#graphics) (12) | [Multimedia](#multimedia) (2) | [Networking](#networking) (12) | [Note taking](#note-taking) (11) | [Office tools](#office) (16) | [Organizers and calendars](#organizers) (12) | [Password managers](#password-manager) (9) | [Productivity](#productivity) (17) | [Programming](#programming) (12) | [Security and encryption](#security) (7) | [Shells](#shells) (4) | [Sound and music](#music) (20) | [System monitoring](#monitor) (23) | [System tools](#system) (18) | [Terminals](#terminal) (8) | [Text processing](#text-processing) (27) | [Text search](#text-search) (9) | [Todo managers](#todo-manager) (12) | [Utilities](#utility) (30) | [Versioning](#versioning) (5) | [Viewers](#viewers) (25) | [Web browser](#browser) (10) | [Web development](#webdev) (12)
 
 Some links to [related resources](#resources).
 
@@ -551,6 +551,7 @@ Some links to [related resources](#resources).
 * [huniq](https://github.com/koraa/huniq) - Command line utility to remove duplicates from the given input. Note that huniq does not sort the input, it just removes duplicates.
 * [lolcat](https://github.com/busyloop/lolcat) - Ruby Gem to colorize the output of the cat command.
 * [luneta](https://github.com/fbeline/luneta) - Interactive filter that can be easily composed within any script.
+* [pdf-diff](https://github.com/serhack/pdf-diff) - A tool for visualizing differences between two pdf files. Mainly dedicated to editors that usually spends a lot of hours on several pdf.
 * [percol](https://github.com/mooz/percol) - A Python script that "1) receives input lines from `stdin` or a file, 2) lists the input lines and waits for input that filter/select the line(s), 3) outputs the selected line(s) to `stdout`"; can be used to add interactivity to many regular shell commands.
 * [pick](https://github.com/calleerlandsson/pick) - Utility that allows users to choose one option from a set of choices using an interface with fuzzy search functionality.  
 * [sd](https://github.com/chmln/sd) - s[earch] & d[isplace] - An intuitive find & replace CLI; a possible replacement for sed.

data/apps.csv

@@ -532,3 +532,4 @@ games,othello-cli,https://github.com/LelsersLasers/othello-cli,"othello-cli is a
 productivity,paycon,https://github.com/arcorion/paycon,Converts pay amounts between different time units.
 transfer,Jitter,https://github.com/sharpcdf/jitter,"A repository-oriented binary manager for Linux, Jitter searches through online repository (currently only on GitHub) for releases with .tar.gz, .tgz, .zip or .AppImage assets."
 transfer,Transgression TUI,https://github.com/PanAeon/transg-tui,A remote TUI client for the Transmission bittorrent program.
+text-processing,pdf-diff,https://github.com/serhack/pdf-diff,A tool for visualizing differences between two pdf files. Mainly dedicated to editors that usually spends a lot of hours on several pdf.