[Feature request] Add watermark

[holazt]

As a blogger, basically I use screenshots, but some people like to steal pictures. So I hope the watermark function can be on flameshot plan. Although primitive watermark is easy to implement, I wanted to make it customizable, not just text, even my own logo or any other images, and can resize and reshape these watermarks.

Off-topic, flameshot's arrows, draw lines, draw rectangles/ellipses, blur, etc., must be drawn once, and if you do not do well, you can not make any adjustments on the original basis.

[javierin]

I would also vote for this one. Very nice to be able to configure a watermark (either text, transparent png) to be put on top of the captured screenshot

[technodrome]

+1. This would be very useful indeed.

[fmiqbal]

Maybe mine a bit different, but it still has watermark concept, but what I need is timestamp, like Android timestamp watermark

[veracioux]

@fmiqbal I think adding a specialized timestamp feature would be bloat. If you are on linux, perhaps you could make a script to generate an image with a timestamp, save it to a file, then make flameshot use it as a watermark.
Not sure if this strategy will be available on Windows, due to some technical considerations.

Or, if we implement a plugin API, someone can create a plugin that will do this.

All of this applies only after we implement the watermark feature of course.

[borgmanJeremy]

@fmiqbal A simple script like this should get you started:

#!/usr/bin/env bash
timestamp=$(date +%T)

flameshot gui --raw | convert - -background transparent -fill grey -font Calibri -size 140x80 -pointsize 24 -gravity southeast -annotate +0+0 $timestamp output.png

[mmahmoudian]

@fmiqbal If you are on linux and have ImageMagic installed you can do the following for an already saved file:

montage -geometry +0+0 -background white -label "$(stat inputfile.png --printf=%y)" inputfile.png outputfile.png

basically it gets the file (inputfile.png) modification time (%y) and add it to the bottom of your picture with a white background and writes it into the outputfile.png.

if applied on this image you will get:

If you want it to be a real watermark you can use this:

#!/usr/bin/env bash

# a script based on https://amytabb.com/til/photography/2021/01/23/image-magick-watermark/

INPUT_FILE="aa.png"
OUTPUT_FILE="aa2.png"
WM_FONT="NewCenturySchlbk-Italic"
WM_FONT_SIZE="50"


# get the modification time
INPUT_FILE_MODIFICATION_TIME=$(stat "${INPUT_FILE}" --printf=%y)

# create the watermark

convert -size 320x100 xc:transparent \
        -font "${WM_FONT}" \
        -pointsize ${WM_FONT_SIZE} \
        -fill black        -annotate +24+64 "${INPUT_FILE_MODIFICATION_TIME}" \
        -fill white        -annotate +26+66 "${INPUT_FILE_MODIFICATION_TIME}" \
        -fill transparent  -annotate +25+65 "${INPUT_FILE_MODIFICATION_TIME}" \
        "/tmp/wm_front.png"

convert -size 320x100 xc:black \
        -font "${WM_FONT}" \
        -pointsize ${WM_FONT_SIZE} \
        -fill white   -annotate +24+64 "${INPUT_FILE_MODIFICATION_TIME}" \
        -fill white   -annotate +26+66 "${INPUT_FILE_MODIFICATION_TIME}" \
        -fill black   -annotate +25+65 "${INPUT_FILE_MODIFICATION_TIME}" \
        "/tmp/wm_mask.jpg"

composite -compose CopyOpacity "/tmp/wm_mask.jpg" "/tmp/wm_front.png" "/tmp/wm_final.png"


composite  "/tmp/wm_final.png" "${INPUT_FILE}" -gravity southeast -geometry +10+10  "${OUTPUT_FILE}"

if applied on this image you will get:

[fmiqbal]

@fmiqbal A simple script like this should get you started:

#!/usr/bin/env bash
timestamp=$(date +%T)

flameshot gui --raw | convert - -background transparent -fill grey -font Calibri -size 140x80 -pointsize 24 -gravity southeast -annotate +0+0 $timestamp output.png

Love this, results is good, I'll grab some file watcher to automate the process

my command goes like
convert 2021-10-29_20-41.jpg -background white -fill grey -size 140x80 -pointsize 18 -gravity southeast -annotate +0+0 "$(date +%Y-%m-%d\ %H:%M)" output2.png

nice on black, good enough on white

Thanks, much appreciated