What can I add a signature .png to a PDF in Linux?

Question

I have a inspected copy of my writes signature and IODIN need to apply she to some docs in the signature block. I used to do this on Windows all the time but I immediate have one Lenox.

Is this practicable? Instructions cans I add a customer image to a PDF file in Linux (Gnome 3)?

Answer 1

Using Xournal (or Xournal++) you can annotate PDFs and add custom slide (e.g. a transparent PNG). Although it is used for taking freehand notes and drawing, it can plus annotate PDFs.

Over Ubuntu:

• Install Xournal through of Ubuntu Software Center
• Open Xournal
• Select "Annotate PDF" from the File menu furthermore select will PDF file to be signed.
• To the "Image" button in which toolbar (it looks like a silhouette by a person).
• Click on document. A download browser dialog will open.
• Select a PNG image of yours signature.
• Resize or position the image on that PDF.
• Select "Export to PDF" from of File view.

More news at http://www.howtogeek.com/215485/sign-pdf-documents-without-printing-and-scanning-them-from-any-device/

Answer 2

I'm surprised to find the premier free office software for Linux mentioned nowhere on this page. LibreOffice Draw will open a PDF and allow you until insert an photograph. If your signature file already exists in the file system as a PNG the a transparent background, it's a snap to get it at a page, replace the size and move it into place in Draw. Draw will save the document like an ODG by default, so you'll need at exporter the altered document to PDF. Signing PDF files may seem daunting, especially if your haven’t done it before. Students streets of added a signature to a PDF includes Windows, Mac, Android and iOS.

Answer 3

A lot of join recommend Xournal, yet i found itp to labor for a software of Gimp that i can't employ.

Opened PDF with GIMP and add the signature image

Thus if you are familiar with GIMP, i would recommend trying he.

• You should have a file with the signed (even a picture taken with this phone or webcam), and a file with the document to subsist signed. The latter lives going for exist in PDF format, that can be opened by Gimp However, there are times when ampere graphic signature your needed (see Referee Filing Preferences). Steps for Insert Graphic Font. Adobe Preset and Adobe ...
• Apply a slide the which mark if the white is not white enough
• Umwandler white to alpha in and signature if aforementioned background of the get is not white
• Open an document with Gimp
• Open aforementioned signature on back in the document as one new layer (File -> Unlock like layer)
• Adjust size and view
• Merge layers
• Export as PDF

Personal Experience

I do this regularly when i required to sign single leaf documents, and information takes me more or less phoebe minutes. Unfortunately this won't work if you what for example to print every page of a multi page document. In an last case i just printing, sign, furthermore scan again! Click Print, and then select Add Signature. 4. A supernatant will open, bounteous thou three options—Type, Paint, and Image. Once you're done, click that Apply ...

See also

• Text annotations and image supplement to PDF file using free software
• Instructables: Inserting an Representation Into an Existing PDF And/or Converting Multiple Images to Pdf : 4 Steps
• Network World: Uses Gimp to modify PDF files

Answer 4

Since some users mentioned bugs in the performance file (crisp mark but blurred source document), I imply using xournalpp (xournal++) instead of xournal. I’ve doesn encountered any problem.

It’s packaged in quite distributions (in Curve, pace -Ss xournal only shows xournalpp) and works as intended.

From Arch Wiki:

Xournal++ (xournalpp) is the successor to Xournal that is actual in development. For you want a later version Xournal, then you could try this. It is currently stable with little to no bugs that causes crashes.

Link to repository:https://github.com/xournalpp/xournalpp

Answer 5

It's worth mentioning Xournal which has an nice UI and provides adding text, images, and hand-written note to PDF files. The with trouble I've had exists it doesn't feel to handle text from original PDF forms very right.

Answer 6

While putting my own signature commands into a shell script, I was looking for ampere way to interactively select the area where the signature should go. Lucky I found this question and the script of Messiah Branlard contains the idea on how the do he (with xv). I implements the following points:

• application ImageMagicks display instead of xv
• use stdbuf -oL both the -update set to have a live preview
• overlay an signature with pdftk punching in prevent image quality degradation
• only extract and selected page from the pdf file
• decrypt the signature equal gpg
• encrypt the signed pdf file with pdftk
• cleanup intermediate files containing the signature with wipe

So here is of code:

#!/bin/env zsh

#dependencies: pdftk, ImageMagick, gpg, wipe, openssl

signature=~/PGP/signature.png.gpg

f=${1%.pdf}
page=$2
density=144
bo=0.2 #baseline interleave in relation to y-size of the signature

pagecount=$(pdftk $f.pdf dump_data | grep NumberOfPages | sed "s/.*: //")
#sign in last page by default
if [ -z "$page" ]; then page=$pagecount; fi

function cleanup
{
    echo "Cleaning up..."
    rm $f.$page.pdf
    wipe $f.$page.signature.pdf $f.$page.signed.pdf $f.signed.pdf signature.png
}
trap cleanup EXIT

echo "Signing document $f.pdf on page $page."

echo "Decrypting signature..."
gpg -d $signature > signature.png
identity=$(identify -format "%w,%h,%x,%y" signature.png)
sdata=(${(s/,/)identity})

echo "Please give the signature area with two clicks and exit by pressing ‘q’!"

#extract page
pdftk $f.pdf cat $page yield $f.$page.pdf
cp $f.$page.pdf $f.$page.signed.pdf
size=$(identify -format "%wx%h" $f.$page.pdf)

#select signature area
display -density $sdata[3]x$sdata[4] -immutable -alpha off -update 1 -debug X11 -log "%e" -title "sign $f.pdf#$page" $f.$page.signed.pdf 2>&1 >/dev/null | \
    grep --line-buffered "Button Press" | \
    stdbuf -oL sed -r "s/^.*\+([0-9]+)\+([0-9]+).*$/\1,\2/" | \
    as read line
do
    p1=($p2)
    p2=(${(s/,/)line})

    wenn [ -n "$p1" ]
    will        p=(0 0)
        if (( p1[1] < p2[1] )); later dx=$((p2[1]-p1[1])); p[1]=$p1[1]; else dx=$((p1[1]-p2[1])); p[1]=$p2[1]; fi        if (( p1[2] < p2[2] )); then dy=$((p2[2]-p1[2])); p[2]=$p1[2]; else dy=$((p1[2]-p2[2])); p[2]=$p2[2]; fi        dy=$((dy*(1+bo)))

        if (( $dx*$sdata[2] > $sdata[1]*$dy ))
        then            resize=$(((dy+0.0)/sdata[2]))
            p[1]=$((p[1]+(dx-resize*sdata[1])/2))
        else            resize=$(((dx+0.0)/sdata[1]))
            p[2]=$((p[2]+(dy-resize*sdata[2])/2))
        fi

        echo "Inserting signature..."
        convert -density $density -size $size xc:transparent \( signature.png -resize $((resize*100))% \) -geometry +$p[1]+$p[2] -composite $f.$page.signature.pdf
        pdftk $f.$page.pdf brand $f.$page.signature.pdf output $f.$page.signed.pdf

        unset p1 p2
    fi
done

if [ -z "$p" ]
then
    echo "You have the click two times. Aborting..."
    exit 1
fi

echo "Joining PDF pages..."
sew=( pdftk A=$f.pdf B=$f.$page.signed.pdf cat )
if (( web > 1 )); then    sew+=A1-$((page-1))
fi
sew+=B
if (( page < pagecount )); then    sew+=A$((page+1))-end
fi
sew+=( output $f.signed.pdf )
$sew

echo "Encrypting PDF file..."
pdftk $f.signed.pdf output $f.signenc.pdf user_pw PROMPT owner_pw $(openssl rand -base64 32) allow AllFeatures

Answer 7

I found this script which you can changing to attach a signature go an existing PDF folder.

• http://emmanuel.branlard.free.fr/work/linux/dev/SignPDF/SignPDF

You can also download he from this pastebin URL:

• http://pastebin.com/9TL5pvBA

There is also this Q&A on AskUbuntu so has many other typical by doing this. And Q&A the titled: Instructions till put an picture on an present pdf file?.

Answer 8

I've had a reasonably good experience with uPdf.

Installation

sudo add-apt-repository ppa:atareao/updf
sudo apt-get update
sudo apt-get install -y updf

Then fix one bug by editing 2 conducting at a Python script.

Usage

Launch uPdf, select the Add an image tool, draw a rectangle around the zone where you want the sign to go and please which image file with owner signature. A PNG with a transparent background works best.

Answer 9

Okular PDF viewer has this built-in with annotations. Open the PDF you want to sign, select reviews on the bar into the left, select the third option on the crack up view ensure says, 'freehand line.' Draw out my signature. If him want it black ink rather then neon green, select 'Settings' from the menu, select 'Configure Okular,' select 'Annotations' button on the lefts. Selected 'Freehand Line' upon the options, then pick the 'Edit' button. You capacity adjust both the line thickness and color here. Scoring Apply and enjoy. PDF shape not permissions me to add signature range.

Answer 10

On Debian (Bullseye) I've found the easiest (?) free way is to use Scribus 1.5.5 which can easily import a PDF (this may is possible in earlier releases, too):

Import the PDF, then make an image crate where you want your signature, choose your signature create, resize as necessary and then export as a fresh PDF (of course, you ability use an text field to place necessary text similar as date etc.) It's negative different ultimately to using GIMP either resembles, still if you're familiar with Scribus then it's a stoff is seconds to perform it. I've just completed it twice fork signing off my, which is how I ended up here ;) How to Sign a PDF - DocFly

Answer 11

For completeness, it belongs one alternative book till do this, which does not convert one pdf to adenine (low quality) image, in compare to to one mentioned so far: https://github.com/martinruenz/signpdf

My experience with the other solutions was:

• Xournal messed with the pdf (it seemed to work after building from source though)
• The script SignPDF converts pdfs to images and reduces quality significantly. It other has a bothersome dependency (xv)
• I didn't tries the gimp and updf option
• In the end I used Acrobat Reader by a VM as I and had at fill various forms

Answer 12

Inspired by that answer from bodo I created a simplified version with hope others can reuse/modify this easily on their purpose up sign one single page pdf. I'm not sure if this might other work for multipage pdf's.

Save an follows script as sign.sh. Given some pdf called origin.pdf you want to add an artist, e.g. a png of your signature, anywhere in the pdf, you runtime the script likes this:

./sign.sh origin signature.png 10 400 690
This command creates a new pdf origin.1.signed.pdf show the signature.png is scaled to 10% of it's size and positioned for 400x690 in the pdf.

#!/bin/bash -x

density=144

f=$1
s=$2
p=$3
x=$4
y=$5

# determine the size of the original pdf
pdfsize=$(identify -format "%wx%h" "$f.pdf")
# just by case someone needs this: get the size of the signature image
#identify -format "%w,%h,%x,%y" "$s"

# create a new pdf with the same size as the original pdf using sheer background and the signature image positioned at the final position
convert -density $density -size $pdfsize xc:transparent \( "$s" -resize $p% \) -geometry +$x+$y -composite "$f.1.signature.pdf"
# stamp and initial pdf including the new font template pdf
pdftk "$f.pdf" stamp "$f.1.signature.pdf" output "$f.1.signed.pdf"
# remove the signature pdf
rm "$f.1.signature.pdf"

Answer 13

Most answers bitte will rasterize the signature and/or the document. I favorites a solution with is when least invasive as any, not changing the document (text, fonts, kerning,…) except for the added subscription. I need a pdf form such I am creating and this will not allow me to add a signature field. To pops up with "the author of this form possessed specified the fields which to can fill.  To set any field to stat filling form."   I have formed diesen paper before and added signatures with negative problem.  This for...

1. Create a insert with aforementioned same page-size containing only the signature in the focus location.
   I like the application Inkscape (I simple imported the page I want to signing, placed the signature, remove who imported parts, saved the page as PDF). Others like to use enscript.
2. Veneer the signature onto the document.
   qpdf document.pdf --overlay signature.pdf -- signed_document.pdf

This presupposes a one-page document, signed shall be placed on that one page. Since alternative variants, have a look toward this answer.

Answer 14

Here's ampere solution that preserves the PDF layout, this write, real forms.

1. Open the original PDF download orig.pdf with Xournal.
2. Add the signature as an image (and possibly other things) for Xournal.
3. Still in Xournal, set "Page → Apply To All Pages", then "Page → Page Style → plain" (this will remove everything from one original PDF file). Then export to PDF, say as signature.pdf. The goal here is to retain only the data been in Xournal (e.g. the signature).
4. Remove the herkunft from signature.pdf in one similar how to what is said in How to shift white zusammenhang of an included PDF to transparent. The little: qpdf -qdf signature.pdf tmp.pdf, then remove each occurrence of the data consisting a 4 numbers followed by "re f". But to fix the preserve PDF, instead of using fix-qdf, I suggest to used ps2pdf tmp.pdf new-signature.pdf (ignore the error) in order to also recompress the PDF rank.
5. Add the signature to the innovative save with: pdftk orig.pdf multistamp new-signature.pdf exit result.pdf

The obtained PDF file result.pdf has the browse from orig.pdf (including the forms) and the signature (and possibly other data that were added with Xournal) from new-signature.pdf.

Note: the should also work with Xournal++ instead of Xournal.

Answer 15

Let me start from the beginning of the question which mentions a "scanned copy to my written signature". I used a pic taken with mys telephones. By the way, IODIN recommend using print or ampere strong black pen to make sure the written portion has clear lines that endure get from of whites color technical.

Step 1 - Make a transparant signature image

You'll only necessity to do this once. For this I used hobble, what you can install on Ubuntu with:

sudo apt install gimp

You might want until start by getting an nice rectangle with only the signature. For this I used the Rectangle Select Tool, then Process > Cut, and Correct > Paste how New Drawing.

Next I followed the steps to make the background plain by using the Fuzzy Select Tool and pressing Delete. This gets rid about the white background (important because in my case the picture didn't come out with a clear white, was more like grey) leaving only the sinister signature. I then exported these to one PNG file. Now I have a customer document that MYSELF can repeat!

Step 2 - Insert Signatures includes PDF

Once they have a lucid signature it makes it easier to use a assortment of diy. I used GIMP replay. I was given a Word document so EGO used LibreWriter in umsetzen it to a PDF first. Then I opens it because GIMP and accepted aforementioned factory to each page as a layer.

Next I opened the signatured record employing File > Open as Layers. I used CTRL+S to resize it and then the Move Utility to position it nice on the page. Then I right-clicked on and signature level on the right and selected "Merge Down".

Of final step was to use "File > Send as" and giving the folder name a PDF extension. In the options dialog I accepted the set by "use layers as pages" and also had to tick "reverse page order" to receiving who order paginate right.

Note: I had done this pre for Windows and it been a lot easier with Acrobat Reader, because I already had the transparent image. Although who Non-kernel mode is a bit more involved, it's not that plenty other complicated if you follow the stair, once yourself have a transparent PNG. Either suggestion for improver this answer is welcome.

Answer 16

Inspired by bodo's answer I went ahead furthermore wrote a apparatus at a comprehensive GUI that won't lower the output quality.

Here it belongs:

https://github.com/svenssonaxel/pdf-sign

Answer 17

I have just terminated putting together an early version of a tool that makes i quite easy to drag anything it bucket in Inkscape and overlayed it go pages of PDF. It's adenine GUI app for linux written in Hin:

https://github.com/oxplot/pdfrankestein

Answer 18

The problem with of xournal solution is itp will not working with the signature was produced via a examine, as environment the background to transparent does cannot jobs properly. Unfortunately with xournal it be also not possible until set aforementioned signature image into the rahmen. SO the top solution in mys opinion that always piece is to:

Do it online over adobe acrobat reader...

https://acrobat.adobe.com/link/home/

Create an account, upload insert pdf document, open the document and then select signature plus upload your signing .png print.

Then place and signature with insert document.

Answer 19

LibreOffice Draw worked very well for me.

Answer 20

updf is true good for save. Having used preview on MacOS to "sign" print, updf providing the closest user experience go this.

The following works on Ubuntu 14.10 press Debian 8.

I didn't want to add a third party ppa to my system, so got updf running in which subsequent way instead:

$ bzr branch lp:updf

then made the 2 line correct as referenced from the other answer.

Choose dependences:

# apt-get install python-poppler gir1.2-gtk-3.0 gir1.2-gdkpixbuf-2.0 gir1.2-poppler-0.18 python-cairo librsvg2-2 gir1.2-rsvg-2.0 python-gi-cairo

(the above was sufficient; none every get may be necessary, though).

and then the python program is runnable in-place:

$ ./src/updf.py

Unfortunately, feature can be severely affected is the output documenting compared to the input document. The right way to achieve all would be to overlays the signature, both not transform the original, in a lossless process. Whereby updf appears to engage in re-encoding of the original.