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Build Angular PDF-LIB Project to Export Multiple Images to PDF Document in Browser Using TypeScript
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Jun 7, 2025
Get the full source code of the application here: https://codingshiksha.com/angular/build-angular-pdf-lib-project-to-export-multiple-images-to-pdf-document-in-browser-using-typescript/ Official Website: https://freemediatools.com
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0:03
uh hello guys welcome to this uh live
0:05
stream so in this tutorial I will show
0:07
you uh a angular application which will
0:11
actually convert multiple images into
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PDF so it's a web application and for
0:16
this we are using another library PDF
0:19
processing library which is PDF lib
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which is an open-source library for
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processing PDF files you can edit PDF
0:27
files directly in the browser so this is
0:30
actually example app here you have this
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HTML form where you can select multiple
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files let me select these files here so
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you will see you have selected two
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images and we have this button export to
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PDF if you click this button you will
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see your images will be get exported it
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will have the full size it will take the
0:51
full size of the page this is the first
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page this is the second page so in this
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easy way you can select as many images
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as you want and then instantly it will
1:00
convert all your images into a PDF
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file so if you select seven images
1:06
you'll see it will create seven pages in
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the PDF file and each page will take the
1:11
entire image so we are using this
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package here if you go to npmjs.com just
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search for this package PDF
1:20
lip and it's a library where you can
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actually create and modify PDF documents
1:26
right in the browser itself so the
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command is simple you simply install
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this by executing this command and I
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have given all the source code in the
1:35
description of this video so now to get
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started I will delete everything and
1:40
start from scratch
1:45
so the first thing you need to do you
1:48
need to go to the app do component.ts
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file and right here you need to import
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this
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package so using the import statement so
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you will simply say
2:00
import PDF
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document RGB and it will be coming from
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this library PDF lip after that you will
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declare two
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variables for storing the images image
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previews string array and initial value
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will be empty array and secondly image
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files and then you need to go to
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app.component html file this is your
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template file so here you will actually
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show a form to the user where they will
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select the
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images so right here we'll be having
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this input type
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file we are binding this onchange event
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handler on file change so this function
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will execute as soon as the user changes
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the images they select images this
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function will execute and we are binding
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multiple to allow multiple file upload
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and only accepting images so now we need
3:04
to define this function all on file
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change in the TypeScript code so right
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here we go to this file and define this
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function which is on
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file change and it will be having this
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event and then we will have a simple div
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tag where we can actually show the
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images which have been selected so we'll
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be having this div tag ng for directive
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let image of image previews and we are
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binding this class image preview and
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just showing these images using the
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image tag so right in the CSS we
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basically added these CSS styles so just
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add these CSS styles so we are targeting
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the all the images that are selected
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giving it a margin a max width of 100%
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height of auto and a border of 1 pixel
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solid gray color so just add these CSS
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styles after that
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uh we will have a simple button as soon
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as you click this button your PDF file
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will be created and downloaded so we
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binded this function export to PDF as
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soon as you click this button so now we
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just need to define this function as
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well which is export to
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PDF so this function will be async we
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will simply say export
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to
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PDF
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so firstly we will write this on file
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change function so this will execute as
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soon as you
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select the files or the images so first
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of all we'll make use set image previews
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to empty array and also this dot image
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files to also empty
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array then we will read all the images
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which are selected you will get this by
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event.target files and this is a very
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standard way by which you can read all
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the files which are
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selected by using the file reader API
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this is available in every browser so
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again we are using this in the if
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condition we are checking if the files
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are selected then we are running a for
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loop for each file we are pushing it in
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this array image files after that we are
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reading it using file reader API
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creating an object of and then it
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contain this onload function so when
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your images are loaded then we are
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pushing it inside this array image
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previews whatever is the target result
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which comes when you call this function
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read as data URL which is reading the
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base 64 code of the file so after you
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read all these images and store it
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inside the variable now we write this
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function which is export to PDF so here
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you first of all create a new PDF
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document by using this PDF document dot
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create function this will create a new
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PDF file and after that you need to loop
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through all the images that it's present
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inside this variable which is this dot
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image
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files so first of all we calculate the
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bytes here calculating the bytes we
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convert this into array
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buffer then we declared these two
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variables image variable and the
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dimensions of each image so we need to
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make sure that each image takes the
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entire page width and
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height
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and here we simply detect that if the
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image is PNG or JPG so here we simply
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have a if condition for this so here we
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are saying that if the image is PNG then
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we are using this function which is
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embed PNG so you can see it has a series
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of
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functions so one such function is embed
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PNG so here
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you embed this PNG image or else if the
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image is JPG in that case we simply use
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this function which is embed JPG and
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here you pass your image bytes so after
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embedding this image now we just need to
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calculate the dimensions so you just
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need to make sure that each image takes
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the entire space in the page so for this
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we call this function which is image
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dotscale and here you pass one as an
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argument and lastly you need to add this
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image to the PDF document for adding
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this image we call this function which
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is add
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page which is available so here you pass
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the dimensions the width and the
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height and then we simply draw this
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image so we also need to draw this so we
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have this function here of draw image so
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here you pass this image and then the
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argument here you need to specify the x
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coordinate and the ycoordinate so I will
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say 0 0 and in order to make sure that
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it takes the entire space so we need to
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calculate the width so dimensions width
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and height is dimensions
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height so this will make sure that each
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image will cover the entire page and
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after embedding it we just need to save
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this PDF file so for saving it we have a
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function here which is PDF
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doc.save so this will save the PDF file
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and then we can simply download this so
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this is a very simple technique by which
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we convert this into a blob and then
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download this as an attachment so right
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here I pasted this code here so if we
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constructed this blob here passing this
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PDF file and then we call this function
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URL.reate object URL passing this blob
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and then using this anchor tag we can
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simply download this image as an
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attachment in the browser
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so that's all that we need to do and if
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you refresh your browser and uh select a
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bunch of
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images and then click this button and
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you will see a PDF file will be
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constructed and
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uh all the source code is given in the
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description of this
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video so you can select as many images
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as you want and then instantly it will
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create the PDF file and it will contain
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all the images that you selected so it's
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a very useful app and it is using this
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open-source library PDF
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lip so also check out my website free
9:53
mediatools.com uh which contains
9:56
unlimited number of tools regarding
9:57
audio video and image and I will be
10:01
seeing you in the next one
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