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Build Angular Image Compressor Web App in Browser Using ngx-image-compress Library in TypeScript
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Jun 9, 2025
Get the full source code of the application here: Official Website: https://freemediatools.com
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0:02
uh hello guys uh welcome to this uh live
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stream so in this live stream I will
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show you a angular module which allows
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you to compress your images right in the
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browser itself and the package name is
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ngx image compress this is actually the
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name of the package the command is very
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simple you simply execute this command
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to install this module and it's almost
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got 24,000 weekly downloads and they
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also given this example on their
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official website you can try this by
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visiting image library.app so here you
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can actually upload and compress your
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image right itself in the browser the
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image is not uploaded you simply select
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your image and then automatically the
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compression take place in the browser
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you can even upload multiple images as
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well so this package exports you can see
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we can upload multiple images and then
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it will compress
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them so various examples are there so
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now to get started I basically will
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build this example from scratch where
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you allow the user to upload their image
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and then it will also show you how much
1:12
size it has compressed the original size
1:15
of the image was 855 kilobyte and now
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the original the new size has become
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29.53 kilob so you can see significantly
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the size has been reduced from 855 kilob
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to 29 kilob so this is and then you can
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download your compressed
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image so now you can see it is 22 kilob
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so significantly the size is reduced and
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uh now to get started here this is a
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simple angular project here first of all
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you need to go to this app.component
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html file and here we will simply write
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our
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HTML and let me also delete all the
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TypeScript code here so we will start it
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from
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scratch so go to this app.component.html
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HTML and right here we will allow the
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user to simply have a input field where
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they will select a image file
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so first of all we will have a button
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here and this button will have this on
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click event handler upload file so we
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need to define this function right here
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so right here come to the TypeScript and
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just define this function upload file
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so you will have a button right here
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upload and as soon as the user clicks
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this button they will able to select a
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image file so then we will
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have so let's suppose we need to now
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write this upload file function so the
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very first thing we need to do we need
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to import this uh ngx image compress
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service which will be coming from this
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package ngx image compress so simply
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import this line at the very up top
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here and then inside this we first of
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all need to declare a series of
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variables right here in the typescript
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so just declare all these variables the
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source which is the original image that
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you will select then the compressed
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image which is the thumbnail source
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image result before crump after compress
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you need to show the size difference so
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for this we have to declare these
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variables so just declare these
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variables and after that inside we also
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need to pass this service in the
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constructor so we can pass this service
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as a
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private we can declare a service uh
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variable of this service which is ngx
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image compress service so we are simply
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passing this into the
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constructor like this so after that
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inside this upload file function right
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here we will initialize this this dot
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image compress dot upupload
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file is a function so this returns a
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promise here so right here we will pass
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the image plus the
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orientation so right here we will say
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this
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dot so here you can actually declare a
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function or which will actually show the
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size difference for this we are calling
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this function which is format bytes so
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which will actually convert the size
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into kilobytes and
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megabytes so let me just declare this
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function so this is a utility kind of a
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function where it will actually show the
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actual size difference so we are
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converting this to kilobyte megabyte all
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that stuff then it will return exactly
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how much the size difference after
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that we just need
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to call here this dot
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image
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result before
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compress and here you need to
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simply pass this image
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and then we will need to compress this
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image for compressing this image we
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simply call image compress dot it
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contains this function which is compress
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file so this function is contained
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inside this package and here you simply
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pass the image that needs to be
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compressed and then their orientation
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and then the fif width and the height so
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this actually takes four arguments first
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of all the actual image that needs to be
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compressed the second argument is the
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orientation and then we have the width
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and the height and this will actually
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compress your image and then it also
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returns a promise so we can handle this
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by calling dot then and this will have
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the compressed image and here you can
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simply display the compressed
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image so now to display these we can go
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to the HTML and right here we can
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display
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this using the image tag so we can have
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the size difference we can add two
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paragraphs here image size was and now
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image
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sizes
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so if you just select your image you
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will see original size it will tell you
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which is 800 kilobyte now we also need
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to calculate the compressed size and
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also display that as well so for
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displaying that now you can see we have
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compressed it file so this comes out to
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be the result and here we can display
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this so we can say this dot
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image result after compress so this has
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this property and we can display
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this so if you select your
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image this is the first image the
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original image
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and now if you want to
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display so we can display this
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format so you can see now the compressed
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size is it has compressed the image from
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723 kilob to 28 kilob so it's a very
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good package guys in Angular
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specifically compresses the image right
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in the browser
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itself and it doesn't need to need to
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upload your image to any kind of server
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it basically compresses all your images
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right in the browser itself it can
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handle multiple images as well so this
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is actually the package NGX image
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compress definitely install it and start
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using it
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so thank you very much for watching this
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video and also check out my website
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freemediattools.com
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uh which contains unlimited number of
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tools regarding audio video and image
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and I will be seeing you in the next
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live stream