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JPG vs JPEG: Understanding the Most Common Image File Format

Webmasters encounter images frequently. While you don't have to be an expert on image files to edit and upload images to websites You should be familiar with the most common formats for files such as JPEG. Or is it JPG?

In this article, I'll provide a JPG vs JPEG comparison so that you can understand the differences, as along with other tips to aid you in uploading the highest quality images possible to your website for the ultimate user experience. If you're in search of an in-depth tutorial on the modern .webp file format we've got it covered too.

Ready? Let's get started!

Table of Contents

1. What is JPEG?
2. What is JPG?
3. JPG vs JPEG: Similarities Between the Two
4. JPG vs JPEG 2000
5. Convert Image Files to JPG: Common Methods

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As a site owner working with images, you have likely encountered that file-format JPEG sometime in your uploading and editing adventures.

Did you be aware that the word JPEG may actually refer to term used to refer for three different things?

Well, it is and we're here to provide all of them:

1. JPEG Lossy Compression

When you upload images to your site It's essential to take care not to adversely affect the speed and performance by uploading large images that use up resources and take forever for them to download on the frontend of your website. In fact, all website owners should optimize their photos in a way that reduces the file sizes of their images while preserving speed of loading and user experience.

That's the point where JPEG can come in handy. JPEG is a lossy compression process used to make sure that the digital images being used are as small as possible and load quickly whenever someone wishes to look at them.

Here are some things to think about when it comes to lossy compression:

• The file size of the image compressing is permanently reduced through eliminating unnecessary ( redundant) informationfrom the image.
• Image quality does suffer even though the difference is often minimal that a typical site visitors aren't able tell.
• During the compression process each pixel of the compressed image is compared to its neighbors in a ratio of 2:1 up all the way to 100 times one ( any pixels that have the same characteristics as the original pixel are then eliminated in the event that they are found to be unneeded).
• JPEG lossy compression is usually employed to create photographsand complicated still images.
• Once you have compressed an image with lossy compression, you decide the size of the image and the value trade-off ( e.g., smaller files = poor image quality).
• If you edit and save one image and save, the less professional the image of the image will be.

If you're more experienced in editing images using lossy compression, there's an opportunity to save images' quality while reducing its file size by working with RAW JPEG images, making edits, and saving the image only once.

convert to bmp

If you're not keen to apply JPEG lossy compression of the images on your site There's another option: lossless compression.

Lossless compression allows your images to be saved in a differently format ( usually PNG). Although image quality will never be compromised since no information can be removed, you should know that even with lossless compression, the final file size of your image will be bigger than the one created by lossy compression. This may result in more time to load your pages.

2. Joint Photographic Experts Group (JPEG)

JPEG is the abbreviation for Joint Photographic Experts Group, which is the name given to the sub-committee that helped create the JPEG standard in addition to the other standards for still image coding in the larger ISO group. ISO.

The first JPEG standard was established as of the year 1992. ISO ( International Organization for Standardization). ISO can be credited with creating guidelines with the intention to "...provide requirements either specifications, guidelines, or specifications that can be utilized consistently to verify that materials, products processes and services are suitable for their purpose."

ISO defines the standards for a variety of things, including digital images, in order to provide consumers and users with highest-quality products and solutions.

Image source: Wikimedia Commons

This is an international non-profit group of members from 164 countries, making it the largest creator of standards.

3. JPEG as a File Format

Another way in which JPEG is employed is when using a reference to a format name or a way to save the digital image. This is probably the way you're used to seeing JPEG because this is one of the file format options available when you store an image that you've altered.

JPEG file format

Here are some interesting facts about JPEG file format .jpeg Format:

• The most popular image file formats used in digital cameras and other devices for image capture.
• Colors are supported by 16,777,216. They are created by using eight bits of each color in the RGB color model.
• Can display up to 16 million hues at once, making the combination of color and nearly perfect.
• Supports a maximum of 65,535 x 65,535 pixels.
• This reduces the dimension of an image by around 50-75% ( because of lossy compression) when saved

Furthermore, this file format is not ideal for images with sharp edges due to the colors blend together better than if it was saved as a .png image, which would display the individual pixels in a mixture.

Now, let's figure out what JPG is.

What is JPG?

What exactly is JPG relative to JPEG?

File extensions in Windows

Well, when it comes to .jpeg instead of .jpg, the truth is there's nothing different between themexcept the number of characters.

Crazy right? Let us explain.

The term JPG exists because the earlier version of Windows operating systems. Specifically, the MS-DOS 8.3 as well as FAT-16 systems had a limit of 3 letters for names for files, in contrast to UNIX-like operating systems like Mac or Linux and Linux, which didn't have the same limit.

Thus, on Mac or Linux systems Images saved as JPEGs were saved with the extension .jpeg. However, when saving those same types of images in Windows and Windows Media Player, the extension had had to be changed to .jpg to ensure that it doesn't exceed the limit of 3 letters.

Today, Windows operating systems accept 3or 4 letter file extensions, such as .jpeg or .jpg. However, as a large portion of users are using Windows for quite a while, and are used to saving their images as JPGs however, they've continued to do so. This is why photo editing software such as Adobe Photoshop and GIMP save all JPEG images with the .jpg extension file for all platforms, including Windows as well as Macs to avoid confusion.

JPG vs JPEG: Similarities Between the Two

Okay, so you're aware you know that .jpeg and .jpg files are the same similar thing. But to help drive this message home and help you keep it in mind for the future, let's analyze the similarities between JPEG images and JPG images.

1. Both Are Raster Images (Not Vector Images)

Computer-generated images can be constructed in raster or vector formats. As JPEGs are vector images, the same applies to JPGs.

Raster graphics are bitmaps of images. A bitmap is a pattern of tiny pixels that when put together make up an image. In this way, raster image comprise of miniature squares ( or pixels) of color that are each encoded in a particular hue or shade . These when combined create an image that makes sense to study.

Image source: PrintCNX

Here's more information on raster images that will assist you in understanding:

• Useful for non-lined images such as photographs or scans of artwork or detailed graphics.
• They're characterized by subtle hue and shade gradations and very undefined lines and forms.
• Because of their pixels-based nature, they experience quality issues when blown up in size ( they become jagged and expose the individual pixels).
• They are defined and displayed at one specific resolution. This resolution is defined as dots per inch ( dpi).
• The greater the dpi, higher resolution and greater aesthetic effect of the photo.
• Common raster formats for raster files include: TIFF, JPEG, GIF, PCX and BMP files.
• Images in the Raster format are an essential part of the Web standard, and they will be used in all images you can find on the internet.

Remember, JPEGs, JPGs, and JPEGs are not vector images.

Image source: PrintCNX

Here's some information about vector images to ensure you're able to recognize the difference:

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• Images are created using mathematical formulas which define geometric shapes such lines, polygons as well as circles, curves and rectangles.
• Perfect for straight-edged photos like line art.
• Because there are no color variations, they are ideal for flat and uniformly colored images.
• Include popular images like logos, letterheads and fonts.
• You can scale down or up without losing quality since they don't rely on pixels to create the entire.

2. Both Terms Mean the Same Thing

Have you ever thought about the word JPEG and what it meant at the Joint Photographic Experts Group? It's true that Both JPEG along with JPG are abbreviations that refer to the same ISO sub-committee.

3. Both Are Used for the Same Image Types

Because they are raster images as opposed to vectors, the .jpeg and .jpg format files are most suitable to be employed for digital photography. Digital photographs contain extensive color gradations which appear seamless when they are saved as JPEG/raster images. Your site's visitors will always be able to see a stunning image when it's saved to a .jpeg/.jpg or uploaded on your site.

Find out more about image file types and how they impact your site.

4. Both Lose Some Quality When Saved

Since the .jpeg comparison is null, and the.jpeg .jpg comparison is null ( because they are the same exact thing) This is natural that the compression method used on both formats -lossy compression results in a reduction in image quality as the size decreases.

This also means that no matter what extension you choose to use ( either .jpeg or .jpg), your image's file size will be smaller than it was originally and result in quicker loading times when it is uploaded to your site and users visit your site.

In the end, JPEGand JPGs are both the same thing, and have several primary uses in order to reduce the file size of images to make them easier to view on the internet and give people an easy way to compress their pictures after saving. Then, name the image using a popular file extension that is recognised by a lot of.

If you ask yourself this question: JPG vs JPEG, which is better? From there, you shouldn't worry too much as there is no difference. They are the same and no matter which one you select, it is just a matter your preference.

JPG vs JPEG 2000

If you've found yourself looking for information concerning JPEGs and other JPGs, it's possible that you've encountered the term JPEG 2000and thought about what in the world it meant. Since it's an option available in the majority of photo editing programs.

JPEG 2000 was an image encoder system developed by the Joint Photographic Experts Group in 2000. It was designed to be superior to the JPEG standard currently in use. In reality, it was made to implement lossless compression on Images using advanced compression techniques, based on a distinct wavelength transformation.

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It offered people a way to enhance their photos and save them in JPEGs, without degrading the quality of the image.

Here are a few of the main features of JPEG 2000:

• Advance Compression Techniques:unlike typical JPEGs, JPEG 2000 could offer lossy and unlossless compression ( even on a single image file).
• Progressive Decodingenables site visitors to see low-quality versions of an image even though the entire image is still being downloaded behind the scenes. As more data is downloaded, you can see the image's quality increase for the viewer.
• Higher Compression Ratioswhen it is lossy compression, JPEG 2000 will compress an image from 20-200 percent over JPEG and maintain the same image quality you compare it to JPEG. JPEG image with the same dimensions.

Furthermore, JPEG 2000:

• Allows for preservation of transparency in images.
• Can describe bi-level, grayscale as well as full-color images.
• This includes unlimited amounts of personal or specific-purpose information in metadata.
• Larger image sizes can be handled ( greater than 64K pixels) and without tilting.
• Ultra-low latency, which can be particularly beneficial for live TV content.
• Scalability both in resolution and quality.

JPEG 2000 Limitations

Though JPEG 2000 includes a lot of outstanding features and appears to be the next best quality digital image coder however, there are some reasons it's not yet one of the file formats that is popular with many people:

• There is no Universal browser compatibility ( only supports Safari).
• Not compatible with JPEG ( must encode a new standard and support the original JPEG).
• The process of encoding JPEG 2000 files can be CPU intensive, which can affect servers and slow things down.
• Some cameras and sites aren't ready to accept the format due to it not being universally accepted.

Due to its limitations, you'll have a hard time finding that JPEG 2000 file format as an option while saving your digital images. It's true that it's better than JPEG, until it is universally accepted it's likely to run through a lot of compatibility problems, making your work harder as a website owner that it really needs to be.

Convert Image Files to JPG: Common Methods

There are a variety of options to archive your online photos as .jpg and .jpeg files. Let's take a look at the most common.

1. Windows Paint

If you're running Windows it is possible to save any image in .jpeg or .jpg with the help of Windows Paint. Simply upload your image in Windows Paint, go to the File menu, select>> Save As Save as Choose the file destination, name your image, then select JPEG (*.jpg, *.jpeg, *.jpe, *.jfif)from the drop-down list.

Windows Paint

Then click "Save.

2. Affinity Designer

Affinity Designer is similar to other image editing software such like Adobe Photoshop. If you want to save an image as a JPG using a program such as Affinity Designer, first start by opening the program and then uploading your image. Make any adjustments you'd like and then click "File> Export.... Select that JPEG icon, select your preferred quality ( best, high medium, low or best), and click Export.

Affinity Designer

If you do it, the File Save As dialog will open so you can select a file destination, then name your image, and confirm that you save the image as a JPG.

"Save as" in Affinity Designer

Click Save.

3. Online Converter Tool

If you want to convert images to JPG There are numerous free online tools that can assist. For instance, FileZigZag is a free online file converter that's simple to use. Simply drag and drop an image file to upload it select the type of file to convert the image entering an email address, and click "Convert".

Convert png into jpeg FileZigZag

Of courseyou'll not want to give your email in exchange the conversion of your photo into a JPG. That's why we've collected several other premium and free options for you to check out:

• XnConvert : perfect for advanced editors who require lots of image files formats, with the capability to bulk convert, and work with Windows, Mac, or Linux.
• Zamzar :a free online tool for people who have large image files ( up to 50MB) who want the option of having the final image emailed or not.
• Adapter : a simple image converter that can handle batch images. It also converts them quickly and is compatible with both macOS as well as Windows.

Of course, these are just one of the choices you can select if want to convert images JPG.JPG vs JPEG What is the difference? What is JPEG 2000? Find out (and more) in our detailed guide! CLICK TO TWEET

Summary

JPG as opposed to JPEG are among the most used types of file extensions and compression methods for people looking to store an image in digital form. This is especially true for webmasters who want to showcase visually appealing images and ensure a great user experience.

For your convenience, it doesn't whatever you'd prefer .jpeg, .jpg or .webp file types, you're going to experience the same effect: beautiful images that load extremely fast for site visitors.

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