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JPG vs JPEG: Understanding the Most Common Image File Format

Website owners face image files regularly. While you don't have to be an expert on image files to edit or upload images to websites It is recommended to become familiar with the most common formats for files such as JPEG. Or is it JPG?

In this article, I'll provide the JPG vs JPEG comparison to help you understand the differences, as well along with other tips to help you upload the best images to your site to provide the best user experience. If you're looking for an in-depth tutorial on the current .webp file format there's a guide for you 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 webmaster dealing with images, you've most likely seen that file-format JPEG in the past in your editing or uploading experiences.

But did you be aware that the word JPEG may actually refer to reference to three different things?

Well, it is and we're here in order to clarify all of them:

1. JPEG Lossy Compression

When you upload images to your site It's crucial to make sure you don't affect the speed of your site and performance by uploading large images that waste resources and take forever in loading on the frontend of your site. In fact, all website owners should optimize their images in some manner to minimize the file sizes of their images while preserving the loading times as well as the user experience.

That's why JPEG comes in handy. JPEG is a lossy compression tool used to ensure that digital pictures utilized are as compact as they are able to be and load quickly when you want to access them.

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

• The file size of image that has been compressing is permanently reduced through getting rid of unnecessary ( redundant) informationfrom the image.
• Quality of the images is a concern even though the difference is often such that the average visitors aren't able tell.
• During compression, each pixel is compared to other pixels in a range of 2:1 up towards 100:1. ( any pixels that are identical to the original pixel are then eliminated in the event that they are found to be unnecessary).
• JPEG lossy compression is generally employed to create photographsand complex still images.
• By compressing images using lossy compression, you decide how big the file is and what value trade-off ( e.g., smaller files mean lower image quality).
• If you edit and save a single image you edit and save, the less professional the image of the image will be.

If you're more experienced in editing images using lossy compression, there is an opportunity to improve the image's quality and reduce the size of the file using RAW JPEG images editing them, then saving the image only once.

convert to bmp

If you're unwilling to do JPEG lossy compression on the images of your website You can opt for a different option lossless compression.

Lossless compression saves your images in an entirely different format ( usually PNG). While the quality of the image does not suffer because there is no information is eliminated, know that when you use lossless compression, the final file resolution of the photo you choose to save will always be larger than with lossy compression. This could lead to 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 of the sub-committee who helped develop the JPEG standard as well as the other standards for still images within the larger group known as ISO.

The first JPEG standard was published at the end of 1992 and was issued by ISO ( International Organization for Standardization). ISO is responsible for drafting document with the intention to "...provide requirements, specifications, guidelines or specifications that can be utilized consistently to verify that the materials, products, processes and other services are suitable to their intended purpose."

ISO sets the standards for a variety of things including digital images as a way of providing consumers and customers with highest-quality products and solutions.

Image source: Wikimedia Commons

The International Organization is a free association of members from more than 164 countries, making it one of the biggest developers of standards.

3. JPEG as a File Format

The last way the term JPEG is employed is when you're referring to a file format name or a method for storing the digital image. This is likely the way you're most familiar with JPEG since it's one of the file format options you can choose to use when you back up an image following editing.

JPEG file format

Here are some fun facts about and the .jpeg document format.

• The most popular image file format used by digital cameras as well as other image capturing devices.
• Supports 16,777 colors. can be created using 8 bits of each RGB Color Model.
• Displays an impressive 16 million colors at once so that the combination of color and resolution nearly perfect.
• Supports a maximum of 65.535 x 65.535 pixels.
• It reduces the dimensions of an image by around 50-75% ( because of lossy compression) when it is saved

Additionally, this kind of file format is not ideal for pictures with sharp edges because the colors blend in more than in .png file, which shows individual pixels as a set of.

Now, let's figure out what JPG is.

What is JPG?

What is JPG relative to JPEG?

File extensions in Windows

Well, when it comes to .jpeg instead of .jpg in reality, there's no distinction between themexcept the amount of characters.

Crazy right? Let us explain.

The term JPG is used to refer to earlier version of Windows operating systems. Specifically, the MS DOS 8.3 and FAT-16 file systems had a limit of 3 letters when it came to names of files, whereas other operating systems that resembled UNIX such as Mac or Linux and Linux, which didn't have this limit.

Also, on Mac and Linux systems images that were saved as JPEGs utilized the extension .jpeg. But when it came to saving these same types of images in Windows The file extension had to be shortened to .jpg to make sure it didn't exceed the limit of 3 letters.

Today, Windows operating systems accept 3- and 4-letter file extensions such as .jpeg as well as .jpg. Since a large number of users have been using Windows for years, and are used to saving their images as JPGs but they've not stopped. This is why applications for photo editing like Adobe Photoshop and GIMP save all JPEG images with the .jpg extension file on both Windows and Macs to prevent confusion.

JPG vs JPEG: Similarities Between the Two

Okay, so you're aware what .jpeg and .jpg images are the same exactly. To bring that point home, and make sure you keep it in mind for the future, we're going to analyze the similarities between JPEG in addition to JPG images.

1. Both Are Raster Images (Not Vector Images)

Computer images can be produced by raster images or vector images. And since JPEGs are raster images, they are also JPGs.

Graphics called bitmaps are images. A bitmap is a grid of individual pixels that , when combined, create an image. In this way, raster image comprise a variety of tiny squares ( or pixels) of color every one of them coded in a unique shade or hue. When taken together form an image that is logical for viewing.

Image source: PrintCNX

Here's more information on raster images that will aid 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 shades and also very undefined lines and shapes.
• Because of their that they are pixel-based, they have problems with quality when blown in dimensions ( they become jagged and reveal the individual pixels).
• They are defined and displayed in a specific resolution. It is determined in terms of dots per inch ( dpi).
• The higher the dpi the better the resolution as well as the aesthetic attraction of your image.
• Common raster format formats include: TIFF, JPEG, GIF, PCX and BMP files.
• Images in the Raster format represent what is known as the Web standard, which means that they are the preferred images found on the internet.

For the record, JPEGs or JPGs are not vector images.

Image source: PrintCNX

Here's some information regarding vector images, so you're able to recognize the difference:

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• Images are created using mathematical formulas which define geometric shapes such polygons, lines, curves, circles, and rectangles.
• Perfect for straight-edged pictures like line art.
• Because there are no color variations, they work for flat, uniformly colored images.
• Use popular images such as logos, letterhead, and fonts.
• You can scale down or up without any quality degradation because they don't rely on pixels to make an image whole.

2. Both Terms Mean the Same Thing

Remember when we discussed the word JPEG and what it meant for Joint Photographic Experts Group? The answer is yes that both JPEG as well as JPG are abbreviations for the same ISO sub-committee.

3. Both Are Used for the Same Image Types

Because they're raster images rather than vectors each of the .jpeg and .jpg formats are ideal when used for digital photography. Digital photographs are characterized by a wide range of color gradations which look seamless when stored as raster JPEG/JPG files. So, your visitors will always be able to see a stunning photo if the image is saved as a .jpeg/.jpg and uploaded to your website.

Find out more about image file types and the impact they have on your website.

4. Both Lose Some Quality When Saved

Since the .jpeg against .jpg comparison is null ( because they are exactly the same thing) So it is reasonable to assume that the compression technique used on each file format -- lossy compression-- causes a loss in image quality when the size decreases.

In addition, this means that whichever extensions you employ ( either .jpeg or .jpg), your image's file size will be smaller than it was when it was first created, which will lead to faster loading speeds when uploaded to your website and viewed by site visitors.

In the end, JPEGand JPGs are the same thing . They have several primary uses for reducing the size of files for better web viewing and allow users to compress their photos after saving. Also, the files are named using a common file extension that is recognized by a large number of.

So ask yourself: JPG vs JPEG, which is better? From there, do not think too much because the answer is neither. They're the same thing and which one you pick is only a matter preference.

JPG vs JPEG 2000

If you've ever found yourself seeking information about JPEGs and JPGs, it's possible that you've seen the phrase JPEG 2000and was wondering what in the world this was. Since it's an option for most images editing applications.

JPEG 2000 was an image encryption system that was developed by the Joint Photographic Experts Group in 2000. It was created to be superior to the JPEG standard in use. In actuality, it was specifically designed to allow lossless compression for Images by using the most advanced compression techniques on a discrete wavelength transformation.

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It allowed people to boost their images and save the images as JPEGs, without degrading the quality of the image.

Here are some of the most important characteristics included in JPEG 2000:

• The latest Compression Techniques:unlike conventional JPEGs, JPEG 2000 was able to perform both lossy and lossless compression ( even on a single image file).
• Progressive Decoding:enables site visitors to see the quality of an image while the whole process is downloading as background. As more data is downloaded, it improves the quality of the picture for the viewer.
• Higher Compression Ratios:when it is lossy compression, JPEG 2000 could compress an image as much as 20-200 percentages greater than JPEG and maintain the same image quality compared to JPEG. JPEG image that's the same size.

Additionally, JPEG 2000:

• Helps preserve transparency in images.
• Can provide bi-level, grayscale or palette-color image information.
• The metadata includes unlimited quantities of private or special-purpose information in metadata.
• Can handle larger image sizes ( greater than 64K x 64K pixels), with no tilting.
• Ultra-low latency, which is especially helpful to stream live TV.
• Scalability in both resolution and quality.

JPEG 2000 Limitations

Although JPEG 2000 contains a number of outstanding features and appears to be the next-best code standard for digital images However, there are reasons it's not yet widely used by most people:

• No general browser support ( only supports Safari).
• It is not compatible not compatible with JPEG ( must encode using a new standard) and supports the original JPEG).
• Coding JPEG 2000 files can be processing intensive for CPUs, which can be a strain on servers and cause slowdowns.
• A lot of cameras and websites aren't yet ready to adopt the format since it's not widely accepted.

Due to its limitations you'll find it difficult to find this JPEG 2000 file format as an option while saving your digital photos. It's true that it's better than JPEG, until it is accepted by everyone it's likely to run into a host of compatibility issues making your job more challenging as a webmaster more than it is.

Convert Image Files to JPG: Common Methods

There are numerous ways in which you could save your pictures as .jpg as well as .jpeg files. Let's explore the most common.

1. Windows Paint

If you are running Windows You can effortlessly save any image to .jpeg or .jpg with the help of Windows Paint. Upload your image into Windows Paint, go to File>> Save As Save As choose the image destination, enter the name of the photo, and then select JPEG (*.jpg, *.jpeg, *.jpe, *.jfif)from the drop-down option.

Windows Paint

Then , click Save.

2. Affinity Designer

Affinity Designer is much like other image editing software such as Adobe Photoshop. To save your image as a JPG using a software like this, begin by opening Affinity Designer and uploading your image. Make any edits you want and then click the Fileto Export.... Select an icon for JPEG, click the JPEG icon, choose one of the options (high, medium or low), then click Export. ( best, high medium or low) and select to export.

Affinity Designer

When you click Save As then, when you do, the When you do, the Save As dialog will pop up so you can select a destination, name your image, and again ensure that you save the image as a JPG.

"Save as" in Affinity Designer

Click Save.

3. Online Converter Tool

If you're interested in converting images to JPG There are a number of free online jpg converter tools to assist. For example, FileZigZag is a free online converter for files that is easy to use. Just drag and drop your image file or upload it, choose the file type for the image to be converted Enter an email address and click Convert.

Convert png into jpeg FileZigZag

Naturally, you'd not want to share your email in exchange the conversion of your photo into a JPG. That's why we've rounded up another set of premium and free options for you to check out:

• XnConvert : perfect for advanced image editors that need lots of image file formats, the capability to convert bulk, as well as use Windows, Mac, or Linux.
• Zamzar :a free online tool for those with large image files ( up to 50MB) and who need the option to have the final product emailed to them or not.
• The adapter : a simple image convertor that supports batch images. It can convert them instantly and works on both macOS and Windows.

Of obviously, these are some of the options available to you if need to convert your images to JPG.JPG is not the same as JPEG: What's the difference? What's the deal with JPEG 2000? Find the answer (and more) with our extensive guide! CLICK TO TWEET

Summary

JPG Vs JPEG are the most popular extension of files and compression methods for people who want to store or save images in digital format. This is especially important for website owners that want to show visually appealing images and maintain an exceptional user experience.

We're happy to inform you that it doesn't what you choose to use .jpeg, .jpg or .webp type of files, you're sure to receive the same result: beautiful images that load lightning fast for website users.

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