Online Color image to black and white converter

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Color image to black and white converter

RGB to grayscale image conversion online:

Original image:
Converted image:

How to convert RGB to grayscale

Gray RGB color code has equal red,green and blue values:

 R = G = B

For each image pixel with red, green and blue values of (R,G,B):

R' = G' = B' = (R+G+B) / 3 = 0.333R + 0.333G + 0.333B

This formula can be changed with different weights for each R/G/B value.

R' = G' = B' = 0.2126R + 0.7152G + 0.0722B

Or

R' = G' = B'  = 0.299R + 0.587G + 0.114B

 

Example

Pixel with RGB values of (30,128,255)

The red level R=30.

The green level G=128.

The blue level B=255.

R' = G' = B' = (R+G+B) / 3 = (30+128+255) / 3 = 138

so the pixel will get RGB values of:

(138,138,138)

 




Online Image Calculators

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Image Calculators

Simple Online Image Converter is online application which converts image from one format to another (eg. jpg to png, png to jpg, jpg to pdf). This Image Converter supports converting image to the following formats: JPG, PNG, PDF, GIF, BMP

With the Simple Online Image Converter, all you have to do is upload an image and choose the new format that you’re looking for. It is easy, fast and free tool.

What is a JPEG File?

JPEG stands for “Joint Photographic Experts Group”. It’s a standard image format for containing lossy and compressed image data. Despite the huge reduction in file size JPEG images maintain reasonable image quality. This unique compression feature allows JPEG files to be used widely on the Internet, Computers, and Mobile Devices. The sharing of JPEG images is quick and efficient. Also, a large number of JPEG image files can be stored in minimum storage space. JPEG files can also contain high-quality image data with a lossless compression. In PaintShop Pro JPEG is a commonly used format for storing the edited images.

What Is a GIF File

Even if you can’t define the word “GIF,” you’ve definitely seen one before. They helped define the early internet, and they’re more popular now than ever before. But what exactly is a GIF, and how do you use them?

What is a PDF File?

Developed by Adobe, PDF is a popular document format. The full abbreviation of PDF is “Portable Document Format”. The key feature of PDF document is that it holds the contents of a document in a fixed layout. That mean the Contents of a PDF document never lose their shape and remain intact in various platforms. PDF files can contain fonts, images, text formats etc. and all in print ready format. This document format also supports password protection and encryption of content. PDF files are great for sharing, even from mobile devices. The files can be accessed from any PC or mobile device with the help of Adobe Acrobat Reader or similar software. With software like PaintShop Pro PDF files can be edited in various extent.

What is a PNG File?

PNG stands for “Portable Graphics Format”. It is the most frequently used uncompressed raster image format on the internet. This lossless data compression format was created to replace the Graphics Interchange Format (GIF). PNG file format is an open format with no copyright limitations. Like GIF images, PNG also have the ability to display transparent backgrounds. In addition to that, PNG files are capable of containing 24bit RGB color palettes and greyscale images. Basically, this image format was designed to transfer images on the internet but with PaintShop Pro, PNG files can be applied with lots of editing effects.

What is a BPM file?

BPM files are Bizagi Process Modeler document files, which you can read more about below.

The BPM file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So a BPM opener may not be able to open all kinds of BPM files. In this case, though, we only know of one specific use.

What are PNG files best used for?

PNG format is a lossless compression file format, which makes it a common choice for use on the Web. PNG is a good choice for storing line drawings, text, and iconic graphics at a small file size. JPG format is a lossy compressed file format. This makes it useful for storing photographs at a smaller size than a BMP.

What is the difference between a PNG and a JPEG?

JPEG and PNG both are a type of image format to store images. JPEG uses lossy compression algorithm and image may lost some of its data whereas PNG uses lossless compression algorithm and no image data loss is present in PNG format. PNG uses lossless compression algorithm

An Introduction to the JPG and PNG Image Formats

As we mentioned, JPG and PNG are two of the image formats most commonly used on websites. They each use different ‘codecs’ (or compression methods) to store image data. This means that PNGs are better suited for certain uses than JPGs, and vice versa.

JPG is an image format that uses lossy compression. For this reason, JPGs typically have a lower file size, and are faster to load than PNGs. If you’re uploading a lot of pictures, such as an album from an event, using JPGs means you can display more photos without running out of server room, and they will load more smoothly for your visitors.

However, the higher compression also means that every time you save a JPG, it loses some image information. If you save a JPG over and over again, this can cause it to become pixelated. For web use, however, this doesn’t always matter.

PNG, on the other hand, is a lossless compression type. This means it saves more data, and results in a higher image quality than you’ll typically see with a JPG. A PNG is also much less likely to be pixelated than a JPG.

Advantages and Disadvantages of PNG Format

Portable Network Graphics or PNG is a file format for compressing digital images developed initially as an improved and non-patented replacement for Graphics Interchange Format or GIF. However, this format has now been used as a better replacement for the JPEG standard.

The Advantages of the PNG Format

1. Lossless Compression: One primary advantage of PNG over JPEG is that it is a lossless compression. What this means is that digital images compressed under this standard retain their data, details, and quality regardless of repeated encoding and decoding.

2. Wide Color Depth: The format is suitable for different types of digital images such as photographs and graphics. It supports palette-based images with palettes of 24-bit RGB or 32-bit RGBA colors, as well as grayscale images, and full-color non-palette-based RGB/RGBA images.

3. Support for Transparency: Another key characteristic of the PNG format is that it supports compression of digital images with transparent areas. Take note that the JPEG standard renders these transparent areas as a solid white color.

4. Ideal for Editing Images: Because this format is a lossless compression, it is ideal for storing digital images for editing. Unlike the JPEG standard, the PNG format retains image quality regardless of repeated encoding and decoding.

5. Sharp Edges and Solid Colors: Note that JPEG is not ideal for digital images with large solid colors and sharp edges between objects because it produces visual artifacts. This is not the case with PNG. Thus, this format is ideal for images containing texts, line arts, and graphics.

The Disadvantages of the PNG Format

1. Bigger File Size: A key drawback of PNG is that it compresses digital images at a larger file size. On the other hand, the JPEG standard can achieve a smaller file size than a PNG for a relatively similar image quality and resolution.

2. Not Ideal for Printing: Note that this format was designed solely for distributing digital images online. Hence, another disadvantage of PNG is that it is not ideal for professional-quality print graphics because it does not support non-RGB color spaces such as CMYK.

3. Other Shortcomings: The PNG format does not support embedding EXIF meta data used by most digital cameras. In addition, unlike the GIF format, it does not natively support animation although there are unofficial extensions available.

JPG, PNG OR GIF – WHICH ONE SHOULD YOU USE AND WHEN?

When it comes to image use on your website, within your blog or in your social media posts, the JPG, PNG, and GIF file formats are the most commonly used. However, it is important to remember that each of these come with very different capabilities and are not cross-compatible. Here, we will look at the pros and cons of each, and give you our recommendation on where and when to use each one successfully.

JPG/JPEG (Joint Photographic Experts Group)

This file format is widely used by professional photographers and is ideally meant for use with photographs. It can be compressed as small as you like, however, keep in mind that some of the data in the file may be lost due to heavy compression. This file type also does not use color palettes when referencing color, rather, it uses 24-bit color definitions.

The Pros of using JPEG/JPG files


    24-bit color scheme

    Most common file format used in the photography industry

    Image file format for compression, but may compromise on image quality

    Ideal for high-quality, highly detailed photographic images

PNG (Portable Network Graphic)

The Portable Network Graphic (PNG) file format is ideal for digital art (flat images, logos, icons, etc.), and uses 24-bit color as a foundation. The ability to use a transparency channel increases the versatility of this file type.

The Pros of using PNG file types


    Ideal file type for digital art

    Incorporates a “lossless” compression for ensured file quality

    24-bit color (similar to JPEG) which supports over 16 million colors

Which is better JPEG or PNG?

In general, PNG is a higher-quality compression format. JPG images are generally of lower quality, but are faster to load. These factors affect whether you decide to use PNG or JPG, as does what the image contains and how it will be used.

What is the highest quality image format?

Are you wondering what is the highest quality image format? Do you need to save pictures to preserve their quality while printing and sharing? Believe me, if your work doesn't require knowing what separates TIF from a PSD or a PDF (like mine, I'm working as a graphic designer), there is no necessity to learn such things.

The number of available formats is just impressive. That's why I will try to provide you with the main features of the best image formats.

A raster image is also known as the one consisting of a set grid of dots. They are usually called pixels and each pixel is given a definite color. Mind that raster pictures are resolution-dependent. In other words, they are available only in one size. In case you want to transform raster images, prepare to get a blurry result. While enlarging them, the software takes into consideration surrounding pixels trying to guess what picture data is missing.

Usually, such format is used for photos, digital artwork as well as web graphics (social media content, banner ads, etc.). Photoshop is known as an image editor for creation, designing and editing raster images. You can also use it to add some shadows, effects or textures to available designs.

TIFF – Highest Quality Image Format

TIFF (Tagged Image File Format) is commonly used by shooters and designers. It is lossless (including LZW compression option). So, TIFF is called the highest quality image format for commercial purposes. It doesn't mean that this format is of higher quality than others. The main difference between TIFF and other formats is that it is more suitable for image post-production since it isn't compressed.

Moreover, TIFF makes it possible to create any desired kind of digital images. Feel free to work with it in any photo editing software to improve pictures. Be ready, TIFF images will occupy a lot of space on your device.

You should use a TIFF if:

A high-quality print graphics is necessary. TIFF, like RAW, is the best image file format. You’d better choose this format if you want to print photos in a large size.

You need to make a qualitative scan. If you use TIFF for this purpose and scan any required documents, artwork or photos, then be sure you will get the best copy of original files.

Don’t use a TIFF if:

You deal with web graphics. Of course, most web browsers support TIFF. However, its main function is printing. You’d better give preference to PNG or JPEG to showcase top-quality images online.

JPEG

JPEG (Joint Photographic Experts Group) is a widespread format for saving photos. Its extension is written as .jpg.

This best image file format features various qualities such as low, medium and high. You should select less compressed options for this format if you need a high-quality image. As a rule, photos in JPEG are shared on email, posted on the social network, published on the websites, etc.

One of its great benefits is saving a lot of space. The format doesn't take too much space on the memory cards. It means that you can store many images and do not worry about any limits. Mind that editing images in JPEG format may decrease their quality.

You should use a JPEG if:

You work with online photos and artwork. The highest quality image format lets you have impressive flexibility with raster editing as well as compression. As a result, you receive web images that can be downloaded quickly.

You are eager to print photos or artwork. Images saved in JPEG format are ideal for editing and further printing thanks to a high resolution with low compression.

There is a necessity to send a quick preview image to clients. You reduce the size of JPEG images to share them via email.

Don’t use a JPEG if:

You look for a web graphic with transparency. It is not a good idea to use JPEG as it doesn’t have a transparency channel and requires a plain color background. Give preference to GIF and PNG for this purpose.

You require a layered and a fully editable image. You will have problems with JPEG images as all changes are saved only in one layer and there is no opportunity to redo them. So, a PSD is a nice alternative in this case.