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JPG to Grayscale Converter

World's Simplest JPG Tool

This is a simple browser-based JPEG picture-to-grayscale converter. As soon as you paste your JPEG file in the input area, the program will create a grayscale version of this JPEG in the output area. You can use one of the known methods for conversion, or create a custom grayscale method yourself. Additionally, you can set a custom number of gray shades (from 1 to 256) to use in the output palette. Created by mad scientists from team Browserling.

JPG to Grayscale Converter

World's Simplest JPG Tool

This is a simple browser-based JPEG picture-to-grayscale converter. As soon as you paste your JPEG file in the input area, the program will create a grayscale version of this JPEG in the output area. You can use one of the known methods for conversion, or create a custom grayscale method yourself. Additionally, you can set a custom number of gray shades (from 1 to 256) to use in the output palette. Created by mad scientists from team Browserling.

Tool Options

JPEG Grayscale Method

Take 0.21Red + 0.72Green + 0.07Blue. (Also known as ITU-R BT-709 method.)
Take 0.30Red + 0.59Green + 0.11Blue. (Also known as ITU-R BT-601 method.)
Take 1/3 of each color component. (1/3Red + 1/3Green + 1/3Blue.)

Custom Grayscale Method

Apply custom weights to red, green and blue. {formula}
Red color channel intensity.
Green color channel intensity.
Blue color channel intensity.

Color Reduction

Reduce the number of gray colors in the output JPG.
Use this number of colors in the output JPG. Minimum: 1 Maximum: 256

What Is a JPG to Grayscale Converter?

This tool converts JPG photos to a grayscale version by removing all color information from the photo. There are many different ways to convert color components to grayscale and this tool supports the three most popular methods: "BT-709 (HDTV)", "BT-601 (PAL/NTSC)", and "Average Red, Green, Blue". The BT-709 grayscale method is the most common method for converting colors to grayscale. It's used in high-definition TVs and other modern digital video standards. The BT-601 grayscale method is similar to the BT-709 method, but it uses slightly different weights for red, green, and blue color channels. It's used in regular broadcast television in most countries around the world. The average component grayscale method is the simplest way to convert colors to grayscale. It simply computes the average value of the three color components (red, green, and blue) and uses this value as the grayscale value. For a more advanced JPG to grayscale conversion, you can enable the custom grayscale checkbox option and create your own conversion method by specifying coefficients for the red, green, and blue channels. In addition to these options, there is an additional option to limit the number of colors in the output JPG. This parameter allows you to create a grayscale JPG with a specific number of gray shades (for example, 30, 15, 5, or even just 2). Jpgabulous!

What Is a JPG to Grayscale Converter?

This tool converts JPG photos to a grayscale version by removing all color information from the photo. There are many different ways to convert color components to grayscale and this tool supports the three most popular methods: "BT-709 (HDTV)", "BT-601 (PAL/NTSC)", and "Average Red, Green, Blue". The BT-709 grayscale method is the most common method for converting colors to grayscale. It's used in high-definition TVs and other modern digital video standards. The BT-601 grayscale method is similar to the BT-709 method, but it uses slightly different weights for red, green, and blue color channels. It's used in regular broadcast television in most countries around the world. The average component grayscale method is the simplest way to convert colors to grayscale. It simply computes the average value of the three color components (red, green, and blue) and uses this value as the grayscale value. For a more advanced JPG to grayscale conversion, you can enable the custom grayscale checkbox option and create your own conversion method by specifying coefficients for the red, green, and blue channels. In addition to these options, there is an additional option to limit the number of colors in the output JPG. This parameter allows you to create a grayscale JPG with a specific number of gray shades (for example, 30, 15, 5, or even just 2). Jpgabulous!


JPG to Grayscale Converter Examples

Click to try!
click me

JPG to Grayscale via the BT-709 Method

This example converts a JPEG photo of hills to grayscale colors, using the same grayscale algorithm that's employed in HDTV broadcasts. The ITU-R BT-709 formula gives significant priority to the green channel over other channels as the eye is most sensitive to the green color. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Take 0.21Red + 0.72Green + 0.07Blue. (Also known as ITU-R BT-709 method.)
Apply custom weights to red, green and blue. {formula}
Reduce the number of gray colors in the output JPG.
click me

Grayscale JPEG That Uses Custom Weights

This example removes all colors from a JPG picture of snowy mountains by applying custom weights to red, green, and blue (RGB) color channels during the conversion process. It extracts RGB colors in equal parts by assigning a coefficient of 1 to each component. The formula takes the form: 1×Red + 1×Green + 1×Blue after which the value is truncated to the maximum value of 255. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Apply custom weights to red, green and blue. {formula}
Red color channel intensity.
Green color channel intensity.
Blue color channel intensity.
Reduce the number of gray colors in the output JPG.
click me

Strawberries in Limited Grayscale

In this example, we transform a full-color image of ripe strawberries arranged in a circular pattern on a plate into grayscale tones. The reduction is achieved by using the BT-601 color transformation standard. Furthermore, we have activated the option to limit the grayscale color palette of the JPG. We have set the color count to 10, which means that the resulting JPG only has ten distinguishable gray colors. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Take 0.30Red + 0.59Green + 0.11Blue. (Also known as ITU-R BT-601 method.)
Apply custom weights to red, green and blue. {formula}
Reduce the number of gray colors in the output JPG.
Use this number of colors in the output JPG. Minimum: 1 Maximum: 256
click me

Cityscape in Minimalist Monochrome

This example converts a JPG photo into grayscale tones using an exceptionally small number of colors. It redraws an entire city built on a hillside, utilizing only four shades of gray. Despite this severely restricted palette, the program still successfully captures all the details of the city streets and houses. It's an effective demonstration of how a limited color palette can still capture spatial depth and texture. (Source: Pexels.)

Required options
These options will be used automatically if you select this example.
Take 1/3 of each color component. (1/3Red + 1/3Green + 1/3Blue.)
Apply custom weights to red, green and blue. {formula}
Reduce the number of gray colors in the output JPG.
Use this number of colors in the output JPG. Minimum: 1 Maximum: 256
click me

Use Only the Red Channel

This example enables a custom conversion method and sets the red color intensity to one while disregarding the green and blue colors by setting their intensities to zero. Consequently, only the red color component influences the pixel color in the output JPEG. As you can see, the resulting JPEG has a full light intensity in the red section, which can be seen as bright white pixels, while the green and blue portions have no intensity and have black pixels. This conversion method illustrates how digital images are composed of color channels and how manipulating these channels can dramatically alter the appearance of the image.

Required options
These options will be used automatically if you select this example.
Apply custom weights to red, green and blue. {formula}
Red color channel intensity.
Green color channel intensity.
Blue color channel intensity.
Reduce the number of gray colors in the output JPG.

All JPG Tools

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Quickly blur an area of a JPEG photo.
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Quickly generate random JPEG images with random pixels.
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Quickly create a JPG/JPEG with any color shade.
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Quickly extract a list of hex codes from any JPG image.
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Quickly convert emojis and Unicode art to JPG pictures.
Quickly generate a JPG picture from any text.
Quickly crop a region of a JPEG picture.
Quickly flip a JPEG photo vertically.
Quickly flip a JPEG photo horizontally.
Quickly create multiple copies a JPEG picture.
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Quickly convert a JPEG image to a Data URL.
Quickly convert a Data URL to a JPEG graphics file.
Quickly turn a JPEG picture grayscale.
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Quickly black out a region in a JPG photo.
Quickly lighten an area of a JPEG photo (increase brightness).
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Quickly increase the dimensions of a JPG/JPEG picture.
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Quickly optimize a JPG/JPEG to get the best quality/size ratio.
Quickly add artefacts to a JPG/JPEG picture.
Quickly remove artefact distortions from a JPG/JPEG picture.
Quickly remove a border from a JPEG photo.
Quickly get rid of the background in a JPG/JPEG file.
Quickly add random pixels and white noise to a JPEG picture.
Quickly extract red, green, and blue channels from a JPEG.
Quickly extract cyan, magenta, yellow, and key channels.
Quickly extract hue, saturation, and light color channels.
Quickly extract a color palette of the most popular colors.
Quickly change the number of colors in a JPEG photo.
Quickly create a dither JPG with a limited number of colors.
Quickly convert the given JPEG picture into a two-color JPEG.
Quickly create a whirl in a JPG/JPEG photo.
Quickly put a watermark on a JPG/JPEG photo.
Quickly highlight a specific area in a JPEG picture.
Quickly change a JPEG's orientation to landscape or portrait.
Quickly create a JPEG that's filled with the given color.
Quickly create a perfectly-sized JPEG for social media.
Quickly add text labels, arrows, and boxes to a JPEG photo.
Quickly check if your picture has the JPG/JPEG format.

Coming Soon

These JPG tools are on the way!
JPEG Editor

Edit JPG pictures in your browser.

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Shift a JPEG to the right or left.

Slice a JPG

Extract a part of a JPEG picture.

Split a JPGs

Split a JPG into multiple smaller JPEGs.

Merge JPGs

Join multiple JPEGs together to create a single image.

Create a JPG Preview Thumbnail

Convert a JPEG picture to a smaller preview thumbnail.

Convert a Sequential JPG to a Progressive JPG

Convert a baseline JPEG to an interlaced JPEG.

Convert a Progressive JPEG to a Sequential JPEG

Convert an interlaced JPG to a baseline JPG.

Convert JPG to PDF

Create a PDF document from one or more JPG pictures.

Convert PDF to JPG

Extract PDF pages as JPG pictures.

Convert JPG to EPS

Create an EPS file from a JPG picture.

Convert EPS to JPG

Create a JPG picture from an EPS file.

Convert JPG to JPEG2000

Convert JPEG photos to JPG 2000 photos.

Convert JPG2000 to JPEG

Convert JPEG 2000 images to JPG images.

Convert JPG to ICO

Convert JPEG images to ICO icons.

Convert ICO to JPEG

Convert ICO icons to JPG images.

Convert JPG to TIFF

Convert JPEG images to TIFF images.

Convert TIFF to JPEG

Convert TIFF images to JPG images.

Convert JPEG to QOI

Convert JPG pictures to QOI (Quote OK Image Format) pictures.

Convert QUI to JPEG

Convert QUI pictures to JPG pictures.

Convert JPG to PIK

Convert JPEG images to PIK images.

Convert PIK to JPEG

Convert a PIK image to a JPG image.

Convert JPG to PPM

Convert a JPEG image to a PPM image.

Convert PPM to JPEG

Convert a PPM image to a JPG image.

Convert JPG to BPG

Convert a JPEG image to a BPG image.

Convert BPG to JPEG

Convert a BPG image to a JPG image.

Convert JPG to RGB

Convert a JPEG image to raw RGB values.

Convert RGB to JPEG

Convert raw RGB values to a JPG image.

Convert JPEG to RGBA

Convert a JPG image to raw RGBA values.

Convert RGBA to JPG

Convert raw RGBA values to a JPEG image.

Convert JPEG to ARGB

Convert a JPG image to raw ARGB values.

Convert ARGB to JPG

Convert raw ARGB values to a JPEG image.

Convert JPG to BGR

Convert a JPEG image to raw BGR values.

Convert BGR to JPEG

Convert raw BGR values to a JPG image.

Convert JPG to BGRA

Convert a JPEG image to raw BGRA values.

Convert BGRA to JPEG

Convert raw BGRA values to a JPG image.

Convert JPG to ABGR

Convert a JPEG image to raw ABGR values.

Convert ABGR to JPEG

Convert raw ABGR values to a JPG image.

Convert JPG to FLIF

Convert a JPEG image to a FLIF image.

Convert FLIF to JPEG

Convert a FLIF image to a JPG image.

Convert JPG to AV1

Convert a JPEG image to an AVIF (AV1) image.

Convert AV1 to JPEG

Convert an AVIF (AV1) image to a JPG image.

Convert JPEGs to Animated GIF

Convert multiple JPGs to a GIF animation.

Convert JPEGs to Animated PNG

Convert multiple JPGs to an APNG animation.

Convert JPEGs to Animated Webp

Convert multiple JPGs to a Webp animation.

Convert JPG to Excel

Create an Excel spreadsheet with colored cells from a JPEG.

Mix Two JPEGs

Combine two JPG/JPEG pictures together.

Slowly Load a JPG

Load a JPG slowly pixel-line by pixel-line.

Create a Single Color JPG

Generate a one-color JPEG of any size.

Create a Glitch JPG

Randomize bytes in a JPEG and create a glitched JPEG.

Enhance a JPG

Increase the quality of a JPEG picture.

Watercolor a JPG

Apply the watercolor effect on a JPG photo.

Create ASCII Art from a JPEG

Convert a JPG to an ASCII art image.

Create JPG from ASCII Art

Convert an ASCII drawing into a JPEG drawing.

Create ANSI Art from JPG

Convert a JPEG to an ANSI art image.

Create JPG from ANSI Art

Convert an ANSI drawing to a JPEG drawing.

Rename a JPG

Change the filename of a JPG.

Mirror a JPEG

Create a mirror copy of a JPG image.

Make a JPEG Symmetric

Create convert the given JPG into a symmetric JPG.

Quantize a JPEG

Apply a color quantization algorithm on a JPG picture.

Add Sound to JPEG

Add sound to a JPG picture.

Fix a Broken JPEG

Try to recover a JPG that has been damaged.

Extract JPG Metadata

Show the hidden metadata (EXIF info) in a JPEG picture.

Add JPG Metadata

Add hidden metadata (EXIF info) to a JPEG picture.

Delete JPG Metadata

Remove the hidden metadata (EXIF info) from a JPEG picture.

Add a Secret JPG Comment

Insert a hidden comment in a JPG picture (as EXIF entry).

Find Pixels in JPG

Find positions of certain pixels in a JPEG.

Replace Pixels in JPG

Replace certain pixels in a JPEG.

Delete Pixels in JPG

Delete certain pixels in a JPEG.

Swap Pixel Pairs in JPG

Swap every two pixels in a JPEG row-wise or column-wise.

Swap Blocks of Pixels in JPG

Swap pixel blocks of any size in JPEG rows or columns.

Create Perturbations in JPG

Add errors to a JPEG and produce a modified picture.

Compare Two JPEGs

Find differences between two JPG pictures.

JPG Viewer

View JPEG pictures in your browser.


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Created with love by

We're Browserling — a friendly and fun cross-browser testing company powered by alien technology. At Browserling we love to make people's lives easier, so we created this collection of online JPG tools. Our tools have the simplest possible user interface that is focused on getting things done. People love our tools and they are now used by millions of people every month. Our JPG tools are actually powered by our web developer tools that we created over the last couple of years. Check them out!

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