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The sample raises a 1200 by 800 picture to 130 brightness and 110 contrast.

Output format

Result

130

brightness(130%) contrast(110%)

Contrast
110%
On screen
12.5 in × 8.3 in
Original
1,200 × 800

Brightness 100 and contrast 100 leave the picture as it was. Zero brightness turns it black and 200 makes it twice as bright. Zero contrast is a flat gray and 200 pushes the lights and the darks apart. The sample uses brightness(130%) contrast(110%). The filter is applied to the picture before it is saved. Both fields are whole percents. The screen estimate treats 96 CSS pixels as one inch. English shows inches, and the other languages show millimetres. The sample 1200 by 800 is 12.5 in × 8.3 in, and the original reads 1,200 × 800. That length is not the camera’s dots per inch. The file stays in this browser. JPEG is saved at 0.82 with white behind the picture. PNG and WebP keep the transparent corners. A file larger than 40 × 1024 × 1024 bytes is refused, and the page calls that limit 40 MB. The picture stops past 40 megapixels. The download name keeps A–Z, digits, hyphen, and underscore.

Why this exists

A browser light for a dark picture you are about to send to family or a client. 100 leaves the picture as it was. English shows inches, and the other languages show millimetres.

Brightness 100 and contrast 100 leave the picture as it was. Zero brightness turns it black and 200 makes it twice as bright. Zero contrast is a flat gray and 200 pushes the lights and the darks apart. The sample uses brightness(130%) contrast(110%). The filter is applied to the picture before it is saved. Both fields are whole percents. The screen estimate treats 96 CSS pixels as one inch. English shows inches, and the other languages show millimetres. The sample 1200 by 800 is 12.5 in × 8.3 in, and the original reads 1,200 × 800. That length is not the camera’s dots per inch. The file stays in this browser. JPEG is saved at 0.82 with white behind the picture. PNG and WebP keep the transparent corners. A file larger than 40 × 1024 × 1024 bytes is refused, and the page calls that limit 40 MB. The picture stops past 40 megapixels. The download name keeps A–Z, digits, hyphen, and underscore.

  1. 01How to use it

    A browser light for a dark picture you are about to send to family or a client. 100 leaves the picture as it was. English shows inches, and the other languages show millimetres.

    Brightness 100 and contrast 100 leave the picture as it was. Zero brightness turns it black and 200 makes it twice as bright. Zero contrast is a flat gray and 200 pushes the lights and the darks apart. The sample uses brightness(130%) contrast(110%). The filter is applied to the picture before it is saved. Both fields are whole percents. The screen estimate treats 96 CSS pixels as one inch. English shows inches, and the other languages show millimetres. The sample 1200 by 800 is 12.5 in × 8.3 in, and the original reads 1,200 × 800. That length is not the camera’s dots per inch. The file stays in this browser. JPEG is saved at 0.82 with white behind the picture. PNG and WebP keep the transparent corners. A file larger than 40 × 1024 × 1024 bytes is refused, and the page calls that limit 40 MB. The picture stops past 40 megapixels. The download name keeps A–Z, digits, hyphen, and underscore.

  2. 02What you get

    130

    12.5 in × 8.3 in

    Enteredbrightness(130%) contrast(110%)

    Brightness 130
    On screen 12.5 in × 8.3 in

  3. 03Worth knowing

    Brightness 100 and contrast 100 leave the picture as it was. Zero brightness turns it black and 200 makes it twice as bright. Zero contrast is a flat gray and 200 pushes the lights and the darks apart. The sample uses brightness(130%) contrast(110%). The filter is applied to the picture before it is saved. Both fields are whole percents. The screen estimate treats 96 CSS pixels as one inch. English shows inches, and the other languages show millimetres. The sample 1200 by 800 is 12.5 in × 8.3 in, and the original reads 1,200 × 800. That length is not the camera’s dots per inch. The file stays in this browser. JPEG is saved at 0.82 with white behind the picture. PNG and WebP keep the transparent corners. A file larger than 40 × 1024 × 1024 bytes is refused, and the page calls that limit 40 MB. The picture stops past 40 megapixels. The download name keeps A–Z, digits, hyphen, and underscore.

    The sample raises a 1200 by 800 picture to 130 brightness and 110 contrast.

Questions

QBrightness?
A130
Q110?
A110%
Q40 MB?
A40 MB

How this page works it out

A browser light for a dark picture you are about to send to family or a client. 100 leaves the picture as it was. English shows inches, and the other languages show millimetres. The sample raises a 1200 by 800 picture to 130 brightness and 110 contrast.

Brightness 130 and contrast 110 are brightness(130%) contrast(110%). 100 is the picture as it was, 0 is black or a flat gray, and 200 is twice as bright or a wider gap between light and dark. The sample 1,200 by 800 is 12.5 in × 8.3 in.

The filter is applied before the picture is saved. JPEG is 0.82 with white behind the picture. The file limit is 40 × 1024 × 1024 bytes, called 40 MB, and the picture stops past 40 megapixels. 96 CSS pixels are one inch.

  • # 130
  • # 110
  • # 1200