Home Resize

Resize

Lock a 1920 by 1080 picture to a width of 800 and the height becomes 450.

Preserve aspect ratio
Output format

Result

800

Height
450
Megapixels
0.36
On screen
8.3 in × 4.7 in
Original
1,920 × 1,080

With the lock on, the other side is Math.round of the original ratio, and the smallest side is 1. A file larger than 40 × 1024 × 1024 bytes is refused, and the page calls that limit 40 MB. The picture and the output both stop past 40 megapixels. JPEG is saved at 0.82, and white is painted behind it because JPEG has no transparency. The screen estimate treats 96 CSS pixels as one inch. English shows inches, and the other languages show millimetres. That length is not the camera’s dots per inch. The download name keeps A–Z, digits, hyphen, and underscore, and every other run of characters becomes one hyphen.

Why this exists

A browser resize for a picture. The sample 1920 by 1080 becomes 800 by 450. English shows inches, and the other languages show millimetres.

With the lock on, the other side is Math.round of the original ratio, and the smallest side is 1. A file larger than 40 × 1024 × 1024 bytes is refused, and the page calls that limit 40 MB. The picture and the output both stop past 40 megapixels. JPEG is saved at 0.82, and white is painted behind it because JPEG has no transparency. The screen estimate treats 96 CSS pixels as one inch. English shows inches, and the other languages show millimetres. That length is not the camera’s dots per inch. The download name keeps A–Z, digits, hyphen, and underscore, and every other run of characters becomes one hyphen.

  1. 01How to use it

    A browser resize for a picture. The sample 1920 by 1080 becomes 800 by 450. English shows inches, and the other languages show millimetres.

    With the lock on, the other side is Math.round of the original ratio, and the smallest side is 1. A file larger than 40 × 1024 × 1024 bytes is refused, and the page calls that limit 40 MB. The picture and the output both stop past 40 megapixels. JPEG is saved at 0.82, and white is painted behind it because JPEG has no transparency. The screen estimate treats 96 CSS pixels as one inch. English shows inches, and the other languages show millimetres. That length is not the camera’s dots per inch. The download name keeps A–Z, digits, hyphen, and underscore, and every other run of characters becomes one hyphen.

  2. 02What you get

    800

    450

    Entered1920×1080

    Width (px) 800
    Height 450

  3. 03Worth knowing

    With the lock on, the other side is Math.round of the original ratio, and the smallest side is 1. A file larger than 40 × 1024 × 1024 bytes is refused, and the page calls that limit 40 MB. The picture and the output both stop past 40 megapixels. JPEG is saved at 0.82, and white is painted behind it because JPEG has no transparency. The screen estimate treats 96 CSS pixels as one inch. English shows inches, and the other languages show millimetres. That length is not the camera’s dots per inch. The download name keeps A–Z, digits, hyphen, and underscore, and every other run of characters becomes one hyphen.

    Lock a 1920 by 1080 picture to a width of 800 and the height becomes 450.

Questions

QResult?
A800
Q450?
A450
Q96?
A96

How this page works it out

A browser resize for a picture. The sample 1920 by 1080 becomes 800 by 450. English shows inches, and the other languages show millimetres. Lock a 1920 by 1080 picture to a width of 800 and the height becomes 450.

Lock the sample 1920 by 1080 to a width of 800 and the height is 450. The other side is Math.round of the original ratio, and it does not go below 1. The screen length is 8.3 in × 4.7 in.

The file limit is 40 × 1024 × 1024 bytes, and the page calls it 40 MB. The picture and the output both stop at 40 megapixels. JPEG is 0.82, and white is painted behind it. 96 CSS pixels are one inch. That length is not the camera’s dots per inch.

  • # 800
  • # 450
  • # 1920