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Image Cropping Guide

Crop Image by Pixels: read the width and height you kept

Drag the rectangle until the subject sits inside it, then read the pixel size the page prints for that selection.

Place the rectangle and read the pixel width and height. JPG, PNG, and WebP download from that selection, with JPEG and WebP at quality 0.92.

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Written by Safaat Rahman Siham, Founder & Developer at Convertify4u. Contact us.

When a brief cares about the exact region you kept, the useful habit is to place the rectangle and read the numbers. This crop shows the selection size in pixels. You watch the width and the height update as you drag, and the download is that region. Open a JPG, a PNG, or a WebP. The work stays in the tab, on your device. There are five ratio choices: freeform, a square labeled 1:1, a 4:5 portrait, a 16:9 landscape, and a Facebook frame at 1.91:1. Freeform lets both edges move independently, so the pixel readout changes in both directions. A locked ratio keeps the shape while you resize, and the readout still tells you how many pixels that shape contains. The line under the photo is the measurement. It reports the crop area as a pixel width and a pixel height, rounded to whole pixels. That is how you answer a question like "how wide is the piece I am keeping?" You move the box, you look again, and you stop when the pair of numbers matches the region you meant. The page is showing you the size of your selection. It is a readout, the result of the rectangle you placed. JPEG and WebP downloads are written at quality 0.92. A PNG stays a PNG. The file type follows the picture you opened. After you save, open the image and confirm the edges. If a logo or a chin was clipped, return to the same photo and nudge the box. The original remains on your device, so a second try is simply another placement and another reading of the pixel pair. People sometimes arrive hoping to type a target width and a target height into two boxes. The control on this page is the rectangle itself, together with the pixel numbers it reports. Place it, read it, and download the region those numbers describe.

A rectangle you place, and the pixels it reports

The readout is the honest center of this page. Drag any edge and the printed width or height changes. Lock a ratio when the shape must stay square, 4:5, 16:9, or 1.91:1, and the numbers still describe the pixels inside the box. Freeform is the choice when the brief is a custom window rather than a named shape.

How it works

  1. 1

    Open the photo

    Add a JPG, PNG, or WebP. The crop runs locally, and the rectangle starts on the picture so you can begin moving it at once.

  2. 2

    Place the box and read the pixels

    Drag until the subject is inside. Read the pixel pair printed for the crop area. Lock freeform, 1:1, 4:5, 16:9, or 1.91:1 if the shape should stay fixed.

  3. 3

    Download that region

    Save the selection. JPEG and WebP export at quality 0.92. Compare the file with the pixel pair you just read.

Use cases

A square you want to measure

Lock 1:1, scale the box, and read the edge length in pixels before you save a profile or a tile.

A wide window from a tall photo

Lock 16:9 or 1.91:1, slide the window onto the subject, and confirm the pixel height is the band you meant to keep.

A custom region with freeform

Leave the ratio unlocked, shape the rectangle around a detail, and use the readout as the record of what you kept.

Problems we solve

The numbers are smaller than the brief

The readout can only describe pixels that exist in the photo. A larger, sharper file is the way to a larger selection.

A subject sitting on the boundary

Move the box a little and watch the pixel line. The extra pixels of margin are visible in the numbers and in the preview.

Mixing a crop with a squeeze

This page keeps a region. If the whole photo must shrink into a new pixel box, that is a resize after you are happy with the framing.

Trust, speed & privacy

The size is printed before you save

Both pixel figures are on the page while you drag, so the download is a region you already measured.

The photo stays in the tab

Framing happens on your device. JPEG and WebP leave at quality 0.92, and a PNG leaves as a PNG.

Frequently asked questions