Is EXIF orientation applied?

Not automatically; use rotate= when a photo appears sideways (image-metadata tells you the EXIF orientation).

Not yet: PNG and JPEG in and out.

What is the size limit?

25 megapixels and the file size of your plan (5–50 MB).

Resize Image Online – Crop, Rotate, Convert PNG to JPG

Resize Image Online

Resize, crop, rotate, flip and convert images between PNG and JPEG with high-quality resampling and adjustable JPEG quality to shrink file size.

Result

Press “Run” to see the result.

The image resize API transforms an uploaded PNG or JPEG. Set width and / or height (the other side keeps the aspect ratio) and a fit: inside (default, fits in the box), cover (fills the box and crops the centre, ideal for thumbnails), contain (fits and pads with a background colour) or fill (stretches). crop=x,y,width,height cuts a region first, rotate (90, 180, 270) and flip (horizontal, vertical) fix orientation, and no_enlarge=true never upscales.

Shrinking uses area averaging, which keeps fine details sharp without aliasing; enlarging uses bilinear interpolation. Output format=jpeg with quality (1–100, default 82) to reduce size; transparent areas are flattened on the background colour. Headers report the new size and the input / output byte counts.

Images up to 25 megapixels and the file size of your plan are accepted; everything runs in memory and nothing is stored.

Use this in your code

curl -X POST "https://apibox.io.vn/v1/image-resize?width=400&height=400&fit=cover&format=jpeg" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -F "0=@./my-file" \
  -o output

const form = new FormData();
form.append('0', fileInput.files[0]);

const res = await fetch('https://apibox.io.vn/v1/image-resize?width=400&height=400&fit=cover&format=jpeg', {
  method: 'POST',
  headers: { Authorization: 'Bearer YOUR_API_KEY' },
  body: form,
});
console.log(await res.json());

import requests

res = requests.post(
    "https://apibox.io.vn/v1/image-resize?width=400&height=400&fit=cover&format=jpeg",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    files={"0": open("my-file", "rb")},
    timeout=30,
)
open("output", "wb").write(res.content)

<?php
$ch = curl_init('https://apibox.io.vn/v1/image-resize?width=400&height=400&fit=cover&format=jpeg');
curl_setopt_array($ch, [
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => ['Authorization: Bearer YOUR_API_KEY'],
    CURLOPT_POSTFIELDS => ['0' => new CURLFile('my-file')],
]);
$response = curl_exec($ch);
file_put_contents('output', $response);

Resize Image Online

Result

Use this in your code

FAQ