Resize a Photo, Every Setting Explained (Longest Side, Fit Inside, Lock, Nearest)
Every setting in a free image resizer, on a real portrait: why the default 1920×1080 squashes it, the aspect lock, longest side, fit inside, percentage, WebP vs AVIF vs JPG, quality, and Nearest vs Lanczos on pixel art. Nothing is uploaded.
Length: 5:14Published:
What you'll learn
Why the default squashes a portrait
The aspect lock: exact size or a limit
Longest side and fit inside — no stretching
Percentage and megapixels
WebP, AVIF, JPG and quality — measured
Nearest vs Lanczos: pixel art stays crisp
Allow enlarging
In this video
Every setting in a free image resizer, on a real portrait: why the default 1920×1080 squashes it, the aspect lock, longest side, fit inside, percentage, WebP vs AVIF vs JPG, quality, and Nearest vs Lanczos on pixel art. Nothing is uploaded.
An image resizer does exactly what its settings say, and the defaults are not always what you meant. On a 4912×7360 portrait the default width and height of 1920×1080 with the aspect lock off gives a squashed 1920×1080. With the lock on, a 600×600 box becomes a limit: 400×600. Longest side 1920 gives 1281×1920 whichever way the photo faces; fit inside 1920×1080 gives 721×1080. At the same size WebP is 99.9 KB against the JPEG’s 147 KB, and AVIF came out bigger at 175 KB, so read the number. Quality 60 gives 62 KB. On a 16×16 sprite made 512×512, Lanczos smears the edges and Nearest keeps them crisp (7.4 KB against 278 KB). A size in kilobytes is the compressor’s job. Free resizes one image at a time up to 4096 px; Pro adds batches. Nothing is uploaded.
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Full transcript
Every word spoken in the video, so you can read it, search it or skim it.
A portrait photo, and the resizer’s default settings. One press — and this came out. Nothing is broken. It did exactly what the settings told it to.
Resizing a photo, every setting: six ways to set the size, the lock, the four ways of rebuilding pixels, format and quality — and three real jobs. Free, and nothing is uploaded.
The whole panel. Six ways to say how big. The aspect lock. How the pixels are rebuilt. Sharpening, and whether it may make a picture bigger. Then the format and the quality.
4912×7360 → 1920×1080
Lock on · 600×600 → 400×600
Longest side 1920 → 1281×1920 · 147 KB
Fit inside 1920×1080 → 721×1080
25% → 1228×1840
JPG 147 KB · WebP 99.9 KB · AVIF 175 KB
Quality 60 → 62.0 KB
Now a very different picture: a sixteen-pixel sprite, made thirty-two times bigger.
Lanczos 278 KB · Nearest 7.4 KB
Allow enlarging off → stays 16×16
So. A website: longest side, and WebP. A form that wants exact pixels: turn the lock on, or crop to that shape first, so nothing gets squashed. Pixel art and icons: nearest. And a size in kilobytes is the compressor’s job, not the resizer’s.
On the free plan it is one image at a time, up to four thousand and ninety-six pixels on the long side. Pro adds batches — and they still run on your own machine.
And the photo never left it. This is the browser’s own record of everything it fetched while every one of those was made — not one request carried the picture.
Free, no account, nothing uploaded. Pick how the size is set before the size itself — and I will see you in the next video.
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