Image Resizer
Nothing is uploaded. The resizing happens on your own device.
Resizing without wrecking the picture
Type a width and the height follows, so the proportions stay correct. Unlock it if you deliberately want to stretch, though that almost always looks wrong on anything with a face or a straight line in it.
Smaller is safe, bigger is not
Reducing an image throws away pixels, which is fine — the detail was there and is being averaged down. Enlarging has to invent pixels that were never captured, so a 400-pixel image blown up to 1600 looks soft no matter what tool does it. It cannot add detail that was not recorded.
If you need a larger version, go back to the original file rather than enlarging a small copy.
Sizes worth knowing
- 1920 × 1080 — a full-screen background, still the most common desktop resolution.
- 1200 px wide — a sensible maximum for a blog or article image. Beyond this most readers see no difference.
- 1080 × 1080 — a square social post.
- 1200 × 630 — the standard link preview card for social sharing.
- 400 px — plenty for a profile picture, which is usually displayed far smaller than people upload.
Why the file gets smaller too
Halving both dimensions leaves a quarter of the pixels, and the file typically drops by rather more than that because there is less detail for the compressor to encode. It is the single most effective thing you can do to a page full of slow images — more than any compression setting.
Common uses
- Getting under an upload limit on a form or a job application.
- Making a page load faster, where phone photos at 4000 px wide are usually the culprit.
- Email attachments, which are often capped around 20 MB.
- Profile pictures and avatars.
Questions people ask
Will resizing reduce the quality?
Making an image smaller looks fine — detail is averaged down rather than invented. Making one larger cannot add detail that was never captured, so enlargements always look soft.
How do I keep the proportions?
Leave the checkbox ticked. Type either dimension and the other follows.
What size should a web image be?
Around 1200 px wide is plenty for an article. Most visitors will never see the difference beyond that.
Is there a file size limit?
Only your device's memory. Nothing is uploaded, so there is no server limit to hit.
Your image is not uploaded
This is the part worth being precise about, because almost every other site offering these tools works differently.
When you choose a file here, your browser reads it from your disk into memory and draws it onto a canvas. The work happens on your own machine. No copy is transmitted, because this site is a set of static files with no server behind it capable of receiving one.
The practical consequences: it works with no internet connection once the page has loaded, there is no file size limit beyond your own memory, there is no queue, nothing is retained on anyone's disk afterwards, and your photographs are not passing through a third party's infrastructure.
You do not have to take that on trust. The about page lists every network request this site makes, read live from your own browser.