Image Resizer

See what the image resizer can do

Exact pixels, percentages or a ready social preset - At Lanczos quality.

Every size you need example created with the Image Resizer — Every size you need

Smaller file, fast example created with the Image Resizer — Smaller file, fast

Try the image resizer

Three simple steps

1

Upload your image

Drop in a JPG, PNG, WebP or HEIC photo, up to 16 MB.

2

Choose a size

Type exact pixels like 1280x720, a single width to keep the aspect ratio, a percentage such as 50%, or tap a social preset.

3

Download the resized image

Run it and save the result, sized exactly for where it is going. It is kept in your files too.

Convert your result

Need the finished image in another format? Convert it in the same workspace.

PNG to JPGFree converter PNG to WebPFree converter JPG to PDFFree converter All convertersAll file converters

Resize an image to the exact size you need

Resizing changes how many pixels an image has. Make a 4000-pixel camera photo small enough to email, scale a screenshot down for a blog, or fit a banner to an exact ad slot. Because every platform expects its own dimensions, resizing is usually the first step before you upload anything.

img.now gives you three ways to resize, so you are never fighting the tool:

Exact pixels - Type a width and height such as 1280x720 when a platform demands a precise size.
Keep the aspect ratio - Enter just a width (or just a height) and the other side is worked out for you, so nothing looks squashed.
Percentage - Type 50% to halve a picture, or 150% to enlarge it a little.
Social presets - One tap for Instagram, Stories, YouTube, 4K and more.

Resize vs. crop vs. compress

These three get mixed up. Resizing scales the whole picture to new dimensions. Cropping cuts away part of the frame to change the shape. Compressing shrinks the file size while keeping the dimensions the same. Many workflows use all three: crop to the right shape, resize to the right pixels, then compress for the web.

Quality that holds up

Cheap resizers produce jagged edges and muddy colour. img.now uses Lanczos resampling, which weighs surrounding pixels to keep lines smooth and detail intact when shrinking. Every resize runs in your img.now workspace and is saved to your files, so you can resize once and reuse the result across projects.

Changing format too? See all file converters for every format pair. Sizing for a specific platform? The YouTube thumbnail maker outputs an exact 1280x720, and the photo collage maker combines several images into one frame.

Related guides

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Product Photo Prompts That Work

Prompt clean product shots by setting the background, surface, lighting, angle, and lens feel, with white background and lifestyle examples.

Text to Image: A Simple Guide

A clear walkthrough of turning a written description into an image, from prompt to style to ratio to refining the result.

Questions about the image resizer

Can I resize to exact pixel dimensions?

Yes. Enter a width and height like 1280x720 for an exact size, or enter just a width (or just a height) and img.now keeps the original aspect ratio so the picture is not stretched.

Will resizing blur my image?

img.now uses the Lanczos algorithm, the same high-quality resampling used by professional editors. Shrinking stays crisp; enlarging a small image past its real detail will always soften, so for big upscales use the AI Image Upscaler instead.

Which size should I use for social media?

Instagram posts are 1080x1080, Stories and Reels are 1080x1920, and YouTube thumbnails are 1280x720. img.now has one-tap presets for each so you do not have to remember the numbers.

Does resizing reduce the file size?

Yes. Fewer pixels means a smaller file, which is why resizing is one of the quickest ways to speed up a web page or fit an email limit. To shrink the file without changing dimensions, use the Image Compressor.