Image Resizer

Change the pixel size of any photo right in your browser. Set an exact width and height, or scale by a percentage, then download the result. Your image never leaves your device.

Add your image

JPG · PNG · WebP · AVIF

Drop an image here or click to browse

One image at a time

JPGPNGWebPAVIF

Result

Add an image to start

Your resized image will appear here

How to resize an image

Add your image

Drop a JPG, PNG, WebP or AVIF file, or click to browse. One image is processed at a time.

Set the new size

Type a width and height in pixels, or click a quick scale shortcut. Keep the aspect ratio locked to avoid stretching.

Download the resized image

Click Resize image, check the new dimensions and file size, then download the result.

Why use the Aihangsoft Image Resizer

Resize by pixels or percent

Enter an exact width and height, or use a 25% to 200% shortcut that scales straight from the original dimensions.

Keep the aspect ratio locked

With the lock on, changing one side recalculates the other, so people, products and text never look stretched.

100% private

Decoding, resizing and encoding all happen inside your browser tab. Your photos are never uploaded to a server.

Features that make a difference

Width and height in pixels

Type the exact output size you need, for example 1920 x 1080 for a video thumbnail or 800 x 800 for a product listing. Any value from 1 pixel upward is accepted, including sizes larger than the original, which upscales with interpolation.

Use case: hitting an exact pixel target for a site or upload form

Percentage shortcuts

Scale the whole picture at once with the 25%, 50%, 75%, 100% and 200% buttons. Every shortcut is calculated from the original dimensions, so 50% of a 4000 x 3000 px photo gives 2000 x 1500 px, and you can still fine tune the numbers afterwards.

Use case: cutting phone photos down to a shareable size

Locked or free aspect ratio

Leave the lock on to change one side and let the other follow, or unlock it to set both sides independently for a deliberate stretch. The hint under the fields reminds you which mode you are in before you export.

Use case: exact squares, banners and cover images

Pick the output format

Keep the original format, or export as JPG, PNG or WebP. JPG and WebP accept a quality setting from 10 to 100, while PNG stays lossless and keeps transparency. Because JPG has no alpha channel, transparent areas are filled with white before encoding.

Use case: smaller files for the web, lossless files for print

Related tools

Image Compressor

Shrink file size with a quality slider

Image Cropper

Cut a frame and resize in one step

AI Image Upscaler

Enlarge and add real detail

Image resizer FAQ

No. Enlarging stretches the existing pixels and the browser interpolates between them, which adds smoothness but no new detail. A photo resized to 200% looks bigger and softer, not sharper. If you need genuine detail at a larger size, use the AI Image Upscaler, which reconstructs texture instead of interpolating.
Yes, in two ways. Downscaling resamples the image, which is normally invisible but can soften very fine detail at aggressive ratios. On top of that, saving as JPG or WebP re-encodes the pixels, so the quality slider controls how much data is thrown away. Keep it at 90 or above for a result that looks like the original. PNG output is lossless.
No. The image is decoded and redrawn onto a canvas, and a canvas encoder writes pixels only, so EXIF data such as camera model, capture date, orientation and GPS location is dropped. That is usually welcome for privacy, and the standalone Remove EXIF tool does the same thing on purpose.
You can open JPG, PNG, WebP and AVIF files as long as your browser can decode them, which covers current versions of Chrome, Edge, Firefox and Safari. You can save the result as JPG, PNG or WebP, or keep the original format. HEIC files from some phones cannot be decoded in the browser, so they are rejected with a clear message. Note that JPG has no transparency, so transparent areas are filled with white.
No. Your image is opened with the browser image decoder, resized on a canvas and encoded again in the same tab. Nothing is sent to any server, so there is no upload, no account, no watermark and no file size limit. That makes the tool safe for private photos, IDs and documents.

Resize your first image now

Free, private and instant. No account needed.

Upload an image