Resize Image
Resize a JPG, PNG, or WebP by exact dimensions, percentage, or preset, with an aspect-ratio lock.
Drop an image here, or click to upload
JPG, PNG, WebP, GIF, BMP — up to 30MB
Related Tools
Learn more about the Resize Image
Resize an Image Online, Free
Resizing changes an image's pixel dimensions — how many pixels wide and tall it is — without cropping any content out. This tool resizes a JPG, PNG, or WebP by exact width/height, by percentage, or with a one-click preset for common social media sizes, with an aspect-ratio lock so proportions stay correct unless you deliberately turn it off.
Upload an image, adjust the size, and download the result — entirely in your browser via the Canvas API. Nothing is uploaded to a server. This is the same editor as Edit Image, opened straight to the Resize tool — crop and rotate/flip are also available without leaving the page if you need them.
Why Resize an Image?
Fit an Exact Upload Slot
Profile photos, banners, and thumbnails often reject images outside a specific pixel size. Resize to that exact dimension before uploading.
Reduce File Size Without Compressing
A smaller image at the same quality setting produces a smaller file — resizing down is often the biggest single lever before you even touch compression.
Prep for Social Media
Each platform expects different dimensions. The built-in presets skip the "what size is a Twitter post again?" lookup.
Standardize a Batch
Resizing a set of product photos or thumbnails to the same dimensions keeps a gallery or listing page visually consistent.
Features
Exact Dimensions
Type an exact width and height in pixels for a precise fit.
Percentage Scaling
Scale to 25%, 50%, 75%, or 100% of the original size in one click.
Social Media Presets
One-click sizes for Instagram, Twitter, Facebook Cover, and YouTube Thumbnail.
Aspect Ratio Lock
Width and height stay proportional by default — unlock to stretch freely.
No Server Upload
Resizing runs via the Canvas API in your browser — the image is never sent anywhere.
Download in Any Format
Export the resized result as JPG, WebP, or PNG, independent of the original.
How to use
Paste your input in the left editor. The output appears automatically on the right. Use the toolbar buttons to copy, download, or transform the result.
- Paste or type your content in the input editor on the left.
- The formatted output is generated automatically.
- Use Copy, Download, or other actions from the output toolbar.
- Click the expand icon to view the output in fullscreen.
FAQ
Is this image resizer free?
Yes, it is completely free to use with no limits, signup, or account required.
Is my image uploaded to a server?
No. Resizing runs entirely in your browser using the Canvas API. Your image is never uploaded or sent to a server.
How do I resize to an exact pixel size?
Type the width and/or height directly. With the aspect-ratio lock on (the default), changing one automatically updates the other to keep the image proportional — turn it off to set both independently.
Can I scale by percentage instead?
Yes, use the 25%/50%/75%/100% quick-scale buttons to resize relative to the current size.
Are there presets for social media sizes?
Yes — Instagram Square, Instagram Portrait, Twitter Post, Facebook Cover, YouTube Thumbnail, and HD (1080p) are all one click.
Can I crop or rotate the image too?
Yes. This page is the same editor as Edit Image, opened straight to the Resize tool — switch to Crop or Rotate & Flip without leaving the page or losing your edit.
What format does the resized image download as?
Choose JPG, WebP, or PNG at download time, independent of the original file format, with an adjustable quality setting for JPG/WebP.