Resize Image
Resize images to the exact width and height you need, in pixels, without uploading anything to a server. Lock the aspect ratio to avoid distortion, or set fully custom dimensions for thumbnails, avatars, banners, and product shots.
Overview
Resizing in the browser means there's no waiting on uploads or downloads and no privacy trade-off — your photo is decoded, redrawn at the target resolution with high-quality smoothing, and exported on the spot. It's the fastest way to hit a platform's required dimensions or simply make a giant photo a manageable size.
What this tool does
The resizer redraws your image at a new pixel width and height using high-quality interpolation. You can keep the original proportions with an aspect-ratio lock so the second dimension fills in automatically, or unlock it to stretch to any exact size, then export to JPG, PNG, or WEBP.
Problems it solves
- A platform requires an exact image size (e.g., a 1080×1080 social post or a 400×400 avatar).
- A photo is too large in dimensions and slows down a page or won't fit an email.
- You need consistent thumbnail sizes across a gallery or catalog.
- An upload form rejects images above a certain resolution.
Key benefits
- Set exact pixel dimensions for width and height
- Lock aspect ratio to prevent stretching
- High-quality smoothing keeps results sharp
- Instant preview before you download
Who it's for
How to use it
- 1
Upload your image
Drop a JPG, PNG, or WEBP into the upload area. The tool reads its current width and height and pre-fills them for you.
- 2
Enter your target dimensions
Type the width and/or height in pixels. With the aspect-ratio lock enabled, the other value updates automatically to avoid distortion.
- 3
Pick an output format
Choose JPG, PNG, or WEBP for the resized result depending on whether you need transparency or the smallest possible file.
- 4
Resize and download
Click Resize to render the new image, review the before/after preview, then download your perfectly sized file.
Example input and output
Example input
A 4032×3024 photo straight from a phone camera (about 3.8 MB JPG).
Example output
A 1200×900 JPG suitable for a blog post, around 280 KB.
With the aspect ratio locked, setting the width to 1200 px automatically set the height to 900 px, keeping the photo perfectly proportional while making it page-friendly.
Common use cases
Meet social media specs
Resize to exact dimensions for Instagram posts, YouTube thumbnails, LinkedIn banners, or Twitter/X headers in seconds.
Build website thumbnails
Generate consistent thumbnail and card sizes so your grids and galleries line up cleanly and load fast.
Shrink photos for email
Bring oversized camera photos down to a sensible resolution so they send and open without issues.
Prepare marketplace listings
Match the required product image dimensions for Etsy, eBay, Amazon, or Shopify without cropping out detail.
Tips & best practices
Keep the aspect ratio locked
Unless you deliberately want to stretch an image, leave the aspect-ratio lock on so your photo keeps its natural proportions and never looks squashed.
Don't upscale beyond the original
Enlarging an image past its native resolution can't add detail and may look soft. Start from the highest-resolution source you have when you need a larger size.
Resize first, then compress
Reducing the pixel dimensions already cuts file size dramatically. Follow up with the compressor if you need to hit a specific kilobyte target for the web.