Getting Your Images to the Right Size
Every platform wants different dimensions. Instagram wants squares (mostly). YouTube thumbnails need to be exactly 1280x720. Your website header has specific requirements. Profile pictures need to be tiny.
Resizing images for each use case used to require Photoshop. Now it takes about 30 seconds.
Basic Resizing
Our Image Resizer keeps things simple:
- Upload your image
- Enter new dimensions (or choose a preset)
- Download the resized version
You can enter exact pixel values or resize by percentage. whatever works for your situation.
The Aspect Ratio Thing
Here's something that trips people up: if you change width and height independently, your image will stretch or squash.
That's usually not what you want. A photo of a person stretched horizontally looks weird and obviously wrong.
The fix is to lock the aspect ratio. When you change the width, the height adjusts automatically to maintain proportions. No stretching, no squashing.
If you actually need specific dimensions that don't match your image's proportions, you'll want to crop instead — remove parts of the image rather than distorting it.
Common Sizes You'll Need
I've resized images for pretty much every platform at this point. Here are the dimensions that actually matter:
Social media posts:
- Instagram square: 1080 x 1080
- Instagram vertical: 1080 x 1350
- Facebook/LinkedIn: 1200 x 630
- Twitter: 1200 x 675
Video thumbnails:
- YouTube: 1280 x 720
Profile pictures:
- Most platforms: 500 x 500 works universally
- Tiny avatars: 100 x 100 to 200 x 200
Website images:
- Full-width headers: 1920 x varies
- Blog post images: 1200 x 800 is a common sweet spot
- Thumbnails: 300 x 300 or similar
Upscaling vs Downscaling
Making images smaller always works fine. You're keeping some pixels, discarding others. Quality stays good.
Making images larger is trickier. You're creating new pixels that didn't exist. The result often looks blurry or pixelated.
General rule: you can safely make images smaller. Making them larger works okay for modest increases (maybe 20-30% larger), but don't expect miracles.
After Resizing
Once you've got the right dimensions, you'll probably want to compress the file too. Resizing doesn't automatically optimize file size.
Head over to our Image Compressor after resizing to shrink the file size while keeping visual quality.
Batch Resizing
If you have multiple images that all need the same dimensions, here's the efficient approach:
Process them through our resizer in a batch rather than one at a time. Upload multiple files, set your target size once, and process them all together.
Give It a Try
Need images at specific dimensions? Our Image Resizer handles it quickly.
Free, no signup, works right in your browser.
Need to change image format too? Check out our guide on converting between PNG, JPG, and WebP.