Resize an image online in seconds
Type in exact new dimensions, or pick from ready-made presets for Instagram, YouTube, Facebook and more — either way, choose whether your existing layers scale with the canvas or stay exactly where they are.
Open free editorStep by step
- 01
Open your image
Import the photo you want to resize; it becomes a layer on the canvas.
- 02
Set the new size
Open canvas resize and type a width and height, or start a new project from a size preset instead.
- 03
Choose how layers respond
Scale everything proportionally to the new size, or keep layers at their original size and just change the canvas around them.
Resizing the canvas vs. resizing a layer
PhotoJam’s canvas resize changes the overall project dimensions — with an option to scale every layer proportionally along with it, or leave layers exactly as they are and just grow or shrink the space around them.
Starting a brand-new project instead? Pick from built-in size presets — Instagram post and story, a YouTube thumbnail, a Facebook cover, a Twitter/X post, a LinkedIn banner, or A4 for print — instead of looking up the right pixel dimensions yourself.
An individual layer can also be scaled on its own, by dragging its selection handles, without touching the canvas at all — useful when only one photo or shape in a larger composition needs to change size.
Resizing up, making a small image larger, stretches the existing pixels rather than inventing new detail — the same tradeoff any editor makes. For the cleanest result, start from the highest-resolution version of a photo you have.
Frequently asked questions
Can I resize without stretching everything inside it?
Yes — turn off "scale content" when resizing the canvas and your layers stay at their original size and position.
Are there presets for social media sizes?
Yes, Instagram, YouTube, Facebook, Twitter/X, LinkedIn and A4 print are all built in when starting a new project.
Does resizing lose image quality?
Shrinking an image is lossless in terms of detail; enlarging it stretches the existing pixels, like any resize.
Can I lock the aspect ratio while resizing?
Yes, toggle the lock and width/height adjust together automatically.