Resize an image online
To resize an image online with Picstea, open it in the editor, choose Image → Image Size…, type the new width or height in pixels and export. The proportions stay correct, it is free, and the image never leaves your device.
Open the editor — free, no sign-up
Resize an image in four steps
- Open the editor and drop your image (PNG, JPEG, WebP, GIF or PSD) on the page.
- Choose Image → Image Size….
- With Constrain proportions ticked, type the new width or height in pixels. You can also set the resolution (ppi) for printing.
- Choose File → Export As…, pick a format and save.
Other ways to change the size
- Canvas Size… (Image menu) adds or removes space around the picture. Choose one of nine anchors to say which side grows, or tick Relative to add a fixed amount, for example 20 pixels on every side.
- Crop tool cuts the picture to the area you drag. Cropping is non-destructive, so you can change it later.
- Trim… removes transparent or single-colour borders automatically.
- New document presets — about 80 ready-made sizes for social posts, print, photos, screens and icons, in pixels, inches, centimetres or millimetres. Place your image into one with File → Place Image as Layer and scale it to fit.
Tips for good results
- Make images smaller rather than larger: enlarging cannot add detail that isn't there.
- After shrinking a photo, Filter → Sharpen → Unsharp Mask brings back crisp edges.
- For the web, export as WebP or JPEG to keep the file small; see the image compressor guide.
Limitations
Images can be up to 12,000 pixels per side (36 megapixels). Batch resizing isn't available yet, and there is no AI upscaling.
How-to guides
- Blur a photo background
- Make a background transparent
- Add text to a photo
- Make a photo black and white
- Sharpen an image
- Liquify a photo
Related tools
- Online photo editor
- PSD editor
- PNG editor
- JPEG editor
- WebP editor
- Image compressor
- Photo filters
- Image converter
Questions
- How do I resize an image without stretching it?
- In Image → Image Size…, keep Constrain proportions ticked and type only the width or the height; the other value follows.
- What is the difference between Image Size and Canvas Size?
- Image Size scales the whole picture. Canvas Size keeps the picture as it is and adds or removes space around it, for example to add a border or make it square.
- Can I make an image smaller and then bigger again without losing quality?
- Yes, inside Picstea: pixel layers keep their original pixels and are only drawn at the new size, so scaling back up restores the detail. The exported file has the size you chose.
- Can I resize many images at once?
- Not yet. Image Size cannot be recorded in an action, so batch processing can't resize. Resize images one at a time for now.
- Are my images uploaded?
- No. Resizing and exporting happen on your device. Picstea has no server that receives images.