Image Resizer
Change the width and height of an image, in pixels, as a percentage, or from an exam or ID preset, and optionally keep the file under a size in KB. The image is resized on your device and never uploaded.
- Runs on your device
- No sign-up
- Free, no watermark
Guide: Best Image Sizes for Social Media in 2025: The Complete Cheat Sheet
How to use the Image Resizer
- 01Drop an image into the box, or click it to choose one. iPhone HEIC photos are converted to JPG first.
- 02Choose Pixels to type a width and height, or Percentage to scale with the slider. Or pick a Preset to fill in an exam or ID size.
- 03Leave Keep aspect ratio on to avoid stretching, or turn it off to set both sides freely.
- 04Optionally type a Max file size in KB.
- 05Press Resize image, check the preview and new file size, then download it.
Good to know
Runs on your device
Your browser resizes the image. Nothing is sent to a server.
Pixels or percentage
Type an exact width and height, or scale from 1% to 200% of the original. The ratio lock stops stretching.
Exam and ID presets
SSC, UPSC, bank exam, NEET, passport and PAN presets fill in the pixel size and maximum KB. Every value stays editable.
Format and file size
PNG, JPG and WebP keep their format (JPG and WebP at 90% quality). With a maximum KB set, the result is a JPG under that size.
Frequently asked questions
Is my image uploaded?
No. Resizing happens in your browser, and the image never leaves your device.
Can I resize a photo for SSC, UPSC or a passport form?
Yes. Pick the form from the Preset list and the width, height and maximum KB are filled in. Check them against your official notification and change them if they differ. A preset sets exact pixels, so a photo of a different shape is stretched; to crop it to shape and meet a minimum KB as well, use the Exam Photo & Signature Resizer.
How does the maximum file size work?
When you type a Max file size, the image is saved as a JPG at the highest quality that keeps it at or under that many KB (counted as 1,000 bytes, so it passes either way a site counts). The width and height never change. If the image is still too big at 35% quality, you are told, and you can make it smaller or raise the limit.
Will resizing reduce quality?
Making an image smaller keeps it sharp, as the browser uses high-quality smoothing. Enlarging it beyond its original size can't add detail, so it may look soft. JPG and WebP files are re-saved at 90% quality, or lower when a maximum file size needs it.
How large can the new image be?
Width and height can each be up to 16,000 pixels, and the new image can be up to 64 megapixels in total on computers and Android, or 16 megapixels (for example 4900 × 3265) on iPhone and iPad, which is the most Safari allows. If you pick a bigger size, the tool tells you before resizing.
Which formats can I resize?
Any image your browser can open, plus iPhone HEIC photos, which are converted to JPG on your device first. PNG, JPG and WebP are saved in the same format. GIF, BMP and other formats are saved as PNG, and animated GIFs keep only their first frame.