How to resize an image to a specific KB size
- Select one JPG or PNG passport photo or image.
- Enter the maximum file size required, such as 25 KB or 100 KB.
- Resize locally, review the final size, and download the optimized image.
Image Resizer
Reduce image file size automatically, resize by width and height, or meet a specific KB limit while keeping the best practical quality.
or drop one image here
One JPG or PNG up to 25 MiB
Target from 5 KB to 5,000 KB
Files remain in your browser
No file upload
No account required
Image size questions
Can I reduce a passport photo to 25 KB?
Yes. Enter 25 KB and the tool will reduce JPEG quality and, when necessary, image dimensions to stay at or below the target.
Will the result be exactly the target size?
The result is kept at or below the requested limit. Exact bytes vary because browsers encode images differently.
Can I resize without choosing a KB size?
Yes. Smart reduce is the default and compresses at high quality without changing image dimensions.
Is my photo uploaded?
No. Decoding, resizing, compression, preview, and download all happen in this browser.
Need to place several images into a document? Convert JPG or PNG to PDF.
About this tool
Meet image dimensions and file-size limits
Image Resizer adjusts JPEG quality and, when necessary, pixel dimensions to produce the smallest change that fits your selected limit.
Useful for
- Prepare passport photos and application uploads.
- Reduce large camera images for email or web forms.
- Set exact width and height when a portal requires them.
Good to know
- The result is a JPEG at or below the requested size, not an exact byte count.
- PNG transparency is flattened in the JPEG result.
- Very low targets can noticeably reduce detail.