Resize to Exact KB
Resize and compress JPG or PNG to a target KB size. Choose an upper limit or exact byte count and verify the final file size locally.
Loading your local workspace…
Choose a maximum size or an exact byte size. Exact mode adds a valid JPG comment or PNG ancillary chunk when needed; padding does not improve quality. If resizing is disabled and the target is too small, the tool reports it.
About Resize Image to Exact KB
Prepare an image for an upload form with a file-size limit. This tool checks the encoded bytes, rather than estimating size from pixel dimensions. Choose at-or-below mode for a maximum, or exact mode when a specific byte count is required.
How to use this tool
01 · Prepare your input
Choose a supported image from your device, or try the built-in sample.
02 · Enter your target size
Enter the target KB, choose at-or-below or exact size, and decide whether smaller dimensions are allowed.
03 · Review the result
Create the result and check the verified byte size before downloading the JPG or PNG.
Before you download.
What to know about Resize Image to Exact KB.
What does exact KB mean here?
One KB is 1,000 bytes. Exact mode verifies the final bytes and can add a valid JPG comment or PNG ancillary chunk. Padding increases size, not quality.
Are my files uploaded for processing?
No. File contents are processed in your browser. The site, codecs and any required models still need to load over the network; local results depend on your device and browser.