Compress Image to KB
Make a JPG smaller than your chosen KB limit. Automatically adjust JPEG quality and optionally resize dimensions for upload requirements.
Your input is sent to this site only after you choose Convert on server. The conversion runs for this request and no history is saved. Upload up to 4 MiB combined; Office files have a 2 MiB limit.
Before you convert: Outputs JPEG. Transparency becomes white; dimensions may shrink if resizing is enabled. Confirm any separate pixel-dimension requirement.
Choose your file
Choose a file or load the example to see how the converter works.
Choose your options
The defaults work for most files. Change a setting only when you need to.
How to use Compress Image to KB
- Choose your file or load the example.
- Review the settings and the format notes before continuing.
- Select Convert on server and download the result.
Meet a form’s file-size limit
Some forms accept a photograph only when it is below a particular upload limit. Set the desired size in kibibyte-style units of one thousand twenty-four bytes and upload a PNG, JPEG or WebP image. The tool searches JPEG quality settings for an output below that limit. If permitted, it also reduces the pixel dimensions when quality changes alone cannot achieve the requested size.
Review the actual output before submitting
The result is always JPEG, so transparent backgrounds become white and some image detail is lost. A strict byte limit and a strict pixel-size requirement can conflict; turn off resizing when a form requires the original dimensions. If the target cannot be met under those conditions, the tool reports an error instead of returning an oversized file. The size summary compares input and output, and the preview helps you check that important details remain readable.
Where is my file processed?
The selected file is sent to this site only when you run the server conversion. Processing uses memory without a saved conversion history.
Is input uploaded?
This tool sends input to this site’s conversion API after you select Convert on server. Files use bounded workers and, when needed, private temporary folders deleted after processing or cancellation. No conversion history is saved. The converter does not upload files to a third-party conversion service.