Reduce Image Size in KB
Type the exact number of kilobytes you need and get a file that fits - any image, any target.
Any Number of Kilobytes You Need
Upload forms rarely agree on a limit. One asks for 40 KB, the next for 120 KB, a third gives you a range. Rather than guessing at a quality percentage and checking the file size afterwards, type the number the form actually gave you and let the compressor find the setting that fits. It works by re-encoding at several quality levels and keeping the best result that stays under your target, then falls back to scaling the image down only if nothing else will fit - and tells you when it has done so.
How to Compress an Image
Upload your image
Pick a JPG, PNG, WebP, or GIF file from your device. It stays on your computer - nothing is sent to a server.
Set a target size or quality
Type the exact KB size a form or upload limit requires, tap one of the presets, or switch to the quality slider for manual control.
Download the compressed file
Check the before and after sizes, then save the smaller image in JPG, PNG, or WebP.
Everyday KB Targets
- Government and exam portals with unusual limits like 40 or 120 KB
- Signature and photo fields with separate size caps
- Content systems that reject anything over a set kilobyte figure
- Email systems with tight per-attachment limits
- Trimming images to speed up a slow-loading page
- Matching a size limit written in a submission guideline
Reducing to an Exact KB Size
What is the smallest size I can target?
You can type any number from 1 KB upwards. Very small targets on detailed photos will force a resize, which the tool reports so you are never surprised by the result.
Does it measure KB the same way my computer does?
Yes - 1 KB is 1024 bytes, the same convention your operating system and most upload validators use.
Which format should I choose?
JPG and WebP can hit small targets; PNG usually cannot because it is lossless. Leave the format on Keep unless the destination requires something specific.
Can I see the size before downloading?
Yes. The original size, the compressed size and the percentage saved are all shown above the preview, before you save anything.
Related tools
Compress Image to 50KB
Reduce a photo to 50 KB or less - the most common cap for passport-style photos on application forms.
Compress Image to 100KB
Get any photo under 100 KB while keeping it sharp - enough room for a clear, detailed image.
Reduce Image Size in MB
Shrink oversized photos to a target measured in megabytes, without losing resolution.