Some images stay above the target KB
Very large or detailed images may not reach the target without unacceptable quality loss.
Lower dimensions first, then compress again with a realistic target size.
Use this tool
Prepare the input and run the tool
Choose images and set a target size in KB. Result: Download compressed images and a size report.
Ready.
Compression manifest appears here.
Data handling: This page processes only selected files and form inputs in this browser session.
Readiness details
What to check before using the result
References and workflow
Open related workflowTool guide
How to use Batch Image Compressor to Target Size
Use this when uploads have a file-size limit. The report shows which images hit the target and which ones still need review.
What this tool does
Compress images toward a target KB size and download the results with a size report.
- Input
- Choose images and set a target size in KB
- Output
- Download compressed images and a size report
Step-by-step usage guide
- 1Choose the images.
- 2Set the target KB size.
- 3Download the ZIP and check the size report.
Common errors and fixes
Compressed images show artifacts
Aggressive compression can create banding, blockiness, or blurred product edges.
Increase the target size or use a higher-quality output for images where detail matters.
Transparent PNGs become larger than expected
Some transparent graphics do not compress well in photographic formats.
Test WebP and PNG outputs, then keep the smaller acceptable result.
FAQ
Can every image hit the target size?
The report marks files that still need review after quality reduction.
Does it run locally?
Yes. Compression uses browser canvas output.