Bulk Image Compressor
Compress multiple images precisely from 5KB to 2MB. Fast, client-side, and secure with batch ZIP download.
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How to Use This Tool
1
Upload Files
Choose single or multiple photos simultaneously by dragging them into the drop zone or clicking the selector.
2
Pick Size Target
Define your exact desired weight anywhere between 5KB and 2MB using the number box or instant quick presets.
3
Batch Compress
Press the Compress All button and allow the multi-pass binary algorithm to adaptively optimize each image.
4
Save Results
Download individual files directly or export the whole batch simultaneously packed neatly inside a ZIP file.
Frequently Asked Questions
Are my private images uploaded to external servers?
No, all compression procedures operate entirely inside your client browser. Your files never transit through or get saved on any server.
Can I process dozens of images at the same time?
Yes, you can choose multiple files across formats. The tool will parse each image sequentially and provide both individual and batch ZIP downloads.
What is the absolute lowest file size boundary?
The minimum size parameter is 5 KB, and the upper limit is 2 MB (2048 KB), covering common requirements for portal uploads and identity forms.
Which input formats are supported?
You can load JPG, JPEG, PNG, and modern WEBP image formats. Output files are optimized via JPEG/WEBP engines for maximum file weight reduction.
Does downloading as a ZIP cost extra data?
No, the ZIP package is generated in real-time within your computer's memory using client-side JavaScript, consuming zero outbound bandwidth.
Why did an image stop slightly below my targeted size?
The compression engine uses iterative threshold checks to ensure strict compliance, stopping once your requested limit is satisfied without causing excessive quality loss.