100% Private (Local Processing)
Compress Multiple Images Online
Compress dozens of JPEG and WebP images in batch client-side and download as a ZIP archive.
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How to use Bulk Image Compressor
- 1
Select and upload multiple image files.
- 2
Choose output format (JPEG or WebP) and set quality parameters.
- 3
Click 'Compress All Images' to run parallel compression sweeps.
- 4
Review individual size savings, then download the bundled ZIP folder.
Capabilities
- Compresses dozens of images concurrently in-browser
- Selectable formats (JPEG compatibility or WebP compression ratios)
- Adjustable image quality parameters
- Exports all compressed images in a structured ZIP archive
Privacy & Processing
This tool operates in a sandbox directly inside your web browser. All parsing, processing, and downloads are rendered locally. Your file size, metadata, and contents never cross the network. It works completely offline.
Frequently Asked Questions
Is there a limit to how many files I can compress?
We recommend processing up to 30 files at once (approx. 50MB total) to prevent browser tab memory exhaustion on mobile devices.