Bulk Compressor
Optimize dozens of images at once. Set global quality and download all as a ZIP.
Upload an image
Drag & drop or browse
Bulk Settings
Bulk Compressor
Our Bulk Compressor is designed for high-volume workflows. Instead of processing images one by one, you can drop dozens of files into the tool, set a global quality target, and let our multi-threaded engine optimize them all simultaneously. Once finished, download all your optimized images in a single, well-organized ZIP archive. Files are queued three at a time so the browser stays responsive, and each one comes back with its new size recorded next to the original. The sidebar tracks how many files have finished and the total percentage saved across the whole batch, so you can tell immediately whether the quality setting went too far. Results are packed into a single timestamped ZIP, and no file is kept after the response is returned.
Why This Tool Exists
What makes this useful — and why I built it this way.
Time-Saving Batch Operations: Compress dozens of images simultaneously in seconds.
Unified Settings: Apply identical quality parameters across all uploaded files.
Instant ZIP Download: Retrieve all compressed assets in a single zipped package.
Format-Preserving: JPEG stays JPEG, PNG stays PNG, and WebP stays WebP, so filenames and workflows keep working.
When You'd Use This
Real situations where this tool saves the day.
Web Development: Batch-optimize website assets to improve Core Web Vitals.
Social Media Managers: Compress entire albums of images before publishing.
Email Campaigns: Shrink multiple graphic attachments to stay within size limits.
Asset Pipelines: Shrink exported screenshots or product shots before committing them to a repository.
Using Bulk Compressor
It's straightforward — here's how it works.
Upload a set of images (JPG, PNG, or WebP) with the multi-file upload box.
Adjust the global quality slider from 10% to 100% to set the compression strength.
Click 'Compress All Images' — files are processed three at a time so the page stays responsive.
Watch each row switch to Done with its original and compressed sizes shown side by side.
Review the total saved percentage in the sidebar, then click 'Download ZIP' for the whole batch.
Questions People Ask
Honest answers about how this works.
Is there any a limit on the number of files?
We recommend batches of up to 50 images for the best performance, although higher counts are supported depending on your device's memory.
Can I really mix different formats?
Yes, you can upload a mix of JPEG, PNG, and WebP files. Each will be compressed using its native optimization algorithm.
Do my images get uploaded?
Each file is posted to the tool's own compression endpoint, re-encoded at your chosen quality, and streamed straight back to your tab; originals are never stored or added to any gallery. The ZIP is assembled in the browser from the returned files. Note that PNG stays lossless, so the slider only changes its compression level.
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