Bulk Image Compressor
Compresses a whole batch of images in one pass, returning a zip file — useful for prepping many product photos for upload at once.
What Does Bulk Image Compressor Do?
Compresses a whole batch of images in one pass, returning a zip file — useful for prepping many product photos for upload at once. Compressing product photos one at a time is slow when you’re prepping an entire catalog. This tool compresses a whole batch of images in one pass and returns them together in a single zip file.
Runs 100% in your browser
picflo processes this image using JavaScript on your own device. It's never uploaded, stored, or seen by anyone else — and it works even if your connection drops mid-way.
How to Bulk Compress Images Online in 3 Steps
Upload your photos
Drop as many images as you like — they all get the same treatment.
Choose a quality preset
Smaller file, Balanced, or High quality.
Download the zip
All compressed images come back together in one zip file.
Key features
- Compress dozens of images in one pass
- Three quality presets
- Returns a single zip file
Practical use cases
- A seller has dozens of product photos that are all too large and need to be compressed before uploading to a slow-loading storefront.
- A website is loading slowly because of oversized images, and a whole folder needs compressing at once.
- Someone is archiving a large photo collection and wants to shrink the total storage size in one pass.
Frequently asked questions
How many images can I compress at once?
There’s no fixed hard limit, though very large batches will naturally take longer to process.
Can I choose different quality settings for different images?
No — all images in a single batch are compressed with the same quality setting; run separate batches for different settings.
What do I get when it’s done?
A single zip file containing every compressed image.
Is there a free bulk image compressor online?
Yes — this tool is completely free, with no account, watermark, or upload limit.
Is Bulk Image Compressor free?
Yes, and there is no sign-up, watermark or daily limit — everything runs in your browser rather than on a metered server.