Bulk Image Converter
Converts a whole batch of images to a new format in one pass, returning a zip file.
What Does Bulk Image Converter Do?
Converts a whole batch of images to a new format in one pass, returning a zip file. Converting product photos to a new format one at a time adds up fast across a large catalog. This tool converts a whole batch of images to your chosen format 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 Convert Images Online in 3 Steps
Upload your photos
Drop as many images as you like — they all get the same treatment.
Choose a target format
JPG, PNG, or WebP.
Download the zip
All converted images come back together in one zip file.
Key features
- Convert dozens of images in one pass
- JPG, PNG, or WebP output
- Returns a single zip file
Practical use cases
- A catalog of PNG product photos needs to become JPGs to reduce file size before a bulk upload.
- A whole folder of photos needs to be converted to WebP for a faster-loading website.
- Someone received a batch of images in a mixed set of formats and needs them all standardized to one format.
Frequently asked questions
Can I mix different source formats in one batch?
Yes — upload a mix of JPG, PNG, WebP, or other supported formats, and they’ll all convert to the same target format.
What if two files end up with the same name?
The tool automatically numbers duplicate filenames so nothing gets overwritten in the zip.
What do I get when it’s done?
A single zip file containing every converted image.
Is there a free bulk image converter online?
Yes — this tool is completely free, with no account, watermark, or upload limit.
Is Bulk Image Converter free?
Yes, and there is no sign-up, watermark or daily limit — everything runs in your browser rather than on a metered server.