Batch Image Converter
Process a whole folder of images in one go: change the format, cap the width and height, rename them with a pattern, and download everything as a single ZIP.
- No upload: runs in your browser
- Free, no account, no watermark
- Convert + resize + rename
- Progress for large batches
- One ZIP download
Format
Resize optional
Larger images shrink to fit, keeping proportions. Smaller ones are not enlarged.
Rename optional
Example: product → product-001.webp, product-002.webp
Runs entirely in your browser. Your files are never uploaded to SBGeeks or anyone else. Privacy policy
How to use the Batch Image Converter
- Drop all the images on the box, or choose them. You can add more afterwards.
- Choose the output format and quality, and optionally a maximum width and height.
- Set a file name pattern if you want consistent names, such as product-001.webp.
- Click Convert all, watch the progress, then download the ZIP.
What is a batch image converter?
Runs entirely in your browser. Your files are never uploaded to SBGeeks or anyone else.
Free to use, with no sign-up, no limits on the number of files and no watermark added.
Built and maintained by SBGeeks, a digital marketing agency. Questions or problems? Contact us.
How it works
Images are processed one at a time, which keeps memory use low even for hundreds of files. Each is decoded, resized to fit within your maximum width and height if it is larger (images are never enlarged), and saved in the chosen format.
The ZIP file is built in your browser. Files inside it are stored without extra compression, because images are already compressed and zipping them again would only make the process slower. If two files would end up with the same name, a number is added so nothing is overwritten.
Useful for
- Preparing an online shop’s product photos in one format and size
- Converting a folder of PNG screenshots to WebP
- Renaming camera files to descriptive, numbered names
- Shrinking event photos before sharing them
Limitations
- Very large batches depend on your device’s memory and speed; a phone handles fewer at once than a laptop.
- Animated images become single frames.
- File names are made safe for every operating system, so some characters are replaced with hyphens.
Questions
How many images can I convert at once?
Will the images be enlarged to the maximum size?
How does the rename pattern work?
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