Batch convert image formats and sizes, rename files, and compress images in bulk
The tool supports PNG, JPEG, and WebP for both input and output, so you can convert between them in batches. Use PNG or WebP when you need transparency; JPEG does not preserve transparent areas. HEIC, RAW, and similar formats are not supported.
There is no fixed file-count limit, but each image must be 10MB or smaller, and the practical batch size depends on browser memory and image dimensions. For large jobs, process images in smaller batches.
Enter a target width in the Target size fields and leave height blank with Keep aspect ratio checked. The tool calculates height from each image's original proportions. You can also enter both width and height; the setting applies to the whole batch.
Add a shared suffix such as _small or _thumb in File suffix. The suffix is appended to each output filename; leave it empty to keep the original names. Per-image custom names are not supported.
Compression re-encodes images, so there is a trade-off between file size and quality. Results depend on the image, output format, and the compression setting. Test a few files first; use PNG when quality matters.
No. Conversion, resizing, renaming, and compression run locally in your browser. Images are not uploaded; the current file list is cleared when you close or refresh the page.