Standardize a folder-sized selection of mixed JPEG photographs and transparent PNG graphics as WebP through one queue, one quality setting, and one local ZIP download.
How to use Bulk Images to WebP
- Select or drop up to 30 JPG, JPEG, and PNG files together.
- Choose the shared WebP quality for this batch.
- Convert locally, review each size result, and download files individually or as a ZIP.
What this tool is good at
When to use Bulk Images to WebP
Mixed asset folders
Convert JPG, JPEG, and PNG inputs together instead of separating them into format-specific queues.
Website migrations
Prepare a consistent WebP delivery set when an older project contains several raster source formats.
Local client batches
Process up to 30 images without creating a remote job or exposing the entire collection to a third party.
How to choose the right settings
Use one quality policy
The selected quality is applied across the batch, so group images with similar visual requirements when possible.
Check transparent PNG results
Alpha is retained, but sharp interface art may need a higher quality than photographs in the same queue.
Download the ZIP after review
Individual results remain available, while the ZIP is built locally only when requested.
Practical workflow and output details
Every file is signature-checked and processed independently in the browser. One unsupported or damaged image produces a clear failure rather than an unexplained server-side job status.
The shared output format is WebP, but source-specific metadata is removed. Original files remain unchanged and should be kept until the whole batch is reviewed.
Format behavior and limitations
Every file is signature-checked; renamed or unsupported inputs are rejected before the batch begins.
Outputs use lossy WebP encoding and do not retain EXIF, XMP, or embedded ICC data.
Frequently asked questions
Can JPG and PNG files be mixed?
Yes. One queue can contain valid JPEG and PNG files, and each receives the same selected WebP quality.
How are PNG transparent areas handled?
Transparent PNG pixels remain transparent in WebP; JPEG files have no source transparency.
Why is the batch capped at 30 files?
Decoded images consume much more memory than compressed files. The cap protects the browser tab from oversized workloads.
Related WebP tools
Bulk WebP Converter
Convert up to 30 static WebP files to PNG or JPG using one consistent batch policy.
JPG to WebP
Convert JPG and JPEG images to compact WebP files privately in your browser.
PNG to WebP
Convert transparent PNG images to WebP locally with adjustable quality and batch support.