What JPEG quality is used?
Quality defaults to 85 and ranges from 1 through 100. The selected value is captured when files are added.
Batch JPEG encoding
WebP to JPG Converter
Re-encode WebP images as adjustable-quality JPG files with transparent areas filled white.
Last updated: August 2026
Batch
WebP files
85
Default quality
1–100
Quality range
Private
No uploads
85
Smaller fileBetter quality
JPEG uses lossy compression. Quality 85 is the recommended default. Transparent areas in the WebP will be filled with white in the JPEG output as JPEG does not support transparency.
Drop WebP files here or click to browse
All processing stays in your browser. Nothing is uploaded.
How to convert WebP to JPG
01
Set JPEG quality
Choose a value from 1 to 100 before adding files; the default is 85.
02
Add WebP files
Select one or more WebP images. Each accepted file starts converting immediately.
03
Review each JPG
Check its output size and remember that transparent areas become white.
04
Download the results
Save files individually or bundle multiple completed JPGs in a ZIP.
What the converter actually does
Decode then encode
WebP is decoded to RGBA pixels before MozJPEG encoding.
Quality 1–100
The default is 85 and is captured when files are added.
White background
Transparent source pixels are flattened onto white.
Batch workflow
Every accepted WebP becomes its own JPG result.
Real size comparison
The file list shows whether each JPG is smaller or larger.
New still files
Animation and source metadata are not retained.
Common WebP-to-JPG mistakes
Expecting transparency
Use PNG when the alpha channel must remain.
Changing quality after adding files
Existing conversions are not restarted.
Calling the JPG lossless
JPEG discards information at every quality setting.
Assuming the size direction
Compare the result instead of assuming JPG is larger or smaller.
Expecting animation
The output is a still image.
Adding too many large files
Batch WebAssembly work can exhaust browser memory.
Why use ImgTweak?
✓Batch WebP input
✓JPEG quality from 1 to 100
✓Predictable white background
✓Per-file size comparison
✓Individual or ZIP download
✓No uploads or account required
Frequently asked questions
Does changing quality re-encode results?
No. Running and completed files keep the quality selected when their conversion began.
What happens to WebP transparency?
JPEG has no alpha channel. The converter fills transparent areas with white before producing the JPG.
Will the JPG always be larger?
No. The result depends on both encodings and the chosen quality. The file list reports the actual size change.
Is the conversion lossless?
No. WebP is decoded to RGBA pixels and MozJPEG applies lossy compression at the selected quality.
Can animated WebP be preserved?
No. The decoder produces still ImageData, and the result is a still JPG.
Can I batch convert files?
Yes. Convert multiple files, download them individually, or download multiple completed results as webp-to-jpg.zip.
Are files uploaded or metadata retained?
Files stay in your browser. Source metadata does not enter the decoded-pixel pipeline and is not copied.
Ready to convert your WebP files?
Set JPEG quality first, add files above and compare each completed result.