Batch Convert PNG to JPG

Batch convert PNG images to JPG for smaller files or JPG-only upload forms · completely free · 100% local processing, nothing uploaded

Image Processing

Check to enable a feature — multiple selection supported

Compress

Compression modeQuality (0.05–0.98)Target KB

Rotate & Flip

Rotate

Flip horizontal (mirror)Flip vertical (upside down)

Crop & Resize

Crop ratioCustom ratio (width:height):

Drag the crop box on the preview to adjust — drag a corner to resize

Target width (px)

Convert Format

Output format

AVIF encoding is noticeably slower than JPEG/WebP — large images or batches may take several seconds to tens of seconds each, please be patient

With PDF selected, exporting skips the ZIP-packaging step and produces a single PDF with each image as its own page

Rename

Naming template (placeholders: {name} original filename · {n} sequence number)

Clear Privacy Data

Add Watermark

One-click styles

Pick one for an instant result — fine-tune the details below anytime

Add manually

Watermark templates

Backup & transfer (optional)

Clearing browser data, switching devices, or switching browsers loses the templates saved above — export a file to keep your own backup, then import it back whenever you need it

Preview

Click to select a layer · drag to move · scroll to zoom · Shift+scroll to rotate

🔒 Everything is processed locally on your device — your images are never uploaded or stored on a server

Multiple selection supported; EXIF orientation is auto-corrected on import · supports common image formats

+ Add more images

No layer selected

OpacityScaleRotation (°)Blend modeMosaic block size

Quick position (highlighted = current position):

Click to choose filesMultiple selection supportedClick to choose a folderBatch import an entire folder

Batch Process & Export

✓ Output files are never watermarked or branded by us — crop/compress/convert/watermark all run in one pass

View technical details

Why convert PNG to JPG?

Two common reasons: an upload form that flat-out rejects PNG and only accepts JPG/JPEG, or wanting a smaller file — PNG is lossless and tends to run noticeably larger than JPG for the same photo content, especially for screenshots and photos with lots of detail.

What happens to transparency when converting to JPG?

It's lost — JPG doesn't support transparency at all, so any transparent areas in the source PNG get filled with a solid color (typically white) during conversion. If you need to keep transparency, stay with PNG or use WebP instead.

Does converting from PNG to JPG lose quality?

Yes, some — PNG is lossless and JPG is a lossy format, so converting introduces the same kind of compression artifacts as saving any photo as JPG. For ordinary photos this is barely noticeable at a reasonably high JPG quality setting; for flat-color graphics like screenshots or diagrams, the effect can be more visible around sharp edges.