TeraConvert

Convert PNG to JPG on your Mac

Convert PNG to JPG on your Mac without uploading anything. This tab does the work; the desktop app runs a whole folder in one go.

100% local. Your file is processed in this tab and never uploaded.

How to Convert PNG to JPG on a Mac

  1. 1

    Drop your PNG file

    Drag it into the converter above, or click to browse. Nothing is uploaded.

  2. 2

    Adjust settings (optional)

    Crop, resize, rotate, or set quality from the sliders icon.

  3. 3

    Convert and download

    JPG is preselected. The file converts in this tab and downloads when done.

Why Convert PNG to JPG?

PNG files are significantly larger than equivalent JPG files for photographic content because lossless compression cannot match the efficiency of perceptual compression on natural images.

Converting to JPG reduces file size by 60-80% with negligible quality loss for photos, making pages load faster and storage costs drop.

PNG
JPG
Compression
Lossless
Compression
Lossy
Transparency
Yes (alpha channel)
Transparency
No
Max colors
16.7 million + alpha
Max colors
16.7 million
Animation
No (APNG rare)
Animation
No
Browser support
Universal
Browser support
Universal
Typical use
Graphics, screenshots
Typical use
Photography

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Frequently Asked Questions

How do I convert PNG to JPG on a Mac?
Drop the file into the converter above, pick JPG, then hit Convert. Your Mac does the whole job inside this tab, so the file is never uploaded and the page keeps working with the Wi-Fi off. The desktop app adds folder-at-a-time batches and drops the browser size caps.
How much smaller will my JPG be?
For photographic content, JPG files are typically 60-80% smaller than PNG at equivalent visual quality. For graphics with flat colors or text, the savings are smaller and quality loss is more noticeable.
Will my PNG's transparent areas be preserved?
No. JPG does not support transparency. Transparent areas in your PNG will be filled with a solid background color, typically white.
What quality level should I choose?
Quality 80-90 is the standard sweet spot: files are 3-5x smaller than PNG with no visible degradation for most photos. Quality below 60 introduces noticeable artifacts on text and sharp edges.
Is this conversion reversible?
No. Once converted to JPG, the discarded data cannot be recovered. Always keep your original PNG if you may need it again.
Is my file private?
Yes. The conversion runs in your browser tab and nothing is uploaded, so your files never leave your device. The only limit is size: 25 MB for this format. Bigger files route to the desktop app.

Compressing a full website image library?

TeraConvert Desktop converts a whole batch of PNG files to JPG in one go, with no file count limit.

Get TeraConvert for MacThis format runs in the Mac app. One-time Pro purchase, 14-day money-back guarantee.