How do I convert PNG to JPEG?

Run "npx optimo image.png --format jpeg" in your terminal. Optimo handles the format conversion and applies optimization in a single step.

Why convert PNG to JPEG?

JPEG is often far smaller for photographs and complex gradients. Useful when transparency is not needed.

Does converting PNG to JPEG lose quality?

Optimo uses sensible defaults that balance file size and quality. For lossless conversion (where possible), omit the --lossy flag. Add --dry-run to preview the result before committing.

Convert PNG to JPEG

A practical, local workflow for converting PNG to JPEG with optimo.

Last updated: 2026-03-18

To convert PNG to JPEG, run npx optimo image.png --format jpeg. JPEG is often far smaller for photographs and complex gradients. Optimo handles format conversion and optimization in a single step.

Command

Convert a file by targeting the output format:

npx optimo image.png --format jpeg

Tip: add --dry-run to preview changes.

Why convert?

JPEG is often far smaller for photographs and complex gradients.
Useful when transparency is not needed.

Format notes

PNG

Lossless image format with sharp edges and great support for transparency.

Optimize PNG Compress PNG Resize PNG PNG guide

JPEG

The classic photo format: widely supported, good quality-to-size for photographs.

Optimize JPEG Compress JPEG Resize JPEG JPEG guide

Not sure which to use?

If you're choosing a delivery format, here's a quick comparison.

PNG vs JPEG

More to JPEG

HEIC → JPEG WebP → JPEG AVIF → JPEG JPEG XL → JPEG GIF → JPEG SVG → JPEG

Frequently asked questions

How do I convert PNG to JPEG?: Run "npx optimo image.png --format jpeg" in your terminal. Optimo handles the format conversion and applies optimization in a single step.
Why convert PNG to JPEG?: JPEG is often far smaller for photographs and complex gradients. Useful when transparency is not needed.
Does converting PNG to JPEG lose quality?: Optimo uses sensible defaults that balance file size and quality. For lossless conversion (where possible), omit the --lossy flag. Add --dry-run to preview the result before committing.