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PNG to JPG Converter

Converting PNG to JPG dramatically reduces file size by switching from lossless to lossy compression — often shrinking images by 60-80% with minimal visible quality loss. This makes JPG the better choice for photographs, web images, email attachments, and any scenario where file size matters more than pixel-perfect accuracy. SublimePDF gives you full control over the JPEG quality slider so you can find the ideal balance between compression and visual fidelity. Transparent areas in your PNG are composited onto a configurable background color since JPEG doesn't support transparency.

Convert PNG to JPG instantly in your browser — no file uploads, no registration, and completely free.

Drop your PNG files here

or click to browse — up to 50MB

How to Convert PNG to JPG Online

Upload your PNG image

Drag and drop your .png file into the converter. Images with transparency will be flattened onto a background color of your choice (white by default).

Set JPEG quality and background color

Adjust the quality slider (1-100) to control the compression-to-quality tradeoff. Choose a background color for transparent areas. Preview the JPEG output and compare file sizes side-by-side before downloading.

Download your JPG image

Your compressed .jpg file is ready instantly. Compare the before/after file sizes to see the space savings — typically 60-80% reduction from the original PNG.

PNG to JPG Converter Features

Adjustable JPEG quality slider from 1 (smallest file) to 100 (best quality)

Real-time preview with side-by-side original vs. output file size comparison

Configurable background color for transparent PNG areas (white default)

Preserves EXIF metadata and color profiles during conversion

Significant file size reduction — typically 60-80% smaller than the source PNG

Batch conversion for processing multiple PNGs at once

100% free — no registration required

Files processed in your browser (never uploaded)

When to Convert PNG to JPG

Compress PNG photographs for faster website loading and better Core Web Vitals scores
Reduce image file sizes for email attachments that exceed mailbox size limits
Convert PNG screenshots to JPG for smaller file sizes in presentations, reports, and documentation
Prepare PNG images for social media platforms that prefer or auto-convert to JPEG format
Batch convert a library of PNG photos to JPG to reclaim storage space on devices and cloud drives

About PNG and JPG

What is PNG?

Portable Network Graphics (.png) — A lossless image format that supports transparency, ideal for graphics, logos, and screenshots. Learn more about PNG →

What is JPG?

JPEG Image (.jpg, .jpeg) — The most common image format, great for photographs and complex images with smooth color gradients. Learn more about JPG →

Privacy & Security

Your files never leave your device. All conversion happens locally in your browser using WebAssembly technology.

PNG to JPG Conversion FAQ

How much smaller will the JPG file be?

Typically 60-80% smaller at quality 85, which is visually nearly identical to the original. At quality 70, files are even smaller with only minor differences visible in detailed areas. The preview lets you judge before downloading.

What happens to transparent areas in my PNG?

JPEG does not support transparency, so transparent areas are composited onto a solid background color. White is the default, but you can choose any color — black, a brand color, or whatever suits your use case.

What quality setting should I use?

Quality 85-90 is ideal for most uses — visually indistinguishable from the original with major size savings. Quality 70-80 works well for web thumbnails and social media. Below 60, compression artifacts in gradients and edges become noticeable.

Will the image dimensions change?

No. The pixel dimensions (width and height) remain exactly the same. Only the compression method and resulting file size change during conversion.

Can I preview the output before downloading?

Yes. The converter shows a real-time preview of the JPEG output alongside the original PNG, with a file size comparison so you can fine-tune the quality slider to your preference.

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