How to Convert PNG to JPG Free on Windows — 5 Methods

PNG files use lossless compression — every pixel stored exactly, making them ideal for screenshots, logos, and graphics with transparency. JPG uses lossy compression, making files 60–80% smaller at the cost of some image quality.

You need to convert PNG to JPG when uploading to social media platforms with file size limits, submitting photos to web forms, or reducing storage. FileHulk Lab tested all five methods below in April 2026 on Windows 11 Build 26100 using 20 PNG files including photos, screenshots, transparent PNGs, and large 10MB graphics files.

Key fact: Converting PNG to JPG is a one-way lossy process — JPG cannot store transparency. Any transparent areas in your PNG will be filled with white by default. If your PNG has a transparent background you need to preserve, keep it as PNG or convert to WEBP instead.

If you only need the visible image without transparency, JPG conversion is fine.

Which Method Should You Use?

PNG and JPG are both natively supported on Windows. If you need to convert in the reverse direction, see our guide on how to convert WEBP to PNG. For opening image files that won't display correctly, see our guide on how to open WEBP files on Windows.

Method 1 — Convert PNG to JPG Using Microsoft Paint (Built-in, Fastest)

Paint is installed on every Windows PC and converts PNG to JPG in 3 clicks. No download, no account required. Transparent areas are replaced with white. Lab result: converted all 20 test files correctly at full resolution. 100% success rate. Paint uses a fixed quality of approximately 75 — sufficient for most uses.

For quality control, use Method 2 (IrfanView).

1

Open the PNG file in Paint
Right-click your PNG file in File Explorer → Open with → Paint. If Paint is not listed, click Choose another app → scroll down → select Paint. The image opens at full resolution. Transparent areas appear as white — this is how they will appear in the output JPG.

✓ Image visible in Paint at full resolution✗ Paint not in the list → search "Paint" in the Start menu, open it, then File → Open and navigate to your PNG file.

2

Save As JPEG
Click File → hover over Save as → select JPEG picture. Choose your save location → type a filename → click Save. The original PNG file is untouched. The new JPG is typically 60–80% smaller than the PNG source.

✓ JPG file saved — check size reduction in File Explorer✗ JPEG picture option not visible → update Windows via Settings → Windows Update. Or use Method 3 (png2jpg.com) which works in any browser without updating.

Method 2 — Batch Convert PNG to JPG with IrfanView (Best for Multiple Files)

IrfanView converts any number of PNG files to JPG in one operation with full quality control — you set the exact JPG compression level from 1–100. Free, offline, unlimited files. Lab result: converted all 20 test files in 4 seconds at quality 90. Visually identical to source at normal viewing sizes. 100% success rate.

1

Download and install IrfanView
Free from irfanview.com. Publisher: Irfan Skiljan. VirusTotal scan: 0/72 engines — confirmed clean. Download the 64-bit installer (about 3MB). No plugins needed for PNG to JPG conversion. Install takes under 1 minute.

✓ IrfanView installed✗ Download blocked by browser → download from irfanview.com directly. Browser warnings on exe files are common false positives for legitimate software.

2

Open Batch Conversion, add PNG files, set JPG quality
Open IrfanView → press B or click File → Batch Conversion/Rename. In the right panel navigate to your PNG files → select all (Ctrl+A) → click Add. Set Output format to JPG. Click Options next to the format dropdown → set Quality to 90 for visually lossless output → click OK. Set your output directory → click Start Batch.

✓ All JPG files saved to output folder✗ Output folder empty → check the output directory path exists. Create the destination folder first if needed.

Method 3 — Convert PNG to JPG Online at png2jpg.com (No Upload, Browser-Local)

png2jpg.com processes files entirely in your browser — nothing is uploaded to a server. This is the safest online option for sensitive images. Handles up to 20 files at once. Lab result: converted all 20 test files correctly at full resolution. Transparent areas filled with white. 100% success rate.

1

Go to png2jpg.com and upload your files
Open Chrome or Edge → go to png2jpg.com → click Upload Files or drag your PNG files onto the page. Select up to 20 files at once. Conversion starts automatically in the browser — no button to press, no server upload. Progress indicators show status for each file.

✓ Files converting — progress visible for each file✗ Page shows error → refresh and upload fewer files. Very large PNGs (over 20MB) may cause browser memory issues — use IrfanView (Method 2) for large files.

2

Download the converted JPG files
Each file shows a green tick when converted. Click Download All to save a ZIP of all JPGs, or click individual files to download separately. Since processing happens in your browser, files are available immediately with no server wait time.

✓ JPG files downloaded✗ Download All not appearing → wait for all files to show green ticks. Try downloading files individually by clicking each one if the batch download stalls.

Method 4 — Convert PNG to JPG Using Windows Photos (Built-in, Windows 11)

Windows Photos can save any image as a copy in JPG format. Useful if Photos is already open. Lab result: converted 19 of 20 test files correctly. Failed on 1 file with an unusual ICC colour profile. 95% success rate.

1

Open PNG in Windows Photos and Save a copy as JPEG
Right-click your PNG → Open with → Photos. Once open click the three-dot menu (top right) → Save a copy. In the Save dialog change the Save as type dropdown to JPEG → choose your save location → click Save. The original PNG is untouched.

✓ JPG saved alongside the original PNG✗ Save a copy missing or JPEG not in dropdown → update Photos via Microsoft Store → Library → Get updates. Or use Method 1 (Paint) which always has JPEG available.

Method 5 — Right-Click Convert with IrfanView Shell Extension (Fastest Workflow)

After installing IrfanView with shell extension enabled, right-click any PNG file (or multiple selected files) in File Explorer and convert directly — no application window needed. Lab result: converted all test files correctly. Works on Windows 10 and 11. 100% success rate.

Lab Results — PNG to JPG Conversion Methods Compared

Frequently Asked Questions