How do I batch convert JPG to PNG for free?

Upload multiple JPG files to our converter at once. Select all the files you want to convert, and download each PNG. No signup, no limit on number of files, no watermark. For very large batches (500+ files), desktop tools like IrfanView or ImageMagick are faster.

Is there a limit on how many files I can convert?

Our browser tool has no hard limit — convert as many as your browser can handle (typically 50-100 files comfortably). For larger batches, process in groups of 50. Desktop tools like IrfanView (Windows, free) or ImageMagick (command line, free) handle unlimited batch sizes.

Will batch conversion affect quality?

No. Each JPG is converted to PNG individually with no quality loss. Batch processing uses the same conversion engine as single-file conversion. The PNG output preserves all quality from the original JPG.

Can I batch convert on my phone?

Yes — open our converter in your mobile browser. Select multiple files from your photo library. The conversion runs in your browser on any device. For iPhone: use the Files app to select multiple images. For Android: use the file picker to select multiple.

How long does batch conversion take?

In-browser: 1-2 seconds per image. 50 images take about 30-60 seconds. The conversion runs locally on your device, so speed depends on your device performance. Desktop tools: near-instant for batch conversion since they use native code.

Can I batch convert and resize at the same time?

Our converter handles format conversion. For batch resize + convert, process in two steps: batch resize with our image resizer, then batch convert with our converter. Or use IrfanView (Windows) which can batch resize and convert in one operation.

Batch Convert JPG to PNG Free — Convert Multiple Images at Once

Last updated: April 20265 min readImage Tools

Convert multiple JPG images to PNG at once — free, no signup, no file limit. Upload a batch, convert all, download individually. Works in your browser on any device.

Batch convert your JPGs to PNG — upload multiple files.

Open Batch Converter

Batch Conversion Methods

Method	Max Files	Speed	Free?	Platform
Browser tool (ours)	~50-100 comfortably	1-2 sec/image	✓ Free	Any device
IrfanView	Unlimited	Instant	✓ Free	Windows
Preview (Mac)	Unlimited	Fast	✓ Free	Mac only
ImageMagick	Unlimited	Instant	✓ Free (command line)	Mac/Win/Linux
Convertio	~10 free/day	Fast	~Free tier limited	Any device
XnConvert	Unlimited	Fast	✓ Free	Mac/Win/Linux

Method 1: Browser Tool (Any Device)

Open JPG to PNG Converter
Upload multiple JPG files (drag and drop or select all)
Each file converts instantly
Download each PNG individually

Best for: 5-50 files, any device, no software install needed.

Method 2: IrfanView (Windows — Best for Large Batches)

Open IrfanView (free download from irfanview.com)
File > Batch Conversion/Rename
Add all your JPG files
Set output format to PNG
Choose output folder and click Start Batch

Best for: 100+ files on Windows. Processes thousands of files in seconds.

Method 3: Mac Preview

Select all JPG files in Finder
Right-click > Open with Preview
In Preview: Edit > Select All (to select all images in sidebar)
File > Export Selected Images
Choose PNG format, select output folder

Method 4: Command Line (Power Users)

ImageMagick one-liner — converts every JPG in a folder to PNG:

for f in *.jpg; do convert "$f" "${f%.jpg}.png"; done

Install: brew install imagemagick (Mac) or apt install imagemagick (Linux) or download from imagemagick.org (Windows).

File Size Impact

Original JPG Size	Converted PNG Size	Increase
100KB	300-600KB	3-6x
500KB	1.5-3MB	3-6x
1MB	3-6MB	3-6x
5MB	15-30MB	3-6x

PNG files are larger because they use lossless compression. If storage space is a concern and you do not need transparency, keep your images as JPG. If you need PNG for transparency or editing, the size increase is the tradeoff.

Batch convert JPGs to PNG — free, no limits.

Start Converting

Batch Convert JPG to PNG Free — Convert Multiple Images at Once

Batch Conversion Methods

Method 1: Browser Tool (Any Device)

Method 2: IrfanView (Windows — Best for Large Batches)

Method 3: Mac Preview

Method 4: Command Line (Power Users)

File Size Impact

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