01
Add JPEG files
Drop a single JPEG or a batch of files into the converter. Files are identified from raw byte signatures, not file extensions.
JPEG to PNG Converter
Convert JPEG to PNG online for free. Convert JPEG to lossless PNG. Fast, 100% private, and processed directly in your browser with zero server uploads.
Convertto
Drop JPEG images here, or click to choose files
Processed locally in your browser · Zero server uploads
ReadsPNG, JPG, WebP, GIF, BMP, SVG, AVIF, ICO, HEIC, TIFF, JPEG XL
WritesJPG, PNG, WebP, AVIF, JPEG XL, GIF, BMP, TIFF, ICO, PDF
Rate this tool
(0 ratings)
In-Browser Conversion
What is JPEG to PNG Converter?
Converting JPG to PNG wraps your image into a lossless format ideal for graphic design, subsequent image edits, and archival storage where you need to prevent further lossy compression artifacts.
Universal In-Browser Image ConversionJPEG to PNG Processing
Client-side conversion workflow: Drag and drop JPEG files, customize settings, and convert to PNG in local browser memory.
Technical Architecture100% In-Browser Memory Pipeline
Input Format.jpeg
JPEG
Decoded directly via browser hardware-accelerated image pipeline.
Engine: Browser NativeZero upload
Local MemoryWASM / RAM
Uncompressed Pixels
Decoded into raw RGBA buffer inside your browser tab memory. No cloud roundtrips or server queues.
RAM Security100% Private
Target Format.png
PNG
Lossless with full transparency — logos, screenshots, line art.
Engine: Browser NativeDirect export
End-to-end local architecture: Files are processed strictly within your device's memory and never leave your computer or phone.
How to convert JPEG to PNG
Convert your files in three simple steps directly in your browser:
02
Convert to PNG
The browser decodes the source locally, then writes PNG at original pixel dimensions in browser memory.
03
Download PNG
Save individual converted PNG files, or download the entire batch as a single ZIP archive.
Key Advantages
Why Convert JPEG to PNG Locally?
Experience fast, secure, and lossless conversion with our privacy-first browser architecture.
Privacy & SecurityZero Uploads
100% Private In-Browser Processing
Your JPEG photos are decoded and encoded directly inside your browser tab memory. No files are ever sent to remote cloud servers, keeping your personal photos and sensitive documents completely secure.
Zero network transmission - Complete local security
Fidelity & EngineOptimized PNG
Pixel-Perfect Visual Quality
PNG is lossless, so every pixel and the full alpha channel survive the conversion. PNG is one of the three formats browsers can encode themselves, so nothing extra is downloaded and conversion is near-instant.
Original dimensions preserved - No watermarks
ArchitectureWASM Pipeline
How the Conversion Pipeline Works
The conversion executes in two discrete steps inside this browser tab: first, the JPEG source is decoded into uncompressed raw pixels in memory. Second, those raw pixels are re-encoded into valid PNG format without quality degradation.
SpecificationsStandards
Format & Privacy Guarantees
- •Dimensions: Exact pixel resolution is retained.
- •Transparency: Alpha transparency is preserved.
- •Metadata: EXIF & GPS location tags are stripped for complete privacy.
Full compliance with web standard image codecs
Continue with another image tool
After checking an image, choose a tool for the change you need. Each tool has a different purpose.
Compress Images to KB or MB
Reduce file size to fit a KB or MB limit. Compression may also reduce pixel dimensions to reach your target.
Explore tool
Image Resizer and Social Media Sizes
Change pixel width and height for a website, print layout or social media preset. Enlarging an image does not restore missing detail.
Explore tool
Metadata Remover
Need to strip or edit EXIF before sharing? Open Metadata Remover to remove GPS, camera data and other hidden fields.
Explore tool
Image Size Finder
Check pixel width, height, megapixels and aspect ratio instantly for one image or a full batch.
Explore tool
Related Image Converters
Explore more image conversion options for JPEG, PNG, and other popular web formats.
More JPEG Converters
Convert your JPEG files into other popular image formats:
Convert to PNG
Convert other image formats into optimized PNG:
JPEG to PNG FAQ
How do I convert JPEG to PNG?
Drop your JPEG file into the tool above, then download the PNG. Everything runs in your browser - your image is never uploaded to a server.
Is converting JPEG to PNG free?
Yes. There is no signup, no watermark and no limit on the number of files.
Will I lose quality converting JPEG to PNG?
PNG is lossless, so every pixel and the full alpha channel survive the conversion.
What is the difference between JPEG and PNG?
Convert JPEG to lossless PNG. Lossless with full transparency — logos, screenshots, line art.
Does converting JPEG to PNG need a plugin or an install?
No. PNG is one of the three formats browsers can encode themselves, so nothing extra is downloaded and conversion is near-instant.
Is transparency kept in the PNG?
Yes. If the JPEG has an alpha channel it carries through to the PNG.
Is EXIF and GPS data kept in the PNG?
No. Conversion goes through raw pixels, so EXIF, GPS coordinates, IPTC and XMP are all dropped. That is usually what you want before sharing a photo - but if you need to keep the format and only remove metadata, use the Metadata Remover instead.
Free & Private In-Browser Tool
Convert JPEG to PNG Online Now
Fast, 100% private, and completely free in-browser converter. Drop your JPEG files and download optimized PNG in seconds.