JPG to PNG Converter

Convert JPG images to lossless PNG format quickly and easily. All processing stays in your browser.

Lossless conversion
No watermark
Client-side only
Batch processing

Multi-file conversion results are automatically packaged into a ZIP archive, so you download everything in one click rather than downloading each file individually.

Supported formats: JPG, JPEG

Limits: up to 120 MB per file. Up to 120 MB per file. Converts instantly in your browser.

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Drop JPG images here

Drag and drop here or click to browse

Image Encoder Specifications

Input FormatJPG / JPEG
Output FormatPNG (Lossless)
CompressionDeflate / Lossless PNG
Max File Limit120 MB per file
Color Depth24-bit TrueColor
Batch ModeSupported

Privacy & Processing Environment

Encoder EngineHTML5 Canvas API
Execution Sandbox100% Client Browser
Server UploadsNone (Zero Bytes)
Watermark StatusNone Added

JPG to PNG Performance Metrics

HTML5 Canvas PNG Encoding

Instant

Losslessly converts compressed JPG image data into PNG chunks entirely within local memory.

under 5 secs

Multi-Pass Preservation

Lossless

Prevents further generational quality degradation on subsequent image saves.

100% Preserved

How to convert JPG to PNG

  1. Upload one or more JPG or JPEG files by clicking the upload area or dragging them onto the page.
  2. Click Convert to PNG to instantly encode your images into PNG format.
  3. Preview the resulting PNG files and download them to your device.

Standard lossless conversion

Convert any JPG to PNG format without any modification to the image content. The output is a lossless PNG at the same dimensions and color values as the source JPG.

100% Private

All image conversion happens locally inside your web browser. No files are uploaded to external servers.

JPG versus PNG: lossless formats and image conversion

JPG and PNG are both widely used image formats, but they were designed for different types of images and different priorities. JPG was created to store photographic images as compactly as possible. It achieves small file sizes by analyzing the image and discarding color information that the human visual system is unlikely to notice. This is known as lossy compression. The trade-off is that every time you save a JPG, a small amount of quality is permanently lost.

PNG was created specifically as a lossless alternative. Every pixel is stored exactly, with no quality degradation during compression or decompression. This makes PNG ideal for images that need to remain pixel-perfect through multiple rounds of editing, such as screenshots, user interface graphics, diagrams, and illustrations. If you only need to change the filename of a JPG or PNG image without changing file formats or altering pixels, try our Rename Images Online tool.

Your images never leave your device

All JPG to PNG conversion processing happens entirely inside your browser. The tool uses the HTML5 Canvas API and runs on your local device without sending any image data to a server. Your files are never uploaded, stored, or transmitted over the internet.

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Looking for something else? You can see all PDF and image tools on the PDF and image tools hub.

JPG to PNG converter: frequently asked questions

Will converting JPG to PNG improve image quality?
Converting a JPG to PNG will not recover any quality that was lost when the original JPG was compressed. The compression artifacts present in the JPG will be preserved exactly in the PNG output. However, saving as PNG prevents any additional quality loss from future saves, since PNG is a lossless format. This is useful when you need to edit an image multiple times without degrading it further.
Is there a file size limit?
The tool accepts JPG files up to 120 MB each. Processing happens entirely in your browser, so very large images may take a moment depending on your device's processing power. No files are ever uploaded to a server.
Can I convert multiple JPG files at once?
Yes, you can upload multiple JPG files and convert them all in one pass. All files are processed into lossless PNG images and can be downloaded individually.
Does the tool store or transmit my images?
No. All conversion processing happens locally in your browser. Your image files never leave your device and are never uploaded to any server. The tool can be used offline once the page has loaded.
How do I remove passwords from PDF files on MacroToolkit?
If you have encrypted PDF documents that need unlocking, use our PDF Password Remover to decrypt them privately in your browser before converting or sharing.