JPG to PNG Converter: Convert JPEG to PNG Lossless Online
JPG to PNG converter online: convert JPEG images to PNG with lossless quality and batch conversion for design and archiving.
Updated 2026-08-26
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Features
- Convert JPG/JPEG images to PNG format with lossless quality
- Preserves color accuracy: no re-encoding, colors stay identical to the original JPG
- Batch convert multiple JPG files at once with ZIP save
- Paste from clipboard (Ctrl+V) for instant conversion
- Real-time preview: see the result as you make adjustments
- Adjustable quality for PNG output: lossless encoding with optimization options
- Accepts HEIC, WebP, GIF, and more as input: convert other formats to PNG too
- Local processing: conversion runs entirely on your device
How to Use
- 1Open JPG images by clicking, dragging, or pasting from clipboard.
- 2PNG is selected as the output format automatically.
- 3Images convert instantly; review results in the list.
- 4Save individual PNG files or batch save as ZIP.
- 5How to convert a single JPG image to PNG: open the JPG file by clicking the drop area or dragging it in, PNG is automatically selected as the output format, then click Save to save the lossless PNG version.
- 6How to batch convert multiple JPG images to PNG: drag and drop several JPG files at once, they all appear in the list. Review each conversion result, then click Save All to receive a ZIP archive containing all PNG files.
- 7How to convert JPG to PNG with transparency support: open your JPG image and convert to PNG format. Since JPG doesn't contain transparency data, the output preserves opaque pixels. You can then remove the background in an image editor using PNG's transparency support.
- 8How to prepare JPG photos for archiving as PNG: open your important JPG photos and convert them to PNG for archival purposes. PNG's lossless format ensures no further quality degradation, making it suitable for long-term photo storage.
Frequently Asked Questions
Does JPG to PNG conversion improve quality?
No. The conversion is lossless: the PNG output is pixel-identical to the JPG input. However, any quality loss that occurred when the JPG was originally created is permanent. Converting to PNG preserves the JPG as-is without further degradation.
Will the file size be larger after conversion?
Yes. PNG files are typically 3-5 times larger than JPG files because PNG uses lossless compression. The trade-off is that PNG supports transparency and preserves every pixel exactly. Consider WebP as an alternative if you need smaller file sizes with transparency support.
Can I convert JPG to PNG with transparency?
JPG files don't contain transparency data. When you convert JPG to PNG, the output preserves the JPG's opaque pixels as-is. To add transparency, you would need to manually remove the background in an image editor after conversion.
Are there any file size limits?
Since all processing happens in your browser, the practical limit depends on your device's available memory. Most images under 50MB work fine. Very large images (100MB+) may cause performance issues on lower-end devices.
How do I convert JPG to PNG, step by step?
Open the tool, drop the JPG in, PNG is already selected as the output format, and click Save, or drag several files and use Save All for a ZIP. Without a web tool: Windows Paint (File > Save as > PNG), macOS Preview (File > Export > PNG), or Python with PIL: Image.open('a.jpg').save('a.png').
Can the tool remove the background while converting?
No. JPG has no alpha channel and this tool converts pixels as-is, so the background stays. For a transparent result, remove the background first (a background-remover tool or your editor's magic wand), and export the PNG with transparency, or use a dedicated converter with built-in background removal.
Can I convert animated JPG to animated PNG?
No. JPG format does not support animation, and neither does this conversion tool. Both JPG and PNG are single-frame formats. If you need animation, consider using GIF or WebP formats instead.
Why does my PNG file look the same as the JPG but is much larger?
This is expected. JPG uses lossy compression that discards some visual data to achieve smaller file sizes. PNG uses lossless compression that preserves every pixel exactly, resulting in larger files but identical pixel data to the input JPG.
What is the best use case for JPG to PNG conversion?
Converting JPG to PNG is ideal when you need to edit images in software that works best with PNG (like Photoshop layers), when you need transparency support for web design, or when archiving images where you want to prevent any further quality loss from repeated JPG re-saving.
Can I convert screenshots from JPG to PNG?
Yes, and it is highly recommended for screenshots containing text or UI elements. JPG compression creates blurry artifacts around text and sharp edges. PNG preserves these details perfectly, making text in screenshots crisp and readable.
Does the tool preserve color accuracy?
Yes. The conversion preserves the pixel data exactly as it appears in the original JPG. Since no re-encoding occurs during the conversion to PNG, colors remain identical. The PNG output is a pixel-perfect copy of the JPG input.
Why is this jpg to png converter free while other sites limit daily conversions or add watermarks?
Because everything runs in your browser: no servers to pay for, no storage costs, no ads. The trade-off is that very large images are limited by your device's memory, and the conversion is a direct pixel-for-pixel copy: no background removal, no upscaling. If you need those features, look for a paid desktop editor instead.
Why does my jpg to png converter online take so long for a 4K photo?
The browser has to decode, process, and re-encode every pixel on your device. A 12 MP photo is usually instant, but 4K/8K panoramas or long-exposure images can take several seconds on low-end phones and laptops. There is no server-side GPU to offload the work; that is the privacy trade-off of a fully local tool.