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JPG to PNG

JPG/JPEG → PNG: lossless storage for editing, compositing, and 3D texture work.

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About This Tool

Convert JPG/JPEG to PNG when you need lossless storage and dependable compatibility across design apps and 3D pipelines. It stabilizes pixel data before further edits or before packing material maps. The source JPG has no alpha channel, so the output is fully opaque. Everything runs locally in your browser.

Tips

  • 1PNG is lossless, so conversion adds no extra quality loss
  • 2Great before texture edits or import into Blender, Substance, or other DCC tools
  • 3JPG has no transparency, so output PNG is fully opaque
  • 4PNG files are usually larger than the source JPG

About Configuration Options

Output Dimensions

Output Dimensions

Set the output width and height. Square presets (e.g. 1024×1024) suit texture workflows; use custom with optional aspect-ratio lock to keep source proportions. Format-conversion pages default to the source size.

Lock aspect ratio

Defaulton

When enabled in custom size mode, changing width or height automatically scales the other side to match the source image proportions. Disable to set width and height independently.

Format Information

Input format

Extension:
jpg, jpeg
Full Name:
JPEG (Joint Photographic Experts Group)
Type:
Image
Format:
JPG / JPEG
Tools:
Photoshop、GIMP、Krita、Paint.NET
Open With:
Image Editor、Windows Photos、Preview (Mac)
Description:
JPG (JPEG) is the most universal lossy photo format, standardized by the JPEG committee in 1992, offering a good balance between quality and file size, and supported by virtually every device and software. It is ideal for photographs, screenshots, and web images. The downside of JPG is that compression introduces block artifacts and it does not support transparency, causing edges and text to blur. For image-to-3D conversion, JPG suits photographic height maps, but for contour-based conversion, PNG is recommended for clean edges; artifacts at the boundary between dark backgrounds and subject may affect the quality of the generated mesh.

Notes:

  • Maximum supported resolution: 4096×4096 pixels
  • Lossy compression may introduce artifacts on sharp edges

Supported Features:

  • Efficient lossy compression for photos
  • Broad compatibility across all platforms and editing tools
  • 24-bit RGB color support

Output format

Extension:
png
Full Name:
Portable Network Graphics
Type:
Image
Format:
PNG
Tools:
Photoshop、GIMP、Krita、Paint.NET
Open With:
Image Editor、Windows Photos、Preview (Mac)
Description:
PNG is a lossless raster format with 8-bit alpha transparency, offering sharp edges and no artifacts. It is preferred for converting silhouettes to 3D models, avoiding color banding and producing cleaner meshes than JPEG. The trade-off: larger file sizes than JPEG, no CMYK support. For 3D conversion: use 16-bit grayscale for height maps (up to 4096×4096); transparent backgrounds are auto-detected, so manual masking is unnecessary.

Notes:

  • Maximum supported resolution: 4096×4096 pixels
  • Transparent backgrounds are automatically detected and handled

Supported Features:

  • Lossless compression preserves image quality
  • Alpha channel transparency for precise contour extraction
  • Wide color support (24-bit RGB + 8-bit alpha)

How to Use

1

Import Image File

Drop a PNG, JPEG, WebP, BMP, or KTX2 texture/image file. KTX2 inputs are automatically decoded to PNG for conversion.

2

Configure Conversion Parameters

Choose output format when available (PNG, JPEG, WebP, KTX2), set texture dimensions, and adjust quality. For KTX2, pick ETC1S or UASTC.

3

Convert and Download

Click Convert to process the image or texture. The file downloads automatically in your chosen format, ready for web, design, or 3D pipelines.

Frequently Asked Questions

View all FAQs
Q

Why convert JPG to PNG?

A

PNG uses lossless compression, which suits archiving, graphics with text, and any workflow that needs pixel-accurate data. Note that compression artifacts already present in the JPG stay embedded in the pixels.

Q

Does the conversion keep the EXIF metadata from my JPG?

A

No. JPG files often carry EXIF data such as camera settings, date, and orientation, but this tool re-encodes the pixels in your browser, so EXIF metadata is not carried over to the PNG.

Q

After converting to PNG, why do text and sharp edges still look soft?

A

PNG is lossless, so the conversion does not degrade anything: the softness comes from the JPG's lossy compression, which is already baked into the pixels. For the crispest result, export from the original source file rather than converting from a compressed JPG.

Q

Can the PNG inherit a transparent background from the JPG?

A

No. JPG does not support an alpha channel, so the source has no transparency to preserve. The output PNG will be fully opaque.

Q

Does converting JPG to PNG improve 3D texture quality?

A

It avoids additional loss from re-saving as JPG, but it cannot remove artifacts already baked into the source JPG. For high-quality material maps, the best practice is to author in PNG or WebP from the start.

Q

Why is there no quality slider for PNG output?

A

PNG is a lossless format, so no data is discarded and there is nothing to adjust: the output size depends entirely on the image content. A quality slider only appears for lossy target formats like JPG and WebP.