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PNG to JPG

PNG → JPG/JPEG: smaller file sizes for photos, web images, and opaque 3D color maps.

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About This Tool

Convert PNG to JPG/JPEG to reduce file size for web delivery and 3D asset packs. JPG lossy compression works well for photos and complex color textures. Transparent areas become white. All processing happens locally in your browser.

Tips

  • 1JPG is best for photos and opaque albedo maps, not text-heavy graphics
  • 2Transparent PNG areas will become white in JPG output
  • 3Adjust the quality slider to balance file size and image clarity

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.

Quality

Quality

Default90%

Range10% – 100% · step 5%

Lossy compression quality for JPEG and WebP. Higher values yield better quality but larger files.

Format Information

Input 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)

Output 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

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 PNG to JPG?

A

JPG files are much smaller than PNG for photographic images. When file size matters more than perfect quality, like on web pages, converting PNG to JPG is very useful.

Q

What happens to transparency?

A

JPG does not support transparency. Transparent areas in the PNG will be filled with white. If you need transparent output, use PNG or WebP format.

Q

Can I adjust the quality?

A

Yes. The quality slider controls the level of lossy compression. Higher quality means larger files, lower quality means smaller files but visible artifacts.

Q

Should I convert 3D normal maps to JPG?

A

Usually not. Normal and data maps need clean detail, so prefer lossless formats like PNG. JPG is better for color/albedo textures without alpha.

Q

Does the conversion preserve ICC color profiles?

A

No, converting PNG to JPG does not preserve embedded ICC profiles. The output JPG is saved with sRGB color space. For best color accuracy, ensure your PNG uses sRGB or adjust colors manually before converting.

Q

Can I delete the original PNG after converting to JPG?

A

It is not recommended. JPG is lossy, so once you delete the PNG, the discarded detail cannot be recovered. Keep the original file if you may need to re-export at higher quality later.