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Devtools 360

Convert PNG to JPG

Shrink screenshots and PNG photos by converting them to JPG. Pick the quality and the colour that fills transparent areas, then convert a single file or a whole folder.

Runs in your browser (background worker)Free · No sign-up

How to convert PNG to JPG

  1. Choose or drop your PNG files.
  2. Set the JPG quality and pick a background colour for transparent pixels (white by default).
  3. Click Convert to JPG and download the results individually or as a ZIP.

Supported formats

Input
PNG
Output
JPG
Maximum size
50 MB per file (limited by your device's memory)

What happens to transparency

JPG cannot store transparency. Many converters fill transparent pixels with black, which ruins logos and icons. Here you choose the fill colour — white suits documents and most websites, but you can match any page background. If you need to keep transparency and still get a small file, use PNG to WebP instead.

Benefits

  • Choose the background colour that replaces transparency instead of getting black boxes.
  • Quality slider to balance size and sharpness.
  • Typical photo-like PNGs shrink by 70–90%.

Limitations

  • Transparency is lost; partially transparent edges are blended with the background colour.
  • Text and line art can show slight blurring (ringing) around sharp edges at lower quality settings.

Privacy and security

Images are decoded and re-encoded by your browser in a background Web Worker (or on the page itself in browsers without OffscreenCanvas). Files are never uploaded, and the results exist only in this tab's memory until you download them.

Read our privacy policy for details about the site as a whole.

Frequently asked questions

Why do other converters give me a black background?

Transparent pixels have no colour, and some encoders treat them as black. This tool paints your chosen background colour first, so a logo on a transparent PNG ends up on white (or any colour you pick).

What quality should I choose?

90% keeps screenshots and text crisp. For photos, 75–85% gives much smaller files with no visible difference.

Is the conversion lossless?

No. JPG is a lossy format, so a little detail is discarded. Keep your original PNG if you may need to edit it later.