FileConvertMage

Compatibility

PNG to JPG

Turn a PNG into a JPEG that forms, printers, and older apps will accept. Transparent pixels cannot survive.

Your file is processed in your browser and is not uploaded to FileConvertMage. Browser extensions, the clipboard, and screen capture can still expose a file on your device.

Detected input: none

Target output: JPG

Choose one file, or drop it on the box. The filename is not trusted until the bytes match PNG.

Drop one PNG here. The file picker above is the keyboard-accessible path.

Choose a PNG file.

Original

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Output

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What this conversion changes

  • Alpha / transparency
  • PNG text chunks and other metadata
  • Lossless pixel values

How it works

The browser checks PNG magic bytes, decodes the pixels, paints them onto a canvas, and encodes a JPEG Blob. If the bytes are not PNG, conversion never starts.

Input and output

Input is one PNG file. Output is a new .jpg with MIME image/jpeg. GIF, WebP, SVG, and HEIC are rejected here.

Common uses

Upload forms

A government or marketplace form that lists JPG only will reject a screenshot saved as PNG.

Print shops

Many print pipelines still expect JPEG photos, not PNG graphics with unused alpha.

How to convert this file

  1. Choose a PNG, or drop one file onto the box.
  2. If the PNG has transparency, pick a background color.
  3. Adjust JPEG quality if you need a smaller file or fewer artifacts.
  4. Convert, then download only after the output is a real JPEG.

Limitations

  • Transparency cannot be kept.
  • Metadata and color profiles are usually dropped.
  • Very large PNGs can fail the memory guard on phones.

Questions

What happens to transparent pixels?

JPEG has no alpha channel. This converter fills transparent areas with the background color you pick before encoding. White is the default because most forms expect a white page.

Will the JPG look identical to the PNG?

No. JPEG is lossy. Sharp edges, screenshots, and text can show artifacts. Photographs usually look acceptable at quality 0.8–0.9.

Is the PNG uploaded?

No. Decoding and JPEG encoding run in your browser. FileConvertMage does not send the file to our server.

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