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JFIF to PNG Converter — Free, Lossless Output, No Upload

Turn a .jfif file into a lossless PNG that every app, upload form, and image editor accepts without errors.

Free · no signup2 free files a day100% in-browser · no upload

Tap to select JFIF files

or click to browse

2 free files per day (2 left today) · Up to 10 MB each · Upgrade for more

Free image outputs include a repeating formatdrop.com watermark · Remove with Pro

✓ Files never uploaded✓ 100% browser-based✓ No account required

How to convert JFIF to PNG online

  1. 1

    Drop your JFIF file

    Drag your JPEG File Interchange Format file onto the box above, or click it to pick a file.

  2. 2

    Wait a few seconds

    Conversion starts on its own and runs on your device, not on a server.

  3. 3

    Download your PNG

    Click Download to save the Portable Network Graphics file.

JFIF vs PNG: format overview

JFIF

JPEG File Interchange Format

C-Cube Microsystems / Independent JPEG Group · 1992

Compression
lossy
Color depth
8-bit per channel
Transparency
No
  • ✓ Identical image quality to JPEG — same compression algorithm
  • ✓ Small file sizes with adjustable quality
  • ✗ Windows Photo Viewer and Paint don't open .jfif by default
PNG

Portable Network Graphics

PNG Development Group (Thomas Boutell) · 1996

Compression
lossless
Color depth
16-bit
Transparency
Yes
  • ✓ Lossless compression — pixel-perfect quality
  • ✓ Full alpha transparency (8-bit alpha channel)

JFIF magic bytes: FF D8 FF E0 (JFIF APP0 application marker)

PNG magic bytes: 89 50 4E 47 0D 0A 1A 0A

Why convert JFIF to PNG?

A .jfif file is a JPEG image with an unusual extension. Firefox saves JPEG images as .jfif when the server's URL doesn't end in .jpg, which is why many people find they've downloaded a file nothing will open or accept. Converting JFIF to PNG turns that file into a universally-supported lossless image.

PNG is the right choice over JPG when you need lossless quality — for icons, logos, screenshots, text-heavy images, or any graphic where you want no compression artifacts. It's also the format most reliably accepted by design tools like Figma, Canva, Adobe Illustrator, and Google Slides. If the .jfif image contains a background you plan to remove, PNG also supports transparency, though the JFIF image itself doesn't carry an alpha channel (that would need to be added manually in an image editor after conversion).

The conversion decodes the JFIF/JPEG data and re-encodes it as a lossless PNG. Since JPEG uses lossy compression, the PNG output captures the image exactly as the JPEG stored it — no further quality loss is introduced. File size will be larger than the original JFIF because PNG stores every pixel without compression artifacts.

Common reasons to convert JFIF to PNG:

  • ›Uploading to design platforms or CMSes that require PNG
  • ›Preparing an image for further editing without introducing JPEG artifacts
  • ›Converting a Firefox-saved image into a format every application opens
  • ›Archiving images in a lossless format for long-term storage

Quality & file size: JFIF to PNG

Typical sizes: JFIF 1–4 MB (3MP photo); PNG 8–25 MB (12MP photo).

PNG will not bring back detail that JFIF compression already removed, but it adds no further loss — handy when you need to edit the image.

On the free tier, PNG output has a repeating formatdrop.com watermark; Pro output doesn't.

Frequently asked questions

Why is the PNG larger than the original JFIF file?
JPEG (and JFIF) uses lossy compression that significantly reduces file size — a 3 MB photo might compress to 300 KB. PNG is lossless — every pixel is stored exactly. Converting JFIF to PNG removes JPEG compression, so the output is typically 3–10× larger. This is expected and correct; you're trading file size for lossless quality.
Will the PNG have a transparent background?
No — JFIF (JPEG) doesn't support transparency, so there's no alpha channel to preserve. The PNG will have the same opaque background as the original JFIF image. To make a background transparent, open the resulting PNG in an image editor like Photoshop, GIMP, or Canva and use the background removal tool.

Your JFIF file never leaves this tab — FormatDrop has no endpoint that receives file data. How it works