Convert PNG to JFIF
Free and entirely in your browser - a genuine re-encode to real JPEG data labeled .jfif, not a rename.
Drag & drop your PNG files here
or
Supports PNG · JPG · WEBP · JFIF — Max file size: 25MB
Advanced settingsQuality, resize
How to Convert PNG to JFIF
- 1Drop or select your PNG files - they'll show as "Ready."
- 2Click Convert on a file, or convert the whole batch at once. This always re-encodes to real JPEG data labeled .jfif - PNG has no lossless shortcut into that format.
- 3Download instantly, or grab them all as one .zip.
- Free to use
- No registration required
- Batch conversion
- Works on any device
- Quality-controlled re-encode
What Is a PNG File? What Is a JFIF File?
What is a PNG file?
PNG (Portable Network Graphics) is a lossless image format that supports transparency - unlike JPEG, it doesn't discard image data to save space. That makes it the better choice for graphics, screenshots, and images you plan to edit further, at the cost of larger file sizes for photos.
What is a JFIF file?
JFIF (JPEG File Interchange Format) is the file format spec that JPEG images actually use - a .jfif file's contents are a real JPEG image, just saved with a .jfif extension instead of .jpg. It usually shows up when Windows, Microsoft Edge, or certain photo apps save or download an image and label it that way automatically.
PNG vs JFIF
| .png | .jfif | |
|---|---|---|
| Image format | PNG | JFIF |
| Compression | Lossless - no detail discarded, larger files | Lossy - identical compression to JPEG (it is JPEG) |
| Transparency | Fully supported | Not supported |
| Typical file size | Larger for photos, small for flat-color graphics | Small to medium - identical to an equivalent JPG |
| Common use | Graphics, screenshots, logos, and images headed for further editing | Auto-saved by some Windows apps and Edge when downloading web images |
Why Convert PNG to JFIF?
Some legacy tools, QA pipelines, or upload forms specifically expect a .jfif extension. Since JFIF is really just JPEG under a different name, converting a PNG for this purpose means re-encoding it as JPEG data first - the same tradeoff as converting PNG to JPG, just with the resulting file labeled .jfif instead.
Frequently Asked Questions
Is converting PNG to JFIF the same as JPG to JFIF?
No. JPG to JFIF is a pure label change, because JFIF and JPEG are the same format - the bytes never move. PNG to JFIF is different: PNG is a genuinely different format, so this tool actually re-encodes the image as real JPEG data and then labels the output .jfif. The result is a real JFIF/JPEG file, just not a lossless rename of your original PNG.
Why would I want a PNG converted to JFIF specifically, instead of JPG?
Functionally a .jfif and a .jpg produced this way are identical - same JPEG bytes, different extension. Pick JFIF if you specifically need that extension for a legacy tool, QA workflow, or upload form that expects it; otherwise JPG is the more universally recognized choice.
Does converting PNG to JFIF reduce image quality?
Yes, a little - the output is real JPEG data, which uses lossy compression, so converting from lossless PNG discards some detail. Keeping the quality slider high (92% by default) keeps that loss visually minimal for most images.
What happens to transparency when I convert PNG to JFIF?
JFIF/JPEG has no transparency channel, so any transparent areas in the source PNG are filled with white before encoding. If you need to keep transparency, stay on PNG or convert to WEBP instead.
Is my uploaded image secure - does anything get uploaded to a server?
No. Every conversion happens locally in your browser using the Canvas and File APIs. Your image is never uploaded anywhere, which is also why conversion is instant even for larger batches.
Can I convert multiple PNG files to JFIF at once?
Yes, drop or select multiple files and convert them independently, or use the batch Convert button for the whole queue. Once two or more succeed, a "download all as .zip" option appears.
Is there a file size limit?
Files up to 25MB are supported, which comfortably covers photos, screenshots, and graphics. Since everything runs in your browser, very large files can be slower to process than a server-side tool.