Drop your AVIF file(s) here
You can add more than one file
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A .jfif file is a JPEG. Same compression, same picture data, older extension. An AVIF to JFIF conversion is really an AVIF to JPEG conversion that finishes with .jfif on the end of the filename, which is exactly what you need when something is checking the extension rather than the file itself.
Usually age. Some upload forms, a few scanner tools and a lot of software written in the nineties were built when JFIF was the ordinary way to spell it, and they turn away anything else on sight. Windows also hands out .jfif on its own when you save certain pictures from a browser, which is why the extension keeps resurfacing.
Transparency disappears, since JPEG has no way to hold it and see through areas are filled with white. Colour depth comes down. And because JPEG compresses by discarding detail, the picture is written fresh rather than copied across, so an image already compressed once gets compressed again. The file normally grows rather than shrinks.
Every row carries its own name field, so you can set the filename you actually need instead of converting first and renaming afterwards. That saves a step when the system you are feeding cares about the name as much as the extension.
Files end in .jfif
The extension comes out as asked for rather than as .jpg.
Take the set as one ZIP
A finished list downloads in a single archive instead of one click per row.
Nothing to configure
The only choice to make is which format each row is heading to.
AVIF to GIF Converter
Turn AVIF images into still GIF files for the places that will only take a GIF.
HEIC to PNG Converter
Turn iPhone HEIC photos into PNG files that open everywhere and lose no further quality.
HEIC to JPG Converter
Convert iPhone HEIC photos into .jpg files that every phone, computer and upload form accepts.
HEIC to JPEG Converter
Turn Apple HEIC photos into standard JPEG images, written with the four letter extension.
No. Both are JPEG data written to the same specification. Only the three characters after the dot differ.
Not from an AVIF. Renaming changes the label, not the contents, and the receiving software will fail the moment it tries to decode it.
A registry entry decides which extension gets used for JPEG images saved from a browser, and on many machines it has been set to .jfif for years.
Often yes, since most modern sites check the file contents. The ones that check the extension list are exactly the ones that wanted .jfif in the first place.