How do I convert JFIF to JPG?

Upload your JFIF file above. It is converted to JPG automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.

Does converting JFIF to JPG lose quality?

JPG is lossy, so some fine detail is discarded to make the file smaller. Raise the quality in Settings for a closer copy.

JFIF or JPG: which should I use?

Use JFIF for nothing a JPG can't do — it holds the same image data. Use JPG for photos you share, email, print or upload. Keep in mind the main drawback of JPG: no transparency, and every re-save loses a little more detail.

JFIFファイルとは？

A .jfif file is a JPEG with an unusual extension; Windows and some browsers save web images this way. The picture is identical to a .jpg, but many sites and apps refuse the .jfif name.

Is the JFIF to JPG converter free?

Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

Convert JFIF to JPG — Easy-to-Share Photos

Convert JFIF to JPG online for a photo that opens on more devices and websites. No software to install. Preview one free or batch-convert with Premium.

Drop your JFIF file or click to browse

Why convert JFIF to JPG?

JPG is supported far more widely than JFIF, so the file is easier to open, share and upload.
JPG is made for photos you share, email, print or upload.

What to expect when converting JFIF to JPG

JPG uses lossy compression; raise the quality in Settings for a closer copy of the original.
元のJFIFファイルは変更されません。新しいJPGのコピーをダウンロードします。

JFIFとJPGの比較

機能	JFIF	JPG
氏名	JPEG File Interchange Format	JPEG (Joint Photographic Experts Group)
由来	Defined in 1992 as the standard JPEG file layout	1992年に標準化
圧縮	非可逆（中身はJPEG）	非可逆、画質を調整可能
透過	いいえ	いいえ
アニメーション	いいえ	いいえ
色	1,670万色（チャンネルあたり8ビット）	1,670万色（チャンネルあたり8ビット）
開けるアプリ	Most image viewers, but many upload forms reject the .jfif extension	All browsers, phones, computers and photo apps
こんな方に最適	JPGにできないことは何もない — 同じ画像データを保持している	photos you share, email, print or upload
主な欠点	upload forms and some apps reject the .jfif extension	no transparency, and every re-save loses a little more detail

In short: choose JFIF for nothing a JPG can't do — it holds the same image data; choose JPG for photos you share, email, print or upload.

Frequently asked questions

How do I convert JFIF to JPG?: Upload your JFIF file above. It is converted to JPG automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.
Does converting JFIF to JPG lose quality?: JPG is lossy, so some fine detail is discarded to make the file smaller. Raise the quality in Settings for a closer copy.
JFIF or JPG: which should I use?: Use JFIF for nothing a JPG can't do — it holds the same image data. Use JPG for photos you share, email, print or upload. Keep in mind the main drawback of JPG: no transparency, and every re-save loses a little more detail.
JFIFファイルとは？: A .jfif file is a JPEG with an unusual extension; Windows and some browsers save web images this way. The picture is identical to a .jpg, but many sites and apps refuse the .jfif name.
Is the JFIF to JPG converter free?: Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

JFIFからJPGへでできること

始める前に、主な機能を確認してください。

JFIF 画像を標準 JPG ファイルに変換する
サイズや鮮明さのために JPG の品質を調整する
透明な領域の背景の塗りつぶしを設定する
多数の JFIF ファイルを一度にバッチ変換します
開かない電子メールとカメラ画像を修正する

このツールを使用する

設定リファレンス

JFIFからJPGへで使用可能なコントロール。

設定

出力形式ドロップダウン: Chooses the file type you download. The page opens on its own output format; switch to any other format before converting.オプション: JPGPNGWebPAVIFGIFTIFFBMPICOPDF
品質スライダーレンジ: 20–100 · デフォルト: 90: For JPG, WebP, AVIF and image-to-PDF output: higher keeps more detail but makes a bigger file; 60–80 suits most photos. Documents (Publisher, XPS, EPS…) become PDFs with every page and sharp text, with no quality setting.
ロスレスモードオン/オフ: For WebP and AVIF output: keeps every pixel exactly (best for logos, graphics and transparency) at the cost of a larger file.
背景の塗りつぶしカラーピッカー: 透過を保存できないJPG、BMP、画像からPDFへの出力用：透明な部分を塗りつぶす色（既定は白）。