TIFF から JPG へのオンライン変換

TIFF ファイルを JPG 形式に3ステップで簡単変換。

JPG⌄

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⚙ オプション設定

Resize

Color Filter

DPI

dpi

Crop (px)

TIFF vs JPG：完全なフォーマットガイド

TIFF

None/LZW/ZIP

圧縮

JPG

Lossy

TIFF

Supported — extra alpha channels with full precision, stored as associated or unassociated alpha

透明度

JPG

Not supported — transparent areas always render as solid white or the specified matte color

TIFF

Not natively supported; multi-page TIFF stores multiple images but without animation timing data

アニメーション

JPG

Not supported

TIFF

Up to 64-bit (16-bit per channel RGBA), including CMYK, Lab, and specialized color space support

色深度

JPG

24-bit (8 bits per channel: RGB) — up to 16.7 million colors

TIFF

5 MB – 100 MB+ per image — a 24MP camera image is typically 60–80 MB as uncompressed TIFF

ファイルサイズ

JPG

50 KB – 5 MB per image depending on resolution and quality setting

TIFF

Not supported in any web browser — cannot be displayed on web pages without prior conversion

ブラウザサポート

JPG

Universal — all browsers, all operating systems, all devices including IE6 and older smartphones

TIFF

Professional printing

最適な用途

JPG

Photos, web images

一般的なユースケース：TIFF → JPG

🌐 Web photo publishing📧 Email image sharing📱 Mobile device viewing🖨️ Consumer print lab orders📤 Social media uploads

⚠️TIFF often stores 16-bit or 32-bit per channel data that will be downsampled to 8-bit in the JPG output. This color depth reduction is virtually invisible in practice but means the JPG cannot be used for HDR editing workflows.

Format

TIFF

TIFF was developed by Aldus Corporation in 1986 to standardize images scanned for desktop publishing. Its flexible, extensible container supports multiple compression options and bit depths within the…

長所

+16-bit and 32-bit per channel for HDR photography and scientific imaging

+Multiple compression options: balance quality against file size as needed

+Industry standard for professional printing, prepress, and photography archiving

+CMYK and Lab color space support for accurate print production

制限事項

−Enormous file sizes — impractical for web delivery or consumer sharing

−No browser support — must convert before any web display

−Slow to open and process even in professional software

−Incompatible with consumer applications, email clients, and mobile devices

Professional photography archiving and long-term preservationPrint production workflows requiring CMYK or 16-bit color depthMedical, scientific, or GIS imaging requiring maximum data precisionWhen a print shop or institutional client specifically requires TIFF format

Format

JPG

Standardized in 1992 by the Joint Photographic Experts Group, JPEG became the internet's dominant image format through the 1990s. Its DCT compression made digital photography practical for early web a…

長所

+Smallest file sizes for photographs (10:1 to 20:1 compression ratio)

+Universal compatibility across every device, software, and platform

+Embeds EXIF metadata (GPS, camera settings, date/time)

+Adjustable quality/size trade-off at save time

制限事項

−Lossy — permanently discards image data with every save

−No transparency — backgrounds are always solid

−Visible block artifacts on sharp edges, text, and high-contrast areas

−Quality degrades with each re-save (generational quality loss)

Sharing photographs on social media, email, or blogsCamera images where file size matters more than pixel perfectionWeb page photos where page load speed is the priorityAny context requiring maximum cross-device and software compatibility

TIFF を JPG に変換

TIFFファイルはプロフェッショナルな使用向けに設計されており、共有、オンライン公開、メールには理想的ではありません。TIFFをJPGに変換すると、高品質な画像が日常的な使用に実用的になります。JPGの圧縮は20MBのTIFFを優れた詳細を維持したまま2MB未満に削減します。

なぜ TIFF を JPG に変換するのか？

🌐

Web公開

ブラウザはTIFFを表示できません。WebサイトやブログにJPGとして埋め込む画像に変換してください。

📲

ソーシャルメディア

Instagram、Facebook、Twitterはすべて JPGアップロードを受け付けています——多くはTIFFを完全に拒否します。

✉️

メール共有

メールのサイズ制限を超えることなく、クライアントや同僚と高品質な写真を共有できます。

📂

クラウドストレージ

可逆性が不要な場合は、アーカイブしたTIFFをJPGに変換してストレージコストを削減します。

TIFF

ファイル拡張子.tiff
説明TIFF is a flexible, adaptable format for professional printing, publishing, and photography. Supports lossless compression.
関連プログラムAdobe Photoshop, GIMP, CorelDRAW, Lightroom
開発者Aldus Corporation (now Adobe)
MIME タイプimage/tiff

JPG

ファイル拡張子.jpg
説明JPEG (Joint Photographic Experts Group) is the most widely used lossy image compression format, ideal for photographs and complex images with many colors. JPEG achieves small file sizes by discarding some image data, making it perfect for web use and sharing.
関連プログラムAdobe Photoshop, GIMP, Windows Photo Viewer, Preview (Mac)
開発者Joint Photographic Experts Group
MIME タイプimage/jpeg