Free · No upload · Runs in your browser

TIFF to Base64 Converter

Q: What does a TIFF Base64 string look like?

A TIFF data URI starts with data:image/tiff;base64, followed by the encoded body, which typically begins with SUkq — the Base64 form of the II*\0 (little-endian) TIFF file header. Files from some cameras use MM\0* (big-endian) instead, which begins with TU0AKg in Base64.

Q: Should I encode a TIFF as Base64?

Usually only for machine-to-machine uses — API payloads, JSON fixtures, or embedding a scan into a document format that expects text. TIFF files are often large (lossless, print-resolution), and Base64 adds about 33% on top, so inlining a TIFF into HTML or CSS is rarely a good idea.

Also covers .tif — same format, one page.

Drop in a TIFF / TIF file and instantly get its Base64 string and data URI — ready to paste into JSON, an API payload, or a document template. One click to copy.

The converter reads and encodes the selected file locally. It does not upload the file for conversion. Advertising and usage events may still make network requests; see the Privacy policy. Copying the output into another service shares the file when you send it there.

Drop a TIFF here

or paste from clipboard · .tif and .tiff both work

TIFF to Base64, explained

TIFF (Tagged Image File Format) is the workhorse format of scanners, print shops and photo archives — lossless, often LZW-compressed, and frequently huge. Encoding it to Base64 turns the binary file into a plain-text string you can ship inside JSON, feed to an API, or embed in a document template that only accepts text.

How to use it

{
  "scan": "data:image/tiff;base64,SUkqAAwAAAAA..."
}

Mind the 33% — and the browser caveat

Base64 preserves the original TIFF bytes; it does not convert them to PNG or JPEG. Preview and display depend on the browser, operating system, file encoding, and receiving service. Encoding can succeed even when a preview is unavailable. For broad web compatibility, convert the image to PNG or JPEG with a suitable tool before encoding.

Endian signatures

Encoding preserves the entire TIFF file, including its byte order and any additional pages. A preview is not proof that every page was displayed; inspect multi-page files with a suitable TIFF viewer.

Private by design

More Base64 converters

Image to Base64Any format — PNG, JPG, GIF, WebP, SVG. Convert in codeJavaScript, Python, PHP, Java, Linux & n8n snippets. Data URI GeneratorTurn any image into a data URI for CSS or HTML. PNG to Base64Encode PNGs, transparency kept. JPG to Base64Encode JPEG photos for web use. SVG to Base64Encode vector SVGs for CSS. WebP to Base64Encode modern WebP images. GIF to Base64Encode GIF animations into a data URI. HEIC to Base64Encode iPhone photos locally. BMP to Base64Encode Windows bitmap files. Base64 to ImageDecode a string back into a file. Base64 to PNGDecode and save as PNG. Base64 to JPGDecode and save as JPEG. Base64 to SVGDecode vector SVG markup. Base64 to WebPDecode and save as WebP. Base64 to GIFDecode and save as a GIF.

Frequently asked questions

What does a TIFF Base64 string look like?

A TIFF data URI starts with data:image/tiff;base64, and the body typically begins with SUkq — the Base64 form of the little-endian II*\0 TIFF header. Big-endian files (MM\0*) start with TU0AKg instead.

Can browsers display a Base64 TIFF inline?

Should I encode a TIFF as Base64?

Usually only for APIs, JSON fixtures and document pipelines. TIFF files are often large and Base64 adds ~33%, so inlining a TIFF into HTML or CSS is rarely a good idea.

Is the conversion private?