Is my TIFF uploaded to a server?

No. The file is parsed, edited and re-encoded entirely in your browser tab.

What is the maximum file size?

There is no hard limit; practical limits come from your machine's memory. Large-document handling is tiled specifically so big scans stay workable.

Can I convert a TIFF to CMYK here too?

Yes — the same profile-driven conversion the CMYK page describes applies to TIFF documents, and the profile you convert with is embedded on export.

Editor › TIFF Editor in Your Browser

How can I edit a TIFF file online without losing quality?

PhotoAIA opens TIFF files locally in your browser — including 16-bit, CMYK and ICC-embedded TIFFs — lets you edit with layers and adjustment layers, and exports TIFF again with LZW/Deflate or uncompressed encoding, tiled output, and the colour profile preserved. Editing itself is 8 bits per channel: a 16-bit source survives byte-for-byte only while you crop, rotate or flip it losslessly, and any other edit converts it to 8-bit with a warning. Nothing is uploaded; a TIFF master should stay on your machine.

Why "online TIFF editors" usually disappoint

TIFF is the format of print masters, scans and archival images — which means real TIFF files are frequently 16-bit, sometimes CMYK, and almost always carry an ICC profile. Generic online converters flatten all three: they decode to 8-bit sRGB, edit, and re-encode, silently discarding exactly the properties that made the file a master. If the result looks fine on screen, the damage only surfaces at the press.

What surviving the round trip means here

16-bit sources pass through untouched — a crop/rotate/flip-only session exports 16-bit TIFF again, byte-faithful. Any pixel edit converts to 8-bit, and the editor warns you first.
CMYK TIFFs open in CMYK with their embedded profile interpreted through LittleCMS — not force-converted to sRGB for display convenience.
The embedded ICC profile is read on import and written on export.
Compression choices on export: uncompressed, LZW or Deflate, with optional tiled layout for very large images.
Multi-page TIFFs open with a page selector.

Editing, not just converting

This is a full editor, not a crop-and-rotate widget: layers, adjustment layers, masks, selections, retouching tools, smart objects and paths all work on a TIFF document exactly as on any other. When the edit is done, export back to TIFF — or to PSD if the file is heading into an Adobe workflow.

Honest limits

TIFF is a sprawling specification; exotic variants (unusual planar configurations, vendor-specific extensions) may not open. The importer is fuzz-tested and fails with a clear message rather than corrupting silently, and the known-limitations page tracks what is and is not covered.

Editing is 8 bits per channel throughout — for RGB and CMYK alike. The 16-bit story is a lossless PASSTHROUGH: an imported 16-bit TIFF that you only crop, rotate or flip exports as 16-bit again; the moment you paint, adjust or composite, the data drops to 8-bit with a warning. If your job needs true 16-bit editing (heavy tonal grading on scans, for example), a desktop editor is still the right tool — stated here because it matters to prepress work.

Questions

Is my TIFF uploaded to a server?: No. The file is parsed, edited and re-encoded entirely in your browser tab.
What is the maximum file size?: There is no hard limit; practical limits come from your machine's memory. Large-document handling is tiled specifically so big scans stay workable.
Can I convert a TIFF to CMYK here too?: Yes — the same profile-driven conversion the CMYK page describes applies to TIFF documents, and the profile you convert with is embedded on export.

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