Will flipping a TIFF reduce image quality?

No, as long as you keep a lossless compression scheme (LZW, Deflate, ZSTD, PackBits, CCITT Group 4, or None) — flipping is a pure pixel rearrangement and re-encoding losslessly produces a file with bit-identical pixel data. The one exception is JPEG-compressed TIFF: that path runs the kept pixels through the JPEG encoder during the flip, so a tiny generation loss is possible. The default LZW path is lossless.

What's the difference between flipping the pixels and changing the EXIF Orientation tag?

A pixel flip rewrites the actual image data so every viewer — modern, legacy, print RIP, or web library — shows the corrected orientation. Changing EXIF Tag 274 only sets a hint; viewers that honor the tag rotate on display, but viewers that ignore it (older Pillow versions, most prepress workflows, many medical imaging tools) still show the wrong orientation. This tool flips the pixels and resets the Orientation tag to 1 (normal), so the result is consistent everywhere. If you only need a tag change, EXIF editors are faster — but the file will still look wrong in tag-ignorant software.

Will multi-page TIFFs flip every page?

Yes. TIFF supports multiple subfiles (pages) in a single file — common for scanned book chapters, fax archives, and multi-slide microscope captures. Each page flips with the same horizontal or vertical setting in one pass. If you need different flips per page, split the TIFF first (any TIFF splitter or TIFF to PDF followed by per-page work) and recombine after.

Can I keep CCITT Group 4 compression for a flipped bitonal scan?

Yes — pick CCITT Group 4 under Image Compression Type and keep Image Bit Depth at 1-bit. Group 4 is the standard for fax-style and line-art TIFFs and produces dramatically smaller files than LZW for bitonal content. Output is bit-perfect after the flip; only valid at 1-bit depth, so the encoder will reject 8-bit or 16-bit color sources.

Are 16-bit-per-channel TIFFs supported?

Yes. Set Image Bit Depth to 16-bit to preserve the full dynamic range of medical scans, raw camera linearizations, and high-end art reproductions. Flipping is bit-exact at 16-bit when the compression is lossless. Most prepress and scientific pipelines expect 16-bit, so leaving the source bit depth unchanged is the safe default.

Will the flip preserve embedded ICC color profiles, alpha channels, and TIFF tags?

Yes. The embedded ICC profile (sRGB, Adobe RGB, ProPhoto, custom CMYK, or scanner-supplied profile) is copied to the output unchanged, and alpha channels flip alongside the color channels so transparency stays aligned. Standard tags — ImageDescription, DateTime, Make, Model, ResolutionUnit, XResolution, YResolution — are carried over. The Orientation tag (274) is reset to 1 since the pixels themselves are now in their intended layout.

Can I flip a CMYK or LAB TIFF without converting to RGB?

Yes. The flip operates on whatever colorspace the source uses — CMYK separations stay CMYK, LAB stays LAB, grayscale stays grayscale. No automatic conversion to RGB happens, which matters for prepress workflows where round-tripping through RGB would break the press-ready ink coverage and dot gain calibration.

What's the difference between "flip" and "mirror" in TIFF terminology?

They describe the same operation. "Mirror" most commonly refers to a horizontal flip (left ↔ right reflection, like a bathroom mirror) — that's what most apps and the EXIF Orientation values 2 and 4 mean. "Flip Vertical" is the top ↔ bottom version (Orientation values 4 and 6 in different combinations). If a tool only labels one button "Mirror", it almost always means horizontal — pick Vertical Flip here for the upside-down version.

Why don't custom-angle rotations show up here?

Flipping mathematically reflects across an axis — only horizontal and vertical exist. For 90° / 180° / 270° turns or arbitrary angles (1.5° to straighten a tilted scan, or 45° for decorative work), use Rotate TIFF. Lossless 90° / 180° / 270° rotations are available there for block-aligned content; custom angles require interpolation, which is still safe at 16-bit but introduces minor resampling at 8-bit.

Flip TIFF

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