Convert TIFF to AVIF — Massive Files, Tiny Output
Shrink 500 MB TIFF scans to 5 MB AVIF — often smaller than the equivalent WebP. 16-bit, CMYK, LZW, multi-page — all handled automatically. Runs entirely in your browser.
In-browser TIFF → AVIF conversion
Drop .tif / .tiff files of any size. The engine decodes through ImageMagick 7 (handling 16-bit, CMYK, LZW, JPEG-in-TIFF), normalises to 8-bit RGB, and re-encodes through libavif + libaom. Color profiles are preserved.
Supported input formats
- ✓ JPG / JPEG — Photos, portraits, web content
- ✓ PNG — Screenshots, icons, transparent images
- ✓ HEIC / HEIF — iPhone photos, Apple formats
- ✓ TIFF — Scans, prints, high-resolution archives
- ✓ GIF — Animations and static GIFs
- ✓ BMP, PSD & more — Anything ImageMagick can decode
How the conversion works
- 1. DropDrag files or a whole folder into the box below. Folder structure is preserved in the output ZIP.
- 2. AnalyzeEach image is analyzed for entropy and content type. The engine picks per-image quality settings targeting PSNR ≥ 44.5 and SSIM ≥ 0.95.
- 3. EncodeConversion runs on all of your CPU cores in parallel via Web Workers. EXIF, ICC color profiles and geolocation are copied onto the WebP or AVIF output.
- 4. DownloadWhen the batch is done, a ZIP containing every converted file downloads automatically. No re-upload, no waiting on a server.
TIFF is for archives. AVIF is for everything downstream.
TIFF is the right format for masters and prepress. AVIF is the smallest modern target for distributing those same images.
TIFF for archive, AVIF for distribution
TIFF has ruled professional imaging since 1986 — 16-bit color, CMYK, multi-page, lossless storage. It's the right format for archival masters. It is absolutely the wrong format for the web, email, cloud galleries or anything mobile. A single professional flatbed scan routinely hits 200–500 MB. AVIF compresses the same content to a web-ready file while preserving visual fidelity at normal viewing distance.
How much smaller? Usually 98–99%
Converting a lossless TIFF photograph to AVIF routinely produces files that are roughly 1–2% the size of the original — often smaller than the equivalent WebP by another 15–25%. A 300 MB flatbed scan becomes a 2 MB AVIF that is visually identical to the source. For archival images with scanned fine print, SciZone's PSNR/SSIM targeting keeps the text sharp.
16-bit, CMYK and LZW decoded transparently
Most TIFF converters choke on 16-bit per channel, CMYK color spaces, LZW compression, or legacy JPEG-in-TIFF files. SciZone decodes every TIFF variant through ImageMagick 7 — the same library that powers much of the professional imaging world — then hands the normalised 8-bit RGB to libavif.
Your ICC color profile follows along
TIFFs from calibrated scanners and prepress workflows carry embedded ICC color profiles (Adobe RGB, ProPhoto, device-specific CMYK profiles). SciZone extracts the profile during decoding and re-embeds it in the AVIF ColourInformationBox so color rendering stays faithful on calibrated displays. CMYK TIFFs are converted to sRGB first because AVIF is an RGB format.
TIFF vs AVIF at a glance
| Criterion | TIFF | WebP |
|---|---|---|
| Typical file size for scans | 100% (huge) | 0.5–2% |
| Bit depth | 8 / 16 / 32-bit | 8 / 10 / 12-bit (HDR) |
| Color spaces | RGB, CMYK, LAB, YCbCr | sRGB, wide-gamut with ICC |
| Lossless compression | LZW / ZIP / none | Yes |
| Multi-page / multi-frame | Yes | No (first page only) |
| Web browser support | Unsupported | ~95% (modern browsers) |
| Typical use case | Archival master | Web, email, galleries |
How to convert TIFF to AVIF
Four steps. Works with 16-bit, CMYK, LZW and multi-hundred-megabyte scans.
- 1
Drop your TIFF files
Drag single TIFFs, folders of scans, or entire archive exports onto the drop zone below. Extensions .tif, .tiff and .TIFF are all recognised.
- 2
Decoded by ImageMagick
The decoder runs in WebAssembly and handles 8-bit, 16-bit, CMYK, LZW, ZIP and JPEG-in-TIFF variants automatically. 16-bit channels are normalised to 8-bit for AVIF output; AVIF's optional 10/12-bit HDR mode is on the roadmap.
- 3
Adaptive AVIF quality search
For each image the engine targets PSNR ≥ 44.5 and SSIM ≥ 0.95. High-detail scans with fine text or line art get encoded at higher quality; flat regions get more aggressive AV1 compression.
- 4
Download the tiny AVIF ZIP
Expect the output ZIP to be 0.5–2% the size of the input TIFF set. Everything streams through your browser — even a 10 GB batch of scans never uploads anywhere.
AVIF Results
AVIF matches WebP quality (SSIM Δ < 0.005) while shipping ~45% smaller files on the same Excellent preset.
Typical AVIF savings
Measured on 24 diverse photos at matched perceived quality (SSIM ≥ 0.95)
TIFF to AVIF — Frequently Asked Questions
Will SciZone handle a 500 MB TIFF file for AVIF conversion?
Yes, assuming your browser has enough RAM. TIFFs up to several gigabytes have been tested in 64-bit browsers. The decoder streams tiles when possible; very large single-image TIFFs eventually hit the browser's per-tab memory limit — around 4 GB of working memory on most desktops. AVIF encoding itself is memory-heavier than WebP because the AV1 codec keeps more state, so we recommend converting huge TIFFs individually rather than in a large parallel batch.
Are 16-bit TIFF scans supported?
Yes. 16-bit per channel TIFFs are decoded at full precision. For AVIF output they're currently down-converted to 8-bit (full 10/12-bit HDR AVIF from 16-bit TIFF is on the roadmap). For archival workflows where you need 16-bit preserved, keep the original TIFF as a master and use AVIF only for distribution.
What about CMYK TIFFs from prepress workflows?
They're converted automatically. ImageMagick reads the CMYK data, applies the embedded ICC profile, and converts to sRGB. The resulting AVIF is tagged with the sRGB profile so it displays correctly on screens.
Does SciZone support multi-page TIFFs?
It decodes the first page of a multi-page TIFF. Full multi-page-to-AVIF-sequence conversion is on the roadmap but not yet enabled. For now, split your multi-page TIFF into individual files before dropping.
How much smaller will my TIFF archive become in AVIF?
For lossless-LZW photographic TIFFs, expect 98–99% reduction. For CMYK prepress TIFFs, expect 95–98%. For scans of text documents, expect 85–95%. SciZone reports the exact per-file savings after each run.
Is the ICC color profile preserved in AVIF?
Yes. The ICC profile is extracted during TIFF decoding and embedded inside the AVIF ColourInformationBox via libavif's avifImageSetProfileICC so calibrated displays render identical colors. If your TIFF uses a device-specific CMYK profile, it's first converted to sRGB because AVIF is an RGB format.
Can I convert a scanner's output folder in one go?
Yes. Flatbed scanners often produce hundreds of TIFFs in a single session. Drop the whole folder — SciZone parallelises the batch across your CPU cores and writes the output ZIP with the folder structure preserved. For very large TIFFs consider using WebP instead if encoding speed matters more than final size.
Is this safer than uploading my TIFF archive to an online converter?
Much safer. Archive TIFFs often contain sensitive material — medical scans, legal documents, unreleased artwork. SciZone never uploads the file contents; the conversion is 100% local. You can verify this by opening DevTools → Network and watching during a conversion run.
Why Choose SciZone?
We're not just another optimizer. We engineered a fundamentally better solution.
| Feature | SciZone (You're here) | Other Optimizers |
|---|---|---|
| CPU Utilization
How processing power is used
| True Multi-Threading Intelligently uses all CPU cores without overloading your system | Single-Threaded Uses only one CPU core, wastes available power |
| Quality Settings
How compression is optimized
| Unique Per Image Algorithm analyzes each photo and picks optimal settings | One-Size-Fits-All Same settings for every photo, inconsistent quality |
|
Metadata & Color Profiles
Preservation of image data
| Fully Preserved EXIF, color profiles, geolocation. Everything stays intact | Often Stripped Color profiles lost, metadata incomplete |
|
Quality-Size Balance
Optimization results | Perfect Balance Maximum compression with imperceptible quality loss | Inconsistent Either too large or noticeable quality loss |
The Bottom Line
Every photo is unique. Our intelligent algorithm understands this and analyzes each image individually to find the perfect balance between file size and quality. We utilize your computer's full power without overloading it, preserving every detail of your metadata and color profiles. Your files are smaller, faster, and absolutely perfect. 🎯