CONVERT
TIFF → ICO
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Fast, secure TIFF to ICO conversion. No registration required.
Setup: TIFF is the archival multi-page master format used in scanning, print and document pipelines. Goal: an interchangeable ICO. A TIFF to ICO conversion is almost always about making an image land cleanly in another piece of software. TIFF Image is well-suited to its original niche, but ICO Icon opens on more platforms or fits better into a publishing pipeline. Upload a TIFF file above, pick any quality knobs, and download a ready-to-use ICO. Context: TIFF is the archival multi-page master format used in scanning, print and document pipelines. ICO is the Windows icon container with multiple resolutions packed into one file.
TIFF Image
Source formatTIFF is a flexible, high-quality image format widely used in publishing, printing, and professional photography. It supports multiple compression methods and color spaces including CMYK.
ICO Icon
Target formatICO is the icon file format used for favicons and Windows application icons. A single ICO file can contain multiple image sizes and color depths for different display contexts.
Why convert TIFF to ICO
Converting keeps the picture recognisable end-to-end while changing the container that ships it. ICO typically wins on one of three fronts: broader software support, smaller files for the same visual quality, or features like transparency that TIFF cannot express. The conversion itself is fast because both sides are raster formats.
HOW TO CONVERT
TIFF → ICO
Upload your TIFF
Start by dropping the TIFF onto the uploader. Files up to 25 MB go through on the free tier without registration; paid plans go up to 2 GB.
Conversion happens server-side
Our imagemagick-based pipeline reads the TIFF pixel grid, preserves resolution and colour profile, and encodes a clean ICO.
Grab the result
A download button appears as soon as the ICO is ready. Save locally or share the short-lived URL.
Common Use Cases
Share across platforms
Send ICO files to anyone without worrying about whether they have the right software for TIFF.
Embed in documents
Drop ICO output into Word, Google Docs, PowerPoint, Notion or a website without conversion warnings.
Optimize size
ICO often produces smaller files than TIFF for web, email and storage.
Archive & future-proof
Store in a widely-supported format that will still open on future operating systems without legacy plugins.
TIFF vs ICO — Strengths and limitations
What each format does best, and where it falls short.
TIFF Strengths
- Lossless by default — no generation loss on successive edits and saves.
- Supports any bit depth (1 to 32 bits per channel), any color model, any number of channels.
- Extensible tag system means vendor-specific data survives alongside standard tags.
- Multi-page containers are perfect for scanned documents, faxes, and DICOM-like stacks.
- Industry-standard for archival, museums, scientific imaging, and high-end print prepress.
Limitations
- File sizes are huge compared to JPEG/WebP/AVIF — often 10-30× larger.
- Not a web format — no browser displays TIFF natively.
- Ambiguous spec areas mean some TIFFs only open correctly in the tool that created them.
ICO Strengths
- Multi-resolution: one file, many sizes, OS picks the right one.
- Universal favicon support in every browser since IE5.
- Supports transparency (1-bit since 1985, full alpha since XP).
- Tiny file size — an entire favicon pack typically fits in under 15 KB.
- No licensing or patent concerns — fully in the public domain spec-wise.
Limitations
- Cannot compress continuous-tone images efficiently — use PNG or WebP for photos.
- Format is essentially frozen in 1999 — no HDR, no wide gamut, no modern features.
- Maximum image dimension is 256×256 px (inside an ICO container).
TIFF vs ICO — Technical specifications
Side-by-side comparison of the technical details.
TIFF
- MIME type
- image/tiff
- Extensions
- .tif, .tiff
- Standard
- TIFF 6.0 (1992); BigTIFF extension for 64-bit offsets
- Max file size
- 4 GB (TIFF); 2^64 bytes (BigTIFF)
- Compression options
- None, LZW, Deflate, JPEG, CCITT G3/G4, PackBits, JBIG
ICO
- MIME type
- image/vnd.microsoft.icon
- Max resolutions per file
- 65 535 images
- Max single image size
- 256×256 px
- Color depths
- 1, 4, 8, 24, 32 bits per pixel
- Compression
- Uncompressed bitmap or embedded PNG (Vista+)
| Specification | TIFF | ICO |
|---|---|---|
| MIME type | image/tiff | image/vnd.microsoft.icon |
| Extensions | .tif, .tiff | — |
| Standard | TIFF 6.0 (1992); BigTIFF extension for 64-bit offsets | — |
| Max file size | 4 GB (TIFF); 2^64 bytes (BigTIFF) | — |
| Compression options | None, LZW, Deflate, JPEG, CCITT G3/G4, PackBits, JBIG | — |
| Max resolutions per file | — | 65 535 images |
| Max single image size | — | 256×256 px |
| Color depths | — | 1, 4, 8, 24, 32 bits per pixel |
| Compression | — | Uncompressed bitmap or embedded PNG (Vista+) |
TIFF vs ICO — Typical file sizes
Approximate file sizes for common scenarios.
TIFF
- Scanned A4 page (300 dpi, B&W) 100-300 KB
- Scanned A4 page (600 dpi, color) 15-40 MB
- Print-quality magazine photo 30-150 MB
- Satellite GeoTIFF tile 50 MB - 5 GB
ICO
- Classic favicon (16×16 only) < 2 KB
- Multi-size favicon pack (16/32/48/256) 5-15 KB
- Full Windows app icon set 20-100 KB
Quality & Compatibility
Converting keeps resolution, aspect ratio and colour profile identical to the source. Metadata (EXIF, XMP) transfers where ICO supports it; otherwise it is dropped. If the TIFF contained an alpha channel and ICO does not support transparency, the background is flattened to white by default.
Tips for Best Results
- When uploading to Retina / high-DPI contexts, render the ICO at 2× the CSS pixel size; the crispness gap over 1× is noticeable on modern screens.
- Strip EXIF metadata from the ICO before publishing if the TIFF came from a phone camera — it often contains GPS coordinates and device IDs.
- If the TIFF is a screenshot of text or UI, prefer a lossless ICO target to avoid the JPEG-style ringing around glyph edges.
Frequently Asked Questions
It depends on the codecs involved. If both TIFF and ICO are lossy, the pixels are re-encoded and a small amount of detail is discarded — invisible at default quality settings on photographs. If ICO is lossless (PNG, TIFF, BMP) the output keeps every pixel of the decoded TIFF exactly, but cannot recover detail that TIFF had already compressed away.
Often yes, especially when ICO is lossless. TIFF tuned for efficient web delivery will usually produce smaller files than ICO's default settings. If file size matters, drop the quality in Advanced or pick a more compressed target format instead.
KaijuConverter uploads over HTTPS, processes the image in an isolated container and deletes both the source and the output within two hours. No account is required, file contents are never logged, and we do not use uploads to train any model. For confidential material, the paid plan includes a data-processing agreement.
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Read guideSecure & Private Conversion
Your files are encrypted during transfer, processed in isolated containers, and automatically deleted within 60 minutes. We never read, share, or store your data.