TIF to JPG: Converting Professional and Scanned Images for Everyday Use
TIFF (Tagged Image File Format) was designed for professional image work. It stores images losslessly with full color depth, supports multiple pages in a single file, and has been the standard format for print production, archival scanning, and professional photography since the late 1980s. Adobe Photoshop, InDesign, and professional scanners all output TIFF by default. That quality comes with a cost: a single scanned document page might be 10–30 MB as a TIFF, and a high-resolution photograph from a DSLR can reach 80–100 MB.
TIFF is also essentially invisible to the web. Browsers don't display .tif files natively. Email clients won't show TIFF attachments inline. If you scan a document and send the TIFF to someone, most people won't be able to open it without specialized software. Converting tif to jpg makes the image universally accessible at a fraction of the file size — typically 5–20x smaller depending on image content and quality setting.
Why Browser-Based TIFF Conversion Is Tricky (and How This Works)
TIFF is a container format that supports multiple compression types internally: uncompressed, LZW, PackBits, CCITT, ZIP, and others. Most image tools handle the common ones but fail on less standard variants. Browser support for TIFF is near zero — you can't just throw a .tif file at a canvas element and have it work.
This tool uses UTIF.js, an open-source JavaScript library that implements a TIFF decoder entirely in the browser. UTIF reads the TIFF file's binary data, identifies the compression method, decodes the image data to raw RGBA pixel values, and renders it to a canvas element. From there, the canvas exports to JPG at your chosen quality setting. The whole process happens in your browser — your TIFF files are never uploaded to a server at any point.
UTIF.js handles uncompressed, LZW, and PackBits compression reliably. Some unusual TIFF variants — certain JPEG-in-TIFF encodings, JBIG compression, or TIFF files with non-standard color spaces like CMYK or LAB — may not decode correctly. Most TIFFs from scanners, cameras, and standard professional software fall into the supported category.
File Size: What to Expect
A 10 MB TIFF will typically become a 1–2 MB JPG at 90% quality. A 40 MB scanned document page might compress to 2–5 MB. The exact ratio depends on image complexity: a scanned photograph with fine detail compresses less aggressively than a mostly-white document page with black text.
At 85% quality, the visual difference from the TIFF original is imperceptible for photographs. At 75%, some fine detail softening may appear in high-detail areas like hair, text, or intricate patterns. For document scanning — contracts, receipts, forms — 80–85% quality gives readable, reasonably sized output. For professional photography being shared as a proof or reference image rather than a print master, 90% quality preserves enough detail for client review.
If you need to push sizes down further after converting, the image compressor can reduce a JPG significantly beyond what the quality slider achieves here. And if you need to resize the converted image to specific pixel dimensions for a platform requirement, the image resizer handles that with aspect ratio lock.
Multi-Page TIFFs
Multi-page TIFF files — common from document scanners that sweep multiple pages into a single file — are partially supported. This tool exports the first page as a JPG. Pages two through N are not extracted. If you need all pages converted, you'll need either Photoshop (File > Export > Layers to Files) or a command-line tool like ImageMagick running convert input.tif output_%d.jpg which writes each page as a numbered JPG.
For single-page TIFFs from cameras, flatbed scanners, or exported from design applications, this tool handles everything completely.
TIFF vs JPG for Your Use Case
Keep the TIFF for archival storage and print production. Convert to JPG for everything else: web use, email, client delivery, social media, platform uploads. This is standard professional workflow — maintain a master TIFF archive, distribute as JPG. The TIFF preserves every bit of quality for future use, while the JPG is the practical working copy that moves around without causing file size headaches.
For medical imaging and geospatial work, TIFFs often contain specialized metadata (DICOM data or GeoTIFF coordinates) that JPG can't store. Converting those to JPG strips that metadata. If you need to share the image visually and don't need the embedded data, that's fine. If the metadata matters, keep the TIFF and share it with whoever needs the full file. If you regularly work with PNG files alongside TIFFs, the same logic applies — PNG for web graphics that need transparency, JPG for photographic distribution.
What "Flattened Composite" Means for TIFFs
Some TIFFs from Photoshop contain layer data embedded alongside a flattened composite image. UTIF.js renders the flattened composite — the merged result of all layers as they appear in the final image. This is correct behavior for conversion purposes: you get the finished image, not raw layer data. If you need individual layer access, you'll need to open the TIFF in Photoshop first.