TIFF to JPG Converter

About the TIFF to JPG Converter

Most browsers and phones cannot open TIFF files at all — this converter can, in any browser. Drop scans, faxes, multi-page TIFFs or 16-bit photos and every page is decoded on your device: CCITT Group 3 and Group 4 fax, LZW, ZIP (Deflate), PackBits and JPEG compression, black-and-white, greyscale, palette, RGB, CMYK, YCbCr and CIE L*a*b* pages, 1 to 32 bits per channel (also floating point), striped or tiled, and BigTIFF.

Check each page in the preview, choose the pages you want and save them as JPG, lossless PNG (black-and-white pages become tiny 1-bit PNGs) or one PDF per file with each page at its real size. Fax pages are turned the right way up and their pixels made square, so 204 × 98 dpi faxes no longer look squashed. Nothing is uploaded.

Common uses

• Opening a TIFF on a phone, Chromebook or work PC that has no program for it.
• Turning received faxes (eFax, fax-to-email, fax servers) into JPG or PDF to share.
• Splitting a multi-page TIFF from a scanner or document system into separate pages.
• Making web-ready JPGs from large print or archive TIFFs.

What it reads

Decoding follows Adobe’s TIFF Revision 6.0 specification:

• Compression: none, CCITT Huffman, Group 3 (1-D and 2-D) and Group 4 fax, LZW, Deflate/ZIP, PackBits, JPEG (also old-style JPEG, best effort) and ThunderScan; with the horizontal and floating-point predictors.
• Colour: black and white (either way round), greyscale, palette, RGB, CMYK, YCbCr (including subsampled data) and CIE / ICC L*a*b*, with associated or unassociated alpha.
• Depth: 1, 2, 4, 8, 12, 16 and 32 bits per channel, signed and unsigned integers, and 16-, 24-, 32- and 64-bit floating point.
• Layout: strips or tiles, chunky or separate planes, either byte order, classic TIFF and BigTIFF, and any number of pages. Reduced-resolution preview copies stored next to a page are skipped.

Decompression of the fax, LZW and JPEG data uses UTIF.js (MIT licence); Deflate uses fflate.

Colour and depth

Pages are saved with 8 bits per channel, the depth JPG and ordinary PNG viewers use; 16-bit samples are scaled to 8 bits (65,535 becomes 255). CMYK pages are converted with the simple ink formula, without a colour profile, so expect colours to differ somewhat from what a print-profile-aware program shows. **L*a*b*** pages use the white point the file states (D50 when it states none, as Adobe’s TIFF notes specify). Floating-point pages are shown as stored, 0 as black and 1 as white; values outside that range are stretched to fit, and the page says so.

Faxes and PDF

Fax machines scan 204 dots per inch across but only 98 (standard) or 196 (fine) down, so the pixels are not square. With Make fax pixels square the pages are stretched to the same resolution both ways, which makes text look right in any viewer; PDF pages get their physical size from the resolution, so a fax page comes out at the size of the paper it was sent from. Black-and-white pages go into the PDF as lossless 1-bit images; colour and greyscale pages as JPG at the quality you set.

Limitations

• Very large pages (above about 50 megapixels on computers, 16 on iPhone and iPad) are reduced by a whole factor so they fit in a browser tab; the page says when this happens.
• Colour profiles (ICC) are not applied; RGB pages are taken as sRGB.
• JPEG 2000, Zstandard, LZMA, WebP and JPEG XL compressed TIFFs, and camera RAW data, are not decoded — the page names the compression so you can re-save the file elsewhere.
• Layers in TIFF files saved by Photoshop are not read; the flattened image is.
• Files up to 1 GB, 50 files at a time.

Privacy

Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.