Are my TIFF files uploaded anywhere?

No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.

Is converting TIFF to JXL free?

Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.

Does converting TIFF to JXL lose quality?

JXL is a compressed format, so some data is discarded. At the default setting the difference is not visible; you can raise the quality setting if you need to be certain.

Do I need to install anything to open JXL files?

No installation is needed for the conversion itself — it runs in the browser you already have. Opening the JXL afterwards needs whatever software normally handles JPEG XL on your device.

TIFFtoJXL

Convert TIFF to JXL

Up to 3 files at once, 100 with Pro. Mixed formats are fine.

TIFF to JXL conversion is not running yet. This page describes what it will do; the TIFF conversions that work today are linked at the bottom.

What TIFF and JXL are for

The print and archiving standard. Lossless, multi-page capable, understood by every scanner.

The JPEG successor. Can repack existing JPGs 20% smaller without touching image quality.

How to convert TIFF to JXL

Drop your TIFF file onto this page, or click to pick one.
Choose JXL as the target. The conversion runs inside your browser — the file is never uploaded.
Download the finished JXL file.

TIFF vs JXL: what changes

TIFF compared with JXL
	TIFF	JXL
Full name	Tagged Image File Format	JPEG XL
File extension	.tif, .tiff	.jxl
Media type	image/tiff	image/jxl
Compression	Lossless — nothing is discarded	Either, depending on the setting

Quality: Some quality is given up for a smaller file. At the default setting the difference is hard to see.
Where it runs: This conversion is not available yet. The page describes what it will do once the engine ships.

TIFF to JXL: common questions

Are my TIFF files uploaded anywhere?: No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.
Is converting TIFF to JXL free?: Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.
Does converting TIFF to JXL lose quality?: JXL is a compressed format, so some data is discarded. At the default setting the difference is not visible; you can raise the quality setting if you need to be certain.
Do I need to install anything to open JXL files?: No installation is needed for the conversion itself — it runs in the browser you already have. Opening the JXL afterwards needs whatever software normally handles JPEG XL on your device.