TIFF to JP2 Converter
Convert TIFF to JP2 in your browser. TIFF files usually come from scanners, print and publishing workflows, photo archives and tethered camera capture; JP2 is the better fit for archival masters and specialist imaging. You get a lossless JPEG 2000 (.jp2) using the reversible 5/3 wavelet. Nothing is uploaded.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
TIFF expected · other image formats also work
How to use TIFF to JP2
- 1
Add your TIFF files: drop them here, choose them, or paste from the clipboard.
- 2
There is nothing to tune: the JP2 is written losslessly. Resizing and rotating are under More options if you need them.
- 3
Click Convert. Each file is decoded and encoded in a background thread on this device.
- 4
Download the .jp2 files one at a time or together as a ZIP.
Why use Aback Images for tiff to jp2
Where the JP2 goes next
JP2 opens in macOS Preview, GIMP, IrfanView, XnView, ImageMagick and the OpenJPEG tools.
JP2 next to TIFF
Both sides are lossless, so the size depends on how well the JP2 encoder handles this picture compared with the TIFF's none, LZW, PackBits, Deflate or JPEG, chosen per file.
Written without a lossy pass
The JP2 is written losslessly, so the pixels decoded from the TIFF arrive unchanged, apart from precision beyond 8 bits per channel.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
TIFF vs JP2
What changes from TIFF to JP2
Encoding: the TIFF uses none, LZW, PackBits, Deflate or JPEG, chosen per file; JP2 uses wavelet coding: reversible 5/3 for lossless files, irreversible 9/7 for lossy ones, and the download is a lossless JPEG 2000 (.jp2) using the reversible 5/3 wavelet.
Bit depth: 1 to 16 bits per channel, or 32-bit floating point in the TIFF; JP2 allows up to 16 bits per channel is common, more is possible, and the JP2 written here has 8 bits per channel. 16-bit and floating-point TIFFs are reduced to 8 bits per channel.
Colour: RGB, CMYK, Lab, greyscale or palette, often with an ICC profile in the TIFF; JP2 supports sRGB, greyscale, YCC or a space described by an ICC profile, written here as 8-bit sRGB.
Transparency: the TIFF stores it as an extra sample declared in the ExtraSamples tag; the JP2 keeps it as an extra component flagged as opacity.
Other images: the TIFF can hold several pages, each in its own image file directory; only the main image is converted.
Metadata: the TIFF can carry EXIF, XMP, IPTC and ICC, all stored as tags; JP2 can carry XML, ICC and resolution boxes, but nothing is copied across.
About TIFF
TIFF is the professional archive and print format. It can hold multiple pages, high bit depths and lossless data, and is common in scanning, publishing and GIS.
A TIFF begins with 'II' or 'MM' for the byte order and the number 42, then an offset to the first image file directory (IFD): a table of tags giving the size, compression, colour model and the location of the strips or tiles of pixels. Each further page is another IFD.
TIFF files usually come from scanners, print and publishing workflows, photo archives and tethered camera capture.
About JP2
JPEG 2000 is a wavelet-based format that can be truly lossless or lossy, handles very high bit depths and huge images, and is used where long-term fidelity matters: archives, medicine, satellites and digital cinema.
A .jp2 file is a box structure: a 12-byte signature box, an 'ftyp' box, a 'jp2h' header box with the size and colour specification, then the 'jp2c' box holding the codestream, which begins with FF 4F FF 51.
When converting TIFF to JP2 makes sense
JP2 is the better choice for archival masters and specialist imaging, while TIFF suits printing, scanning and archival masters.
JP2 strengths: True lossless mode; High bit depths and very large images; Standardised for archives and digital cinema. Drawbacks to weigh: Browsers do not display it; Slow to encode and decode; Patchy support in everyday apps.
Limitations
- Only the first page of a multi-page TIFF is converted; split the file first if you need every page.
- CMYK TIFFs from print workflows are converted to RGB, which changes how a print shop's colours are described.
- Lossless JPEG 2000 is larger than a lossy one, but usually smaller than an uncompressed TIFF of the same pixels.
- No current browser displays JP2 by default; archive and imaging software opens it.
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Frequently asked questions
Does converting TIFF to JP2 lose quality?
JP2 is written losslessly, so the pixels are stored exactly as decoded. 16-bit and floating-point TIFFs are reduced to 8 bits per channel. Not carried over: any several pages.
Is transparency kept in the JP2?
Yes. TIFF stores it as an extra sample declared in the ExtraSamples tag, and the JP2 is written with an alpha channel, so transparent areas stay transparent.
Is the JPEG 2000 file lossless?
Yes. It is written with JPEG 2000's reversible 5/3 wavelet, so decoding it gives back exactly the pixels that went in. The trade-off is size: a lossless JP2 is larger than a lossy one, though usually smaller than an uncompressed TIFF.
Which apps open JP2 files?
MacOS Preview, GIMP, IrfanView, XnView, ImageMagick and the OpenJPEG tools. It does not open in web browsers by default.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.