Readme
A small, fast and advanced TIFF / EXIF decoder and encoder. It is the main TIFF library for Photopea image editor. Try to open your TIFF file with Photopea to see, if UTIF.js can parse it.
Download and include the UTIF.js file in your code. If you're in NodeJS or otherwise using NPM, run:
npm install utif
UTIF.decode(buffer)buffer: ArrayBuffer containing TIFF or EXIF datawidth: the width of the imageheight: the height of the imagedata: decompressed pixel data of the imagetXYZ: other TIFF tagsTIFF files may have different number of channels and different color depth. The interpretation of data depends on many tags (see the TIFF 6 specification).
UTIF.toRGBA8(img)img: TIFF image object (returned by UTIF.decode())function imgLoaded(e) {
var pages = UTIF.decode(e.target.response);
var rgba = UTIF.toRGBA8(pages[0]); // Uint8Array with RGBA pixels
console.log(pages[0].width, pages[0].height, pages[0]);
}
var xhr = new XMLHttpRequest();
xhr.open("GET", "my_image.tif");
xhr.responseType = "arraybuffer";
xhr.onload = imgLoaded; xhr.send();
If you are not a programmer, you can use TIFF images directly inside the <img> element of HTML. Then, it is enough to call UTIF.replaceIMG() once at some point.
UTIF.replaceIMG()<body onload="UTIF.replaceIMG()">
...
<img src="image.tif" /> <img src="dog.tif" /> ...
And UTIF.js will do the rest. Internally, an Image elements will be replaced by a Canvas elements. The attributes "id", "class" and "style" will be copied from the original Image to the new Canvas. Use CSS to style such images.
You should not save images into TIFF format in the 21st century. Save them as PNG instead (e.g. using UPNG.js). If you still want to use TIFF format for some reason, here it is.
UTIF.encodeImage(rgba, w, h, metadata)rgba: ArrayBuffer containing RGBA pixel dataw: image widthh: image heightmetadata [optional]: IFD object (see below)UTIF.encode(ifds)ifds: array of IFDs (image file directories). An IFD is a JS object with properties "tXYZ" (where XYZ are TIFF tags)TIFF format sometimes uses Inflate algorithm for compression (but it is quite rare). Right now, UTIF.js calls Pako.js for the Inflate method. TIFF format sometimes uses JPEG compression (but it is quite rare). Right now, UTIF.js calls "JpegDecoder" constructor, which comes from pdf.js. You can find it "separated" from pdf.js in libraries such as jpg.js.
FAQs
Fast and advanced TIFF decoder
We found that utif demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
CISA launched a new project called Vulnrichment to enrich CVEs with details that help prioritize patching and mitigation efforts, as the NVD backlog of unenriched CVEs awaiting analysis surpasses 10,000.
Security News
Socket is joining forces with CISA and other industry leaders at the RSA Conference to sign the Secure by Design pledge, committing to uphold the highest security standards in our products.
Research
The Socket research team breaks down a sampling of malicious packages that download and execute files, among other suspicious behaviors, targeting the popular Discord platform.