# tiff.js

**Repository Path**: rgbitx/tiff.js

## Basic Information

- **Project Name**: tiff.js
- **Description**: 加载tif图......
- **Primary Language**: Unknown
- **License**: Zlib
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 1
- **Forks**: 0
- **Created**: 2022-05-20
- **Last Updated**: 2024-08-01

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# tiff.js

tiff.js is a port of the LibTIFF by compiling the LibTIFF C code with Emscripten.

## [Demo](http://seikichi.github.io/tiff.js/)

- [view TIFF files](http://seikichi.github.io/tiff.js/basic.html)
- [view a TIFF file using a web worker](http://seikichi.github.io/tiff.js/worker.html)
- [view a multipage TIFF file](http://seikichi.github.io/tiff.js/multipage.html)
- [view your TIFF file](http://seikichi.github.io/tiff.js/upload.html)

## Usage

### Browser

Download tiff.min.js and load the script by yourself:

```js
var xhr = new XMLHttpRequest();
xhr.responseType = 'arraybuffer';
xhr.open('GET', "url/of/a/tiff/image/file.tiff");
xhr.onload = function (e) {
  var tiff = new Tiff({buffer: xhr.response});
  var canvas = tiff.toCanvas();
  document.body.append(canvas);
};
xhr.send();
```

### Node.js

```sh
$ npm install tiff.js
```

Example

```js
// Usage: node this-file.js input.tiff
var Tiff = require('tiff.js');
var fs = require('fs');

var filename = process.argv[2];
var input = fs.readFileSync(filename);
var image = new Tiff({ buffer: input });
console.log(filename + ': width = ' + image.width() + ', height = ' + image.height());
```

## API

see tiff.d.ts

## Note

- ~~This library does not support JPEG-based compressed TIFF files~~
  - Fixed by [Tetedeiench](https://github.com/seikichi/tiff.js/issues/15#issuecomment-257103842)
- When you load large tiff file, you will see the error message "Cannot enlarge memory arrays in asm.js"
  - in such case, please call 'Tiff.initialize({TOTAL_MEMORY: ... })' before you create a Tiff instance
- This JavaScript library uses only some parts of the LibTIFF features
  - To be more precise, I use following functions only
  - TIFFOpen, TIFFClose, TIFFGetField, TIFFReadRGBAImage, TIFFSetDirectory, TIFFCurrentDirectory, TIFFReadDirectory

## Alternatives

- [photopea/UTIF.js](https://github.com/photopea/UTIF.js)
- [image-js/tiff](https://github.com/image-js/tiff)

## License

The LibTIFF is LibTIFF Software License, zlib and additional code are zlib License.