Java/ImageIO getting image dimensions without reading the entire file?

try(ImageInputStream in = ImageIO.createImageInputStream(resourceFile)){ final Iterator<ImageReader> readers = ImageIO.getImageReaders(in); if (readers.hasNext()) { ImageReader reader =; try { reader.setInput(in); return new Dimension(reader.getWidth(0), reader.getHeight(0)); } finally { reader.dispose(); } } } Thanks to sfussenegger for the suggestion

How to store(bitmap image) and retrieve image from sqlite database in android? [closed]

Setting Up the database public class DatabaseHelper extends SQLiteOpenHelper { // Database Version private static final int DATABASE_VERSION = 1; // Database Name private static final String DATABASE_NAME = “database_name”; // Table Names private static final String DB_TABLE = “table_image”; // column names private static final String KEY_NAME = “image_name”; private static final String KEY_IMAGE …

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How do you base-64 encode a PNG image for use in a data-uri in a CSS file?

This should do it in Python: import base64 binary_fc = open(filepath, ‘rb’).read() # fc aka file_content base64_utf8_str = base64.b64encode(binary_fc).decode(‘utf-8’) ext = filepath.split(‘.’)[-1] dataurl = f’data:image/{ext};base64,{base64_utf8_str}’ Thanks to @cnst comment, we need the prefix data:image/{ext};base64, Thanks to @ramazanpolat answer, we need the decode(‘utf-8’)

smallest filesize for transparent single pixel image

First of all, there is honestly no valid reason to use spacer GIFs in 2020 and beyond (unless you’re working with retro style websites), so this post is mostly just for the curious. Anyway let’s begin: The smallest valid transparent GIF is 35 bytes. data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEAAAAALAAAAAABAAEAAAIBAAA= 47 49 46 38 39 61 01 00 01 00 …

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How does one use the onerror attribute of an img element

This works: <img src=”” onerror=”this.onerror=null;this.src=””;” > Live demo: As Nikola pointed out in the comment below, in case the backup URL is invalid as well, some browsers will trigger the “error” event again which will result in an infinite loop. We can guard against this by simply nullifying the “error” handler via this.onerror=null;.

What is the difference between ImageMagick and GraphicsMagick?

As with many things in life, different people have different ideas about what is best. If you ask a landscape photographer who wanders around in the rain in Scotland’s mountains which is the best camera in the world, he’s going to tell you a light-weight, weather-sealed camera. Ask a studio photographer, and he’ll tell you …

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how to make the blur effect with react-native?

Now you can do this without any library using the prop: blurRadius. E.g <Image style={styles.img} resizeMode=”cover” source={imgSrc} blurRadius={1} /> Explanation: the number(1) means the amount of blur you want to apply on the image, the higher the number, the blurrier the image. Unfortunately, this doesn’t work on Android yet (RN 0.40.0). Nevertheless, it could be …

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How to load Image from drawable in Jetpack compose?

You can use the painterResource function: Image(painterResource(R.drawable.ic_xxxx),”content description”) The resources with the given id must point to either fully rasterized images (ex. PNG or JPG files) or VectorDrawable xml assets. It means that this method can load either an instance of BitmapPainter or VectorPainter for ImageBitmap based assets or vector based assets respectively. Example: Card( …

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