JavaScript-Load-Image

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JavaScript-Load-Image is an open-source JavaScript library for loading and transforming image files. It can retrieve optionally scaled, cropped, or rotated HTML img or canvas elements, and parses image metadata to extract IPTC and Exif tags.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is JavaScript-Load-Image?

JavaScript-Load-Image is a robust JavaScript library designed for efficient image handling within web applications. It allows developers to load images from various sources, including File and Blob objects or directly via URL. A core feature is its ability to transform images, returning them as optionally scaled, cropped, or rotated HTML img or canvas elements. Beyond basic transformations, the library provides advanced methods for parsing image metadata, enabling the extraction of IPTC and Exif tags, as well as embedded thumbnail images. It also supports overwriting Exif Orientation values and restoring complete image headers after resizing, making it a comprehensive solution for image processing needs.

Best used for

Ideal for web developers who need to efficiently handle image uploads and display them in various formats, process images for web optimization, and extract embedded metadata. Especially valuable for applications requiring client-side image manipulation and display.

Common actions

load images

transform images

scale images

parse image metadata

extract Exif data

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Capabilities

Key features

Load images from File/Blob/URL
Scale images
Crop images
Rotate images
Parse image metadata
Extract Exif/IPTC tags
Restore image header

Target Audience

web developersfrontend engineersfull-stack developers

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What are the core dependencies for JavaScript-Load-Image?

The JavaScript-Load-Image library has zero core dependencies. However, it benefits from polyfills like blueimp-canvas-to-blob for browsers without native HTMLCanvasElement.toBlob support and promise-polyfill for older browsers lacking native Promise support, enabling full feature utilization.

How does JavaScript-Load-Image handle image orientation?

The library can automatically correct image orientation based on Exif metadata. It provides methods to parse Exif tags, overwrite the Exif Orientation value, and restore the complete image header after resizing, ensuring images are displayed correctly regardless of their original orientation.

Can I use JavaScript-Load-Image with both callback and Promise-based APIs?

Yes, JavaScript-Load-Image supports both callback-style and Promise-based APIs. The callback function is passed the image element and metadata, while the Promise-based API resolves with an object containing the image and its original dimensions, offering flexibility for different development styles.

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