Built for Developers: Image Upload API

Enjoy a scalable REST API for uploading, hosting, and processing images — with zero setup.

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Example Image URL using the Image Upload API

Upload, process & serve images

Bytescale's real-time image upload API is designed for developers that need a fast and scalable way to store, process, and host images on-demand.

  • Images hosted on our blazingly-fast CDN.
  • Image resizing, cropping, converting, and more.
  • Simple API, SDKs and documentation.
Example of using the Image Upload API

Real-time image processing

Transform images by appending "URL slugs" to your uploaded images, and have the result returned in real-time.

  • Simple URL commands to process your images.
  • Images typically processed in under a second.
  • Near-instant subsequent requests (via perma-cache).
Resize Uploaded Images via API

Resize, crop, convert & optimize

Our image processing preserves color spaces, ICC profiles, alpha transparency channels, and more... while keeping file size to a minimum.

  • Intelligent AI-based cropping
  • Convert HEIC, HEIF, RAW, WEBP, JPEG, and more
  • Smart compression ensures optimal image size & quality
Image Processing & Optimization API

Extract metadata & keywords

Extract author information, keywords & metadata embedded within your images as parsable JSON.

  • Extract EXIF metadata (camera, resolution, etc.)
  • Extract IPTC metadata (keywords, author, license, etc.)
  • Retrieve as simple, easy-to-parse JSON.
Extract image keywords & metadata API

Worldwide CDN coverage

Never sacrifice performance: our CDN ensures high-speed downloads for your users, no matter where they are.

  • Pre-integrated: no setup required.
  • Over 600 points of presence.
  • Covers 90+ cities across 47 countries.
Image Hosting API

Authorize uploads & downloads

Optionally authorize all uploads and downloads via your app's existing security layer using JWTs.

  • Authorize all uploads and downloads.
  • Generate JWTs from your API for per-user access.
  • Uses your app's existing security layer.
Authenticated URLs

Monitor traffic & storage

Beautiful dashboards to reveal bandwidth and storage usage in clear and simple terms.

  • Analyze monthly & daily usage patterns.
  • Gain insights by identifying trends.
  • Identify busy and quiet periods.
BrowserBytescale Dashboard

Everything you need to handle
images in your application

Core Features

Image Resizing

Resize and intelligently crop images with our on-demand API. Supports large images (1,000MP).

Image Conversion

Convert from PDF, SVG, HEIC, and more to web-safe image formats such as JPG and WebP.

Image Optimization

Optimize images using the latest image compression technology, including WebP, AVIF, and more.

Image Watermarking

Watermark images with repeating text, custom fonts, and even overlay other images.

Smart Cropping

Automatically crop images by allowing our API decide the best point of interest for your image.

CDN / Proxy Support

Optionally add existing HTTP endpoints as image sources to pull and process existing content.

Image Metadata

Extract metadata, such as dimensions, to make decisions in your app based on the user's image.

Simple Upload API

Upload images with POST requests or our SDKs: our documentation is clear and simple, and includes examples with your API key.

Simple Image API

Benefit from an easy-to-use URL API to process your uploaded images and return in web-optimized formats, such as WebP and AVIF.

Pro Features

Custom CNAME

Use a custom CNAME for your image URLs to strengthen your company's brand.

External Storage

Integrate external storage: AWS S3, Cloudflare R2, DigitalOcean Spaces, Google Storage & HTTP.

Authorized Access

Bytescale allows you to control access to your images via your API through JWT access tokens.


Bytescale offers a Content Ingestion Network (CIN) for image upload traffic.

Team Support

Invite your team to manage and monitor your organization's account.

Upload API docs

Upload images with our APIs, SDKs, and widgets. S3 buckets supported.

Read the Docs
Upload API docs

Image API docs

Optimize and process your images with simple URL query parameters:

Read the Docs
Image Processing API Docs
Get Started

Ready to upload
& process images?

Get Started

Upload, process, and host your first image in as little as 60 seconds.

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