What is Image Foundry?

Image Foundry is an open-source, real-time image CDN that resizes, optimizes, and delivers images on-the-fly via URL parameters. It is a drop-in replacement for Imgix and ImageBoss.

Is there a free tier?

Yes — Image Foundry includes a generous free tier with no credit card required. You can also self-host it entirely for free under the MIT license.

Which storage backends are supported?

Image Foundry supports Amazon S3, Google Cloud Storage, Azure Blob Storage, Cloudflare R2, DigitalOcean Spaces, Wasabi, Backblaze B2, and HTTP web proxies.

Can I use my own domain?

Yes — add a CNAME record pointing to Image Foundry, and SSL certificates are provisioned automatically.

How does pricing work?

Image Foundry offers three tiers: a free Starter plan, a Pro plan for growing teams, and a Scale plan for high-volume use. Annual billing saves 20%.

Image CDN
That Just Works

Real-time image resizing, optimization, and delivery. A drop-in replacement for Imgix and ImageBoss.

Get Started Free Read the Docs

WebP & AVIF Smart Crop S3 / GCS / Azure Cloudflare CDN Open Source

Everything You Need

⚡

Real-time Transformations

Resize, crop, filter, and convert images on-the-fly via URL parameters. Powered by libvips for blazing speed.

🌐

Global CDN

Cloudflare CDN integration out of the box. Pay zero bandwidth costs — only compute for the first request.

🔄

Drop-in Replacement

Compatible with both Imgix (query params) and ImageBoss (path-based) URL formats. Migrate in minutes.

🪣

Any Storage Backend

Connect S3, Google Cloud Storage, Azure Blob, or HTTP proxies as image sources.

🔐

Signed URLs

HMAC SHA-256 URL signing to prevent unauthorized transformations. Per-source or per-tenant secrets.

📊

Usage Analytics

Track transformations, bandwidth, and cache hit rates per tenant with built-in analytics.

🎨

Rich Filters

Blur, sharpen, grayscale, gamma, watermarks, text overlays — everything you need in one platform.

🌍

Custom Domains

Serve images from your own domain with automatic SSL. Just add a CNAME record.

Two URL Styles, One Platform

Choose the style that works for your app — or use both.

Imgix Style (Subdomain + Query Params)

https://myapp.imagefoundry.io/photos/hero.jpg?w=800&h=600&fit=crop&auto=format

ImageBoss Style (Subroute + Path Segments)

https://img.imagefoundry.io/myapp/cover/800x600/format:auto/photos/hero.jpg

Custom Domain

https://img.yourdomain.com/cover/800x600/photos/hero.jpg

Feature Comparison

Feature	Imgix	ImageBoss	Image Foundry
Resize & Crop	✓	✓	✓
Smart Crop (faces, attention)	✓	✓	✓
Focal Point Crop	✓	✓	✓
Auto Format (WebP/AVIF)	✓	✓	✓
Quality Control	✓	✓	✓
DPR / Retina Support	✓	✓	✓
Blur / Sharpen	✓	✓	✓
Grayscale	✓	✓	✓
Watermark Overlay	✓	✓	✓
Text Overlay	✓	✓	✓
Signed URLs (HMAC)	✓	✓	✓
S3 Sources	✓	✓	✓
GCS Sources	✓	✓	✓
Azure Blob Sources	✓	✓	✓
Query-Param URLs	✓	✗	✓
Path-Based URLs	✗	✓	✓
CDN Included	✓	✓	✓
Custom Domains	✓	✓	✓
REST API	✓	✓	✓
Dashboard	✓	✓	✓
Cache Purge API	✓	✓	✓
Usage Analytics	✓	✓	✓
Open Source	✗	✗	✓
Gamma / Linear Filters	✓	✓	✓
Extract Region	✓	✓	✓

Detailed imgix Comparison → Detailed ImageBoss Comparison → Detailed Cloudflare Comparison → Detailed Cloudinary Comparison → Detailed ImageKit Comparison → Detailed Thumbor Comparison → Detailed Sirv Comparison → Detailed Uploadcare Comparison →

Try It Live

Experiment with transformations in real-time. Every change updates the URL and image instantly.

Platform

Size

Width

Height

Fit Mode

Crop Mode

Quality: 80

Blur: 0

Sharpen: 0

Grayscale Enable grayscale

Output Format

Rotation: 0°

Flip

/foundry-imgix/imgix-example.jpg?w=600&h=400

Image CDNThat Just Works