imgproxy v4

A fast and secure self-hosted image processing server

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Zain Sheikh· 4mo ago
Self-hosted, on-demand image optimization is a clean way to drop bloated pre-processing pipelines, and adding RAW format support in v4 is a nice touch. Does it handle AVIF output too?
Zain Sheikh· 4mo ago
Parallel source downloading plus an internal cache in v4 should really cut cold-start latency on on-demand processing, and keeping it fully self-hosted is a big plus — does the new RAW support cover most common camera formats out of the box?

imgproxy is a fast and secure standalone server for resizing, processing, and converting images. Built around speed, security, and simplicity, it handles massive image-processing workloads with ease. imgproxy replaces custom image-processing pipelines in your application and generates optimized images on demand — so you don’t need to pre-process and store multiple versions of the same image. With v4, imgproxy becomes faster, smarter, and more production-ready than ever. This release brings major improvements, including: * Better performance thanks to parallel source image downloading and processing * Internal cache for processed images * Support for digital cameras’ RAW formats * Image classification * Improved SVG minification …and much more! Check out the full release notes: https://github.com/imgproxy/imgproxy/releases/tag/v4.0.0 imgproxy is available in two versions: * Open source — fully open-source and free forever * Pro — with advanced features like video preview generation, object detection, image classification, and dedicated support Both versions are fully self-hosted, so you keep full control over your infrastructure and data. Drop us a line in the comments if you have any questions or feedback — we’d love to hear from you!

Open Source

imgproxy is a self-hosted server that resizes, processes, optimizes and secures images on the fly via URL parameters.

for: Backend engineers and DevOps teams needing on-demand image transformation.
pricing: freemium · free trial
license: Apache-2.0

imgproxy/imgproxy 11k 777Goupdated 12 days ago

v4.0.1712 days ago
v4.0.1614 days ago
v4.0.15a month ago

works withDockerLinux packagesAmazon S3Google Cloud StorageAzure Blob StoragePrometheusDatadogSentry

Key features

6 features of imgproxy v4

On-the-fly resizing & cropping — Resize, crop, fill and pad images dynamically through URL parameters.
Extensive format support — Handles JPEG, PNG, GIF, WebP, AVIF, JPEG XL, SVG, HEIC, TIFF and more.
Image optimization — Automatic format conversion, quality control, metadata stripping and PNG quantization.
Smart features — Smart crop, object detection, auto-quality by file size or SSIM, and best-format selection.
Security controls — URL signing, source-image size limits, SVG sanitization and HTTP-header authorization.
Observability & integrations — Exports metrics to Prometheus, OpenTelemetry, Datadog, New Relic and logs to Sentry, Honeybadger, etc.

Use cases

Generate responsive WebP/AVIF thumbnails for a product catalog on demand
Create video or PDF previews without storing extra files
Apply watermarks and branding to user-uploaded images in real time
Serve optimized images from S3, GCS or Azure Blob with automatic caching

imgproxy v4 vs alternatives

all alternatives →

	imgproxy v4	Frameright
Best for	Self-hosted on-the-fly image processing	Responsive image handling
Pricing	Freemium	Free
DevHunt upvotes	6	78
Launched	Jun 2026	Jan 2023

imgproxy v4 vs Frameright: Frameright focuses on responsive image behavior and container integration, while imgproxy provides full on-the-fly processing and optimization.