imgproxy is a fast and secure standalone server for resizing, processing, and converting images on the fly.

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🚀 Overview

imgproxy is a self-hosted image-processing server that allows you to resize, crop, convert, and optimize images dynamically via simple URLs, without the need for third-party SaaS services or storing multiple thumbnails.

It solves the problems of high costs and unpredictable bills from cloud image processors, privacy concerns from sending images to external services, and the performance overhead of in-app image manipulation. By running on your own infrastructure, imgproxy keeps full control over your images while delivering blazing-fast processing powered by libvips.

Built for developers and teams at companies like Medium, Dribbble, Substack, Miro, Photobucket, eBay, and others who process millions of images daily, it was created to provide a simple, secure, and scalable alternative using best-in-class open-source image processing libraries. The team behind it has over 15 years of experience and focuses on speed, security, and minimal configuration.

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✨ Key Features

• Resizing, cropping (including smart cropping), rotating, flipping, and watermarking images with support for formats like JPEG, PNG, GIF, WebP, AVIF, JPEG XL.
• Optimization features like metadata stripping, color profile removal, PNG quantization, and auto-quality adjustment by file size.
• Security measures including URL signing to prevent DoS attacks, image bomb protection via dimension checks, source URL whitelisting, and SVG sanitization.
• High performance with low memory usage thanks to libvips; benchmarks show it outperforming other OSS servers.
• Pro version adds advanced features like video/PDF previews, object detection, SSIM-based quality, best format selection, and more.

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🛠 Tech Stack

• Backend: Go (primary language), libvips (image processing library)
• Deployment: Docker (recommended), supports Kubernetes via Helm chart
• Other: Supports cloud storage like AWS S3, GCP; monitoring with Sentry/Honeybadger
• No database or auth layer needed; stateless HTTP server

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👥 Who Is This For?

This project is useful for:

• Developers who want to offload image processing from their apps to a dedicated, self-hosted service
• Teams looking for cost-effective, secure alternatives to SaaS image processors like Cloudinary or Imgix
• Indie makers and companies building image-heavy sites like e-commerce, media platforms, design tools, or blogs

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📸 Screenshots / Demo

• Live demo: https://demo.imgproxy.net/
• GitHub: https://github.com/imgproxy/imgproxy

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🔥 Project Status

• 🟢 Actively building

Last updated: 2026-03-24

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❓ FAQ

Is this project free?

Open Source (MIT license) for core features; Pro version is paid with subscriptions (early access discounts available). (Explain briefly: Self-host the OSS version at no cost; Pro unlocks advanced features via subscription.)

Is the source code available?

Yes — https://github.com/imgproxy/imgproxy (10.5k stars, 731 forks)

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Can I contribute?

Yes — report issues, submit PRs via GitHub. Follow contributing guidelines, use pre-commit hooks, and check SECURITY.md for vulnerabilities. Community contributions welcome!

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📬 Contact & Links

• Website: https://imgproxy.net
• GitHub: https://github.com/imgproxy/imgproxy
• Twitter/X: https://x.com/imgproxy_net
• Email: security@imgproxy.net

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