Fast, secure image processing server and Go library, using libvips
4k
Stars
170
Forks
3
Open issues
30
Contributors
AI Analysis
imagor is a high-performance image processing server and Go library built on libvips, offering 4-8x faster processing than ImageMagick. It specializes in server-side image transformation (resize, crop, filter, watermark, format conversion) with Docker-native deployment and Thumbor API compatibility, serving teams building scalable image infrastructure and CDN backends.
Inferred from signals mentioned in the README (tests, CI, type safety) — not a review of the actual code.
AI's overall editorial judgment — not an average of the bars above, can weigh other factors too.
Fast libvips-based image server built as drop-in Thumbor replacement; moderate adoption in production.
imagor is a Go-based image processing server wrapping libvips, positioned as a high-performance alternative to Thumbor. It offers HTTP API with URL-based image transforms (resize, crop, filters, format conversion), Docker deployment, and both server and library usage modes. README claims 4-8x speed over ImageMagick and benchmarks show competitive performance. Adoption appears concentrated in organizations replacing Thumbor or building new image CDN infrastructure; real-world user count not publicly documented.
Created May 2021 by cshum. Project emerged as performance-focused alternative to Thumbor (Python, slower) while libvips and imgproxy already occupied similar space. Adopted Thumbor's URL syntax to ease migration path. Includes companion project imagorvideo for video thumbnailing.
Star count grew from ~0 to 3,967 over ~5 years; gained 1 star in last 7 days. Growth appears steady but not accelerating—typical for infrastructure tooling after initial adoption plateau. Last commit June 5, 2026 suggests active maintenance. Competing projects (imgproxy: 10k, libvips: 11k, imaginary: 6k) have captured majority of star attention, but absolute star count does not reflect actual production deployment.
Adoption not verified via README or public case studies. Docker Hub repo exists (shumc/imagor). Documentation site and benchmarks published, suggesting author has production deployment experience. However, no known public users, enterprise deployments, or testimonials mentioned. Adoption likely exists but is not publicly documented.
Based on README: wraps libvips C library via vipsgen (custom Go bindings), implements streaming pipelines for parallel processing, HTTP server with URL-based API. Supports pluggable storage (local, cloud), various output formats, security modes (signed URLs, unsafe). Appears to prioritize throughput and low memory footprint over feature breadth.
Badge displayed showing codecov integration; README does not specify coverage percentage. CI/CD badge indicates active test pipeline.
Last push June 5, 2026 (22 days before evaluation date). Test workflow badge present. Docker Hub presence and docs site (docs.imagor.net) actively maintained. Commit cadence not disclosed, but recent activity suggests active, not dormant, stewardship.
ADOPT IF: you need a fast image processing server drop-in for Thumbor, have Go expertise in-house, and operate in closed infrastructure (Docker/Kubernetes). AVOID IF: you require widespread community support, vendor backing, or extensive third-party integrations; imgproxy may be safer if adoption certainty matters. MONITOR IF: you're evaluating performance-critical image pipelines at scale—imagor's benchmarks are credible, but real-world deployment patterns (not just microbenchmarks) should be verified in your workload before committing.
Independent dimensions
Mainstream potential
4/10
Technical importance
7/10
Adoption evidence
3/10
- Adoption concentration: real-world production usage not publicly documented; difficult to assess ecosystem health or community traction.
- Maintenance bus factor: project appears to be primarily maintained by original author (cshum); no visible multi-maintainer structure or corporate backing.
- Feature creep vs. simplicity: README emphasizes speed and security but does not clarify long-term roadmap or API stability guarantees.
- Competitor shadow: imgproxy's 2.7x larger star count and apparent greater visibility may limit imagor's ability to attract contributors and integrations.
- libvips version coupling: relies on libvips for security and feature updates; breaking changes in libvips could impact imagor without warning.
imagor likely remains a viable niche tool for teams migrating from Thumbor or building image infrastructure from scratch in Go-native environments. Unlikely to become market leader; most new adoption will continue toward imgproxy due to momentum and visibility. Project sustainability depends on author's continued investment; slow star growth suggests plateau rather than decline.
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Languages
Information
- Website
- https://imagor.net
- Language
- Go
- License
- Apache-2.0
- Last updated
- 1w ago
- Created
- 63mo ago
- Analyzed with
- anthropic/claude-haiku-4-5
Stars over time
Contributors over time
Top 100 contributors only — repos with more will plateau at 100.
Open issues
Open pull requests
Top contributors
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Similar Go+libvips stack; imgproxy has ~2.7x more stars and appears to dominate market. Both are drop-in replacements for Thumbor, but imgproxy has stronger public adoption narrative.
Also Go-based image server, ~1.5x more stars. Slightly lower-level API; imagor offers more canned filters and format conversions out-of-box.
Original Python reference; slow (confirmed by libvips wiki). imagor explicitly targets migration path. However, Thumbor's massive historical deployments mean many orgs stay with it rather than migrate.
Low-level C library; imagor wraps it. Direct libvips use requires more code; imagor trades flexibility for convenience and HTTP transport.
C++ image library, ~half the stars. Different positioning (library vs. server); narrower adoption surface.
