# webp-sh/webp_server_go

Go version of WebP Server. A tool that will serve your JPG/PNG/BMP/SVGs as WebP/AVIF format with compression, on-the-fly.

Repository: https://github.com/webp-sh/webp_server_go
Canonical: https://ross.abutalabs.com/products/webp_server_go
Homepage: https://docs.webp.sh
Language: Go
License: GPL-3.0
License Family: copyleft
Topics: webp-server, serving-images, webp, pagespeed, image-optimization, image-processing
Last push: 2026-08-24T02:42:42+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 2397, "days_push": 9, "days_rel": 11, "gap_med": 33, "n_releases_24m": 18}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2006, forks 188 (observed 2026-08-28T04:06:04.711173+00:00)

## What it is
A Go-based HTTP server that serves JPEG, PNG, BMP, GIF, SVG and other images as WebP/AVIF/JXL on the fly, without changing the original URLs. It caches converted outputs and is typically deployed via Docker behind a reverse proxy.

## Use cases
- serve jpg/png images as webp without changing urls
- reduce image bandwidth and speed up website loading
- improve google pagespeed score with modern image formats
- on-the-fly image compression for an existing image directory
- convert images to avif automatically on a self-hosted server
- optimize blog or gallery images with a caching image proxy

## When to choose
- you have a directory of legacy JPG/PNG images and want modern formats without renaming files or regenerating assets
- you want a standalone self-hosted image optimization service deployable with Docker
- you need automatic caching of converted images to avoid repeated conversion cost

## When to avoid
- you need image processing embedded in your application code rather than a separate HTTP service
- you require formats or transformations beyond WebP/AVIF/JXL conversion, such as resizing or cropping
- you cannot run an additional service or container in front of your static files

## Facets
- artifact type: service
- maturity: active
- function: image-processing, http-server, caching
- domain: web-development, image-processing, self-hosted, performance
- platform: go, self-hosted, cross-platform
- tags: webp, avif, image-optimization, on-the-fly-conversion, pagespeed, image-compression, docker, linux

## Member repositories
- webp-sh/webp_server_go (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:04.711173+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:01:26.062371+00:00, confidence not recorded.
  - readme: https://github.com/webp-sh/webp_server_go (fetched 2026-08-28T04:06:04.711173+00:00, sha 4a4df465c108)
  - homepage: https://docs.webp.sh (fetched 2026-08-29T10:41:20.540020+00:00, sha fc6055bec3f3)
- Data as of 2026-08-30T08:39:29.467469+00:00.