{"adoption": {"forks": 361, "observed_at": "2026-08-28T04:06:50.315691+00:00", "stars": 2416}, "canonical_url": "https://ross.abutalabs.com/products/premailer", "card": {"archived": false, "artifact_type": "library", "description": "Preflight for HTML email", "domain": ["email", "web-development", "developer-tools"], "enriched": true, "function": ["templating", "email", "parser", "css-framework"], "health_score": 79, "homepage": "https://premailer.github.io/premailer", "language": "Ruby", "license": "NOASSERTION", "license_family": "other", "maturity": "active", "member_repos": ["premailer/premailer"], "name": "premailer/premailer", "platform": ["ruby", "cli"], "pushed_at": "2026-08-19T16:58:24+00:00", "repo": "premailer/premailer", "stars": 2416, "tags": ["html-email", "css-inlining", "email-compatibility", "plain-text-generation", "nokogiri"], "topics": ["premailer", "nokogiri", "css", "ruby", "mail", "inline"], "urls": [], "use_cases": ["inline css styles into html emails", "convert a newsletter html file to email-safe html", "generate plain text version of an html email", "check which css properties are unsupported by email clients", "convert relative links and image paths to absolute urls in email html"], "what_it_is": "Premailer is a Ruby gem that prepares HTML email for delivery by inlining CSS styles, converting relative URLs to absolute, and checking CSS properties against email client support. It can also generate a plain-text version of the email and report potentially problematic CSS.", "when_to_avoid": ["you need email sending/delivery itself - this only transforms HTML", "your project is not in Ruby", "you need MJML-style component-based email templating"], "when_to_choose": ["you send HTML email from Ruby and need inline CSS for client compatibility", "you want automated warnings about email-client-unsupported CSS", "you need a plain-text alternative generated from HTML email"]}, "data_as_of": "2026-08-30T08:39:29.467469+00:00", "members": [{"path": "/products/premailer", "repo": "premailer/premailer", "role": "main", "score": 76}], "provenance": {"archived": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "artifact_type": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "description": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "domain": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "enriched": {"inputs": [], "kind": "computed", "method": "enrichment_status"}, "function": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "health_score": {"inputs": ["days_since_push", "days_since_release", "archived"], "kind": "computed", "method": "health_v1"}, "homepage": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "language": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "license": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "license_family": {"inputs": ["license"], "kind": "computed", "method": "license_family"}, "maturity": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "member_repos": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "name": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "platform": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "pushed_at": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "repo": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "stars": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "tags": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "topics": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "urls": {"kind": "observed", "observed_at": "2026-08-28T04:06:50.315691+00:00", "source": "github"}, "use_cases": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "what_it_is": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "when_to_avoid": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}, "when_to_choose": {"confidence": null, "enriched_at": "2026-08-30T02:33:09.610799+00:00", "kind": "inferred", "prompt_version": 1, "sources": [{"content_hash": "cbc0b72cf11b251f827aea5624f690d94f908ad9d9d43545210626d95a8bbb39", "fetched_at": "2026-08-28T04:06:50.315691+00:00", "kind": "readme", "missing": false, "url": "https://github.com/premailer/premailer"}, {"content_hash": "9dd52e1977ef67c46111288b7ab382bc4e2b448ba743df6970963e7911f9c384", "fetched_at": "2026-08-29T10:13:43.512653+00:00", "kind": "homepage", "missing": false, "url": "https://premailer.github.io/premailer"}], "taxonomy_version": 1}}, "score": {"components": {"activity": 98, "longevity": 100, "rhythm": 35}, "computed_at": "2026-09-02T17:46:02.011165+00:00", "flags": ["no_releases", "no_license"], "formula": "round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)", "inputs": {"age_days": 6124, "days_push": 14, "days_rel": null, "gap_med": null, "n_releases_24m": 0}, "score": 76, "version": 2}, "staleness": {"enrichment_outdated": false, "low_confidence": false, "scrape_days": 9, "stale_scrape": false}}