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Adds extract, generate and transform for Dynjandi image URLs (https://cdn.dynjandi.dev). Supports resize, crop, format and quality, and drops anything the service would reject. Wire-up follows separately.
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baldurpan
marked this pull request as draft
October 4, 2026 22:09
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Adds Dynjandi as an image CDN provider.
URL shape
Dynjandi serves an uploaded image at
/<id>and a variant at/<id>/followed by a chain of-/<operation>/<arguments>/segments, applied in order:The grammar is specified in the project's OpenAPI spec (the "Variant URL grammar" section).
Operations
widthandheightmap toresize/<w>x<h>/, either side optional. With both, the service scales to cover and centre-crops, which is the default fit unpic asks for.formatmaps toformat/<f>/forjpeg,png,webpandavif.jpgis sent asjpeg.qualitymaps toquality/<q>/: an integer from 1 to 100, or one of the service's named levels (lightest,lighter,normal,smart,better,best).cropis provider-specific and carries the grammar's<w>x<h>/<position>text (compass,attention,entropy, face chains, orfocal/<x>x<y>).scale_cropis read ascrop.extractreads crops back, sotransformof an already-cropped URL keeps the crop.The service answers any operation it doesn't support with a 400, so anything without a Dynjandi equivalent is dropped, never sent. That includes out-of-range or non-integer sizes, unsupported formats and unknown quality values.
Defaults and caveats
Accept, andformat/autois a 400, so when no format is given the original format is served.CONTRIBUTING.md. It is documented in the provider's header comment.Detection
cdn.dynjandi.devis added todata/domains.json. Custom domains aren't detected and needprovider: "dynjandi".Checks
deno check src/is clean, anddeno test -A src/passes (88 tests, 314 steps).deno fmt --checkis clean on every touched file exceptdeno.jsonc, which already lacks a final newline onmain.deno publish --dry-runpasses.e2e.test.ts: both Dynjandi steps pass against production with the demo image, a CC0 photo of the Dynjandi waterfall. Six other steps (Cloudflare ×2, IPX ×2, Next.js, Vercel) fail the same way on the base commit without this change.generatewere parsed with the service's own grammar package (@dynjandi/transform-grammar). They cover a matrix of every operation, alone and combined, at boundary values. URLs built by the Dynjandi SDK extract back to the same width, height, format, quality and crop.@unpic/corewith this provider loads at every width (640w to 1600w).