fix: download output files via CDN with required query params#370
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fix: download output files via CDN with required query params#370
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QianrenLi
approved these changes
May 6, 2026
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Summary
Root cause: Upstream Overleaf changed output file serving — files are no longer proxied through the web frontend. They must be fetched directly from the CDN with three query params that the extension was ignoring.
Fix (2 files, +50/-3 lines):
clsiServerId/pdfDownloadDomaintoCompileResponseSchema. ExtendedgetFileFromClsi()to construct CDN URL with?compileGroup=&clsiserverid=&enable_pdf_caching=truewhen both fields are available, downloading cross-origin without cookies. Added_downloadAbsolute()helper.compileGroup/clsiServerId/pdfDownloadDomainfrom compile response; pass them when opening output files.Before:
GET https://www.overleaf.com/project/{pid}/.../output.pdf→ 404After:
GET https://compiles.overleafusercontent.com/zone/c/project/{pid}/.../output.pdf?compileGroup=standard&clsiserverid=xxx&enable_pdf_caching=true→ 200