How paperful compares — reference

Vendor-by-vendor notes and longer capability tables. Most readers only need How paperful compares.

Last reviewed: 2026-09-21. Feature lists for other products are based on public docs and positioning — not paid pilots.

Capability snapshot

Zotero-centric (extended)

Legend: Yes · Partial · No.

Capability

paperful

Zotero built-in

zotero-zotadata

StorScan

ZotMeta

zotero-agent

zotero-mcp (typical)

Bulk fetch missing PDFs

Yes

Partial

Yes

Partial

No

Partial (pdf-fetch)

Partial (Unpaywall attach)

Collection-scoped batch runs

Yes

No

Partial

Partial

Partial

Yes

Partial

Resumable manifest / retry

Yes

No

Partial

Partial

Partial

Partial

No

Open-access source stack

Yes

Partial

Yes

Partial

No

Partial

Partial

Campus EZProxy

Yes

No

No

No

No

No

No

Sci-Hub (explicit opt-in)

Yes

Partial

Yes

No

No

Partial

No

Metadata lint / verify DOI

Yes

No

Yes

No

Yes

Yes

Partial

Metadata apply

Yes

No

Yes

No

Yes

Yes

Partial

Attachment / disk repair

No

Partial

Partial

Yes

No

Partial

No

Dedupe / merge items

Yes (dedupe --apply merges children and better fields, then trashes the extra; Zotero only)

Partial

No

Partial

No

Yes

Partial

CLI / automation

Yes

No

No

No

No

Yes

Yes (MCP)

Disk-first then write-back

Yes

No

No

Partial

No

Partial

No

Per-item folder you can restore from

Yes

No

No

No

No

No

No

Copy PDFs already in Zotero onto disk

Partial (snapshot --pdfs all)

Partial (File → Export PDFs)

No

No

No

No (export is bibliography; get_item_pdf_path is a path)

Partial (get_pdf_path)

Grey-literature landing playbooks

Yes

No

No

No

No

No

No

Grounded summary / collection review

Partial (opt-in summarize / synthesize; text layer)

No

No

No

No

Partial (README: summarize PDFs into notes)

Yes (chat reads PDF text; the model writes the summary)

OCR for scanned PDFs

Partial (paperful ocr, OCRmyPDF text layer on disk)

No

No

No

No

Partial (pdf-prep, OCRmyPDF)

Partial (some forks, e.g. Docling OCR pre-step)

Zotero version and attach (indicative)

Verify against each project’s latest release before upgrading Zotero.

Tool

Typical Zotero

Notes

paperful

7–9 download; 10+ attach and fix-metadata --apply

Local HTTP API

StorScan, Attanger, ZotMeta 2.0, zotodata

7–9 (per upstream READMEs)

Plugin .xpi

zotero-agent

7+

Bridge plugin + CLI

ZotFile

≤6

Not maintained for Zotero 7+

Built-in Find Available PDF

6+

Custom resolvers in Config Editor

BibTeX / export fixers

Capability

bibcite

bibtex-tidy

bibmanager

bibtex-cleaning-agent

JabRef

Dedupe entries

Yes

Yes

Yes

Yes

Yes

Resolve DOI/arXiv/title → BibTeX

Yes

No

Partial (ADS)

Yes (LLM + APIs)

Partial

Stable citation keys

Yes

Partial

Yes

Yes (patterns)

Yes

Upgrade arXiv → published

Yes

No

Yes

Partial

Partial

Mendeley export cleanup

Partial

Partial

Partial

Partial

Yes (import)

Zotero library sync

No

No

No

No

Yes

Batch PDF download

No

No

Partial (ADS)

No

Partial

DOI-centric downloaders

Capability

paperful

paperscraper

pyzotero + custom scripts

Needs a library manager

Adapter (Zotero now)

No

Optional

Input

Library items / collections

DOI JSONL / dict

API keys or local DB

Publisher TDM APIs

No

Yes (Elsevier/Wiley, etc.)

DIY

Attach back to items

Yes

No

DIY

EZProxy / Sci-Hub

Yes / opt-in

No / DIY

DIY

Complementary: Zotero plugins and built-ins

paperful

  • Sites: GitHub · this repo

  • Fit: Research helper for a reference library: clean records, find missing PDFs, summarise papers, keep a platform-agnostic mirror. Routed OA stack (including CORE with API key), campus EZProxy, optional Scholar cookies, opt-in Sci-Hub, user playbooks for grey literature and field-specific hosts, and an opt-in AI browser after scripted lanes fail. Collection-mirrored out/ tree (snapshot / restore, including snapshot --pdfs all for PDFs already in Zotero, manifest.jsonl), attach on Zotero 10+. Identifier verify (Crossref/OpenAlex/PubMed) + lint + fix-metadata on disk, then adapter write-back. dedupe writes a review pack and, with --apply, merges the extra parent’s PDF, notes, and better fields onto the keeper, then trashes that parent (DOI, then title+year; Zotero only). gaps counts missing PDFs and DOIs. Optional local summarize / synthesize and recover (last run lane after Scholar / EZProxy / htmlpdf fail, or recover --item; text layer from the PDF or from paperful ocr; not a chat agent). Zotero is the well-tested adapter. Mendeley (REST) and EndNote (read-only database plus an import bundle) are seeking testers.

  • With others: paperful attachments for a CLI report (and flagged repairs from out/); StorScan or Attanger when you want the work inside Zotero, including incoming downloads; zotero-agent for disk GC or a two-up scan split; zotero-mcp when the work is a conversation.

  • Not a substitute for: In-app plugin UX, .bib hygiene tools, or two-up scan splitting.

Zotero built-in

  • Sites: Zotero · custom PDF resolvers

  • Fit: Per-item Find Available PDF, identifier lookup, duplicate merge UI, File → Export PDFs (a one-off dump of files already on disk, not a restore ledger).

  • With paperful: Built-in capture on save; paperful for batch backfill and for snapshot / restore when Zotero file storage is the wrong warehouse.

zotero-zotadata

  • Sites: GitHub

  • Fit: Plugin combining attachment validation, multi-source PDF retrieval, and metadata updates.

  • With paperful: Overlapping PDF mission; zotodata stays in Zotero.

StorScan

  • Sites: GitHub

  • Fit: Attachment operations — scan, fix misplaced linked files, merge duplicate files.

  • With paperful: paperful attachments reports broken links, ghosts, and same-file duplicates, and can repair them from out/ when you pass a flag and --apply. StorScan is the in-app scan.

ZotMeta

  • Sites: GitHub

  • Fit: Bulk metadata from DOI, ISBN, arXiv; PDF cache identifier extraction.

  • With paperful: Overlaps lint / fix-metadata; ZotMeta is in-app.

Attanger and ZotMoov

  • Sites: Attanger · ZotMoov

  • Fit: ZotFile-era workflows on Zotero 7+ — match downloads, rename/move linked files.

  • With paperful: Incoming-file organisation and tablet send/get. paperful attachments --rename and --link cover the mirror-stem rename and a stored-to-linked cutover under out/, and they stay off until --apply.

zotero-agent

  • Sites: GitHub

  • Fit: Local-first CLI and MCP via bridge plugin — search, dedupe, merge, enrich, pdf-fetch, PDF notes, and pdf-prep OCR (OCRmyPDF) for scans. export writes bibliography formats, not a PDF folder tree.

  • With paperful: Agent for hygiene and merge; paperful for collection runs with a manifest, a disk text layer (ocr), EZProxy, grey-lit playbooks, and a folder you can restore from. zotero-agent pdf-prep still owns two-up page splits.

zotero-mcp ecosystem

  • Sites: richardjlyon/zotero-mcp · cookjohn/zotero-mcp · mcp-zotero

  • Fit: LLM-facing search, PDF text, create items, sometimes Unpaywall attach. Some forks OCR scans (Docling) or write reading notes from chat.

  • With paperful: MCP when a person is in the loop; paperful for unattended collection runs, the disk ledger, ocr on image PDFs, and batch summarize / synthesize.

ZotFile (legacy)

  • Sites: zotfile.com

  • Status: Not compatible with Zotero 7+. Use Attanger / ZotMoov.

BibTeX, Mendeley, and scripts

bibcite and bibtex-tidy

  • Sites: bibcite · bibtex-tidy

  • Fit: Resolve papers to canonical BibTeX, dedupe, tidy, upgrade preprints.

  • With paperful: Orthogonal until a bib-file LibraryBackend exists.

bibmanager

  • Sites: Read the Docs

  • Fit: Unified BibTeX database, ADS integration, optional PDF fetch from ADS.

Mendeley

  • Fit: Reference Manager Duplicates smart collection; Desktop merge UI. paperful can set manager = "mendeley" (REST, OAuth). That adapter is seeking testers. Zotero is the well-tested path.

paperscraper

  • Sites: GitHub

  • Fit: Python metadata + save_pdf from DOIs; publisher TDM API keys.

  • With paperful: paperscraper when the input is a DOI list, not a collection tree.

Choosing in one glance

Need PDFs already in Zotero copied into a collection-shaped tree, with a record per item?
  → paperful snapshot --pdfs all

Need a one-off dump of those PDFs from the Zotero UI?
  → File → Export PDFs

Need tablet send/get after ZotFile died?
  → ZotMoov custom menus (+ Attanger)

Need a text layer on a scanned PDF?
  → paperful ocr. Two-up books: zotero-agent `pdf-prep`

Need LLM to fix one paper’s metadata while writing?
  → zotero-mcp

Need a grounded summary of many text-layer PDFs, then one collection review?
  → paperful summarize, then synthesize

Need reproducible .bib for a paper submission?
  → bibcite fix / bibtex-tidy