---
title: Extract DOIs, PMIDs & arXiv IDs from Text | Scholar Sidekick
description: Paste a paragraph, reference list, or abstract and extract every DOI, PubMed ID, PMCID, arXiv ID, ISBN, and ISSN at once. Bulk text parser. No signup.
doc_version: "1.0"
last_updated: "2026-05-18"
---

# Identifier Detector

> HTML version: https://scholar-sidekick.com/tools/identifier-detector

Paste any text - a paragraph, an abstract, a reference list, a manuscript section - and extract every scholarly identifier it contains in one pass. Handles DOI, PMID, PMCID, arXiv ID, ISBN, ISSN, and ADS bibcode.

## What this tool does

Runs a regex engine over the input text and surfaces each identifier with its detected type and the surrounding context. Useful for de-duplicating reference lists, building bibliographies from messy text dumps, sanity-checking manuscript citations before submission, or feeding cleaned identifier lists into the [batch resolver](https://scholar-sidekick.com/docs).

## How to use

1. Open [the tool](https://scholar-sidekick.com/tools/identifier-detector).
2. Paste the text into the input.
3. Review the detected identifiers; copy as a list or use one of the per-row actions to resolve, verify, or export each.

## Programmatic access

The detection engine is used internally by every Scholar Sidekick endpoint that accepts free-form text input (`/api/format`, `/api/format/stream`, `/api/export`). The text-parsing module is not exposed as a standalone API endpoint; if you need it programmatically, file an issue and we will scope it.

## Related tools

- [Identifier Validator](https://scholar-sidekick.com/tools/identifier-validator) - single ID well-formedness and resolvability check
- [DOI Lookup](https://scholar-sidekick.com/tools/doi-lookup) - full metadata for a single identifier
- [Citation Verifier](https://scholar-sidekick.com/tools/citation-verifier) - check that a claimed citation matches the paper at its identifier
- [Free tools index](https://scholar-sidekick.com/tools) - all citation tools

## Sitemap

See the full [sitemap](https://scholar-sidekick.com/sitemap.md) for all pages.