Bluebook citation generator and document cite-checker

Every citation in your brief, checked against the Bluebook.

Supra generates Bluebook citations from any source and cite-checks entire briefs and law review articles. It reads your document in order—so every id. and supra is checked against what you actually cited before—and every finding shows what was wrong, what it should be, and the rule that says so.

Start free—10 credits, no card

Upload a Word or PDF file. See the exact credit cost before anything runs.

Cite-check · Opposition to Motion to Dismiss.docx

Brief mode · 42 citations found · Bluebook · rules version pinned

Estimate: 42 credits

Error Citation 17 · p. 9
Rule 4.1
“Id. at 178.”
id. cannot follow a citation to more than one authority.
Suggested: Marbury, 5 U.S. (1 Cranch) at 178.
Warning Citation 23 · p. 12
Rule 10.9
“Brown v. Board of Education, 347 U.S. 483 (1954)”
Full citation repeats an authority already cited in full (citation 6).
Suggested: Brown, 347 U.S. at 495.

40 verified 1 error · 1 warning Table of Authorities ready →

Citation Order Matters.
Supra checks each citation against what comes before it to ensure id., short forms, and citation sequences are correct.
Every Correction Cites the Rule.
Supra identifies the error, provides the correct citation, and cites the corresponding Bluebook rule.
Your Table of Authorities, Built In.
Supra generates a complete table, grouping authorities, alphabetizing entries, and resolving short forms along the way.
Know the Cost Before You Start.
Supra gives you a free estimate for every document, so you know exactly what it will cost before you run it.
Rule-Conforming. Every Time.
Supra applies the governing rules consistently, so the same document gets the same result every time.

The Citation Errors You Miss.

The errors that survive a careful read.

The first citation is rarely the problem. The harder errors occur later, when one citation depends on another: an Id. that follows a string cite, a supra that points to the wrong footnote, or a full case citation that should have been shortened. Those errors cannot be resolved by looking at a citation in isolation. Supra checks citations in sequence, using the citations that precede them to determine what each citation should be. It follows the Bluebook the way a careful cite-checker should: citation by citation, from the beginning of the document to the end.

Smith, 123 F.3d at 45.
→
Id. at 47.
→
Jones, 456 F.3d at 12; Smith, 123 F.3d at 50.
→
Id. at 14.
← which case?

How it works

1
Drop in the draft.
2
See the count and the cost.
3
Review the corrections, then file with confidence.

Start free—10 credits, no card

What it checks

Built for When Every Minute Matters.

Whether you’re a paralegal, litigator, or law student, Supra is built for those moments when the filing deadline is fast approaching.

Cite-check an entire brief

Upload a motion, brief, or memo. Every citation is checked—full cites and short forms, in the order they appear.

Catch id. and supra mistakes

Short forms depend on what you cited before. Supra tracks the sequence across the whole document and flags citations that point to the wrong authority.

Law review mode

Footnote-aware checking for journal work—including “supra note 12” references that point to the wrong footnote.

Table of Authorities in one click

Every document check produces a grouped, alphabetized Table of Authorities, with short forms resolved to their full citations.

Generate a citation from any source

PDF, image, URL, or pasted text in; a Bluebook-formatted citation out—verified before you see it.

Your citation Verified

Marbury v. Madison, 5 U.S. (1 Cranch) 137, 177 (1803).

Every Correction Cites the Rule.

Not just “wrong”: what was wrong, what it should be, and the rule that applies—so you can verify the fix yourself in seconds.

Accuracy

What Supra doesn't do

Supra checks citation form and consistency. It does not tell you whether an authority is still good law—that is Shepard's and KeyCite territory—and it does not yet verify that a quotation or pincite matches the source.

Bluebook today. Jurisdiction manuals are next, starting with the Texas Greenbook. Practice in Texas? Tell us →

Who it's for

One tool, three deadlines.

Litigation—associates and brief writers

The night before filing, the ToA is still a to-do and the short forms haven't been re-checked since the last round of edits. Run the whole brief, fix what's flagged, paste the Table of Authorities.

Brief mode · Table of Authorities · Pro for weekly filers

Law review—editors and cite-checkers

Hundreds of footnotes, dozens of “supra note” references, and a source-check deadline. Law review mode tracks citations by footnote and confirms every supra points where it should.

Law review mode · footnote-aware · Pro + extra credits for the cite-check cycle

Firms and paralegals

Consistent Bluebook form across every filing, from every author, without a second reader on each one. Every correction cites the rule, so review is fast and defensible.

Brief mode · exact cost up front · Pro, plus extra credits when you need them

Pricing

Pay per citation.

1 credit = 1 citation generated or checked. A document check costs 1 credit per citation found. You see the exact count, free, before you proceed.

Best for practitioners

Pro

$49 /month

or $440/year (save 25%)

100 credits every month

Unused credits roll over up to 300.

Citation generator + document cite-check
Table of Authorities + law review mode
Corrected .docx with tracked changes
Email support

Start Pro

Are you a student?

Extra credits

Add 20 to 5,000 credits to a Pro or Student plan—one-time, never expire. The more you buy, the less each credit costs.

Price per credit
Credits per order	Price per credit
20–499	$1.00
500–999	$0.95
1,000–1,999	$0.90
2,000–2,999	$0.85
3,000–3,999	$0.80
4,000–4,499	$0.75
4,500–5,000	$0.70

The whole order is priced at the rate for its size.

Buy 100 credits

Requires a Pro or Student plan.

Not sure how many credits a brief needs? Paste it into the app—the count and cost are free, and every account starts with 10 free credits so you can see a real result first.

Need more options? Contact us for enterprise pricing →

FAQ

Common questions.

Something else? Email support →

What is a credit?

One credit is one citation—generated or checked. A document check costs one credit per citation Supra finds in it, and the exact count is shown for free before the check runs.

Do credits expire?

Purchased credits never expire. They're an add-on to a Pro or Student plan: if your plan ends, they're kept and unlock when you subscribe again. Monthly plan credits roll over up to three months' worth.

Can I try it on a real brief before paying?

Yes. Every account starts with 10 free credits, and the citation count and cost for any document are free—so you can see exactly what a full check would cost before spending anything.

What's the difference between brief mode and law review mode?

Brief mode checks citations the way they appear in court filings and memos. Law review mode is footnote-aware: it tracks citations by footnote and confirms every “supra note” reference points to the right one.

How does Supra check a citation?

Deterministic validators built from the Bluebook's tables run first; then multiple independent AI verification passes review what tables can't express, and anything that fails is repaired and re-verified. Every finding shows the rule it applied, and every report records the rules version it was checked against.

Does Supra check whether my cases are still good law?

No. Supra checks citation form and consistency. It does not replace Shepard's or KeyCite, and it does not yet verify that quotations or pincites match the source.

What file types can I upload?

Single citations: PDF, image, URL, or pasted text. Document checks: Word (DOCX), PDF, or pasted text.

Run it on the brief you're working on right now.

Upload it, see the exact cost, and pay only if you run it. 10 free credits to start—no card.

Start free Questions? Email support →