Dissertation Plagiarism Check: What About Appendices?

A dissertation plagiarism check does not settle every appendix issue. Follow your graduate school's instructions for the institutional upload, then review the complete dissertation separately for attribution, reuse rights, and confidential material. An appendix excluded from a similarity report still needs proper source credit and may require a manual review.

Plagiarism Checker Online | Published October 7, 2026 | Sources checked October 7, 2026

Your main chapters may be ready while the appendices still contain a borrowed instrument, an unpublished transcript and a screenshot with no source note. Treating those items as one block called “supplementary material” hides decisions that need different answers.

This guide is for a nearly finished dissertation or doctoral thesis. Start with the broader thesis and dissertation guide if you're still planning the project. A chapter-by-chapter thesis review covers drafting stages; the task here is to settle appendix upload scope and preserve the source trail for the complete manuscript.

Three different files or review scopes

The final dissertation, institutional scan copy, and optional private pre-check

The final dissertation is the complete work your committee and graduate school require. Its appendix citations, captions and source notes belong to that manuscript, whether or not those pages enter a particular text scan. Don't remove them just because a report excludes the appendix.

The institutional scan copy is the file prepared under your graduate school's screening instructions. It might differ from the final manuscript. Keep a separate copy when the institution asks for exclusions, and name it clearly. Record which sections you removed and who gave the instruction. A file named “dissertation-final” is a poor choice for a reduced screening copy.

An optional private pre-check has a third scope: the material you're authorized to send to the chosen service. It doesn't replace an institutional upload or committee review. Before preparing it, ask whether an institution-approved draft check is already available. Don't move restricted material into an outside system just to make the private file look complete.

These distinctions prevent a common mistake: treating “not included in this report” as “doesn't need review.” The scan copy can omit an appendix while the final manuscript still needs an accurate attribution and a documented decision about reproduction or sharing.

An appendix-by-appendix review matrix

This is an original review worksheet, not an institutional policy. Make one record for each appendix, then replace the prompts with your actual evidence. “Unresolved” is a useful status when it names a question and the person who can answer it. It isn't permission to upload.

For a questionnaire, inspect the instrument itself, its introduction and your explanation of any changes. For code, distinguish your implementation from borrowed functions or libraries. A source entry somewhere in the dissertation may not tell a reader which part of an appendix came from that source.

A supporting-file review for a capstone offers a related file-inventory approach. A doctoral dissertation still needs its own graduate-school upload decision; an undergraduate project example doesn't settle that requirement.

When graduate-school instructions exclude appendices

East Texas A&M University's faculty-only iThenticate instructions, checked October 7, 2026, tell staff preparing the screening document to remove appendices and save a new document. That's a local preparation rule. It is not a rule for every dissertation, every similarity service or your final manuscript.

Cornell's dissertation guidance gives survey instruments, additional data and procedure details as examples of appendix content. Its appendix suggestions aren't a screening policy. A source about what an appendix can contain cannot answer what your institution wants uploaded.

If instructions are incomplete, send three specific questions to your graduate school or advisor:

1. Which exact file should enter the institutional scan, and which appendix pages or supporting files should it include?
2. Who runs the scan, using which approved account or submission route?
3. What documentation or separate review should cover material omitted from the screening copy?

Attach an inventory rather than asking only, “Should I include appendices?” The answer can differ for a student-written appendix and a completed interview transcript. Save the response with the file version it applies to.

Worked example: a borrowed survey plus original commentary

Original teaching case, not a real student record. Appendix A contains a borrowed survey instrument and a paragraph you wrote explaining a change to one response option. Appendix B contains participant responses. The instrument's source and reuse conditions, your commentary's source use, and the responses' confidentiality require separate decisions.

Don't rewrite survey items to reduce text matches. That could change the instrument you're describing. Instead, verify the original wording, identify the source and any authorized modification, and ask the appropriate reviewer about reproduction. Your commentary should explain your reasoning in your own words, with citations for borrowed methodological arguments.

The following audit record uses labels rather than a fabricated scholarly source. In a real record, paste the actual verified source URL. No protected questionnaire or participant information is reproduced here.

The next action is to retrieve the source and resolve the rights and upload questions, not to order a scan. Once those decisions are recorded, inspect the permitted text file and review its matches without confusing a reproduced instrument with your original commentary.

What a text scan cannot verify

PlagAware's FAQ explains that it extracts plain text from uploaded files and that public-source coverage has limits. Paywalled texts aren't generally covered in full, and even public sources may be unavailable or prohibit automated reading. Different files, settings and accessible reference texts can produce different reports.

Its report documentation also states that the system cannot identify plagiarism in images, graphics or diagrams. A screenshot of a questionnaire therefore needs manual inspection. A readable caption doesn't mean the image's contents were verified.

A low result doesn't prove authorship, grant reproduction rights or authorize sharing participant records. Nor does a private report guarantee the same result as your institution's report. Learn to interpret text matches as review prompts rather than a clearance certificate.

Final appendix handoff checklist

1. Inventory: list every appendix and separate supporting file, including versions.
2. Local scope: save the instruction identifying the institutional screening copy.
3. Source credit: check quotations, captions, instrument notes and reference entries against originals.
4. Rights evidence: record the applicable license or other authorization; resolve unknown permissions.
5. Protected data: obtain the appropriate decision before any outside upload.
6. Version record: retain the complete manuscript, permitted screening file, report and review notes together.

If an optional scan is useful after that review, you can compare readable text with public sources. Check pricing before you upload an authorized file. A Plagiarism Scan costs $0.29 per standard page, with a $0.90 minimum and no subscription. One standard page is 1,800 characters including spaces. The purchase doesn't replace the appendix source and confidentiality decisions.

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