Publishing has never been this easy

We've worked hard on, and continue to refine, a set of tools and instructions that make the submission process an enjoyable experience.

Download template

Use one of our manuscript templates (or copy its structure) to speed up review time substantially.

If submitting a literature review, bioinformatics/software tool, protein structure, clinical trial, systemic review, or other non-standard research manuscript then please also review the discipline specific standards.

Overview

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Please use clear, unambiguous, technically and grammatically correct English throughout.
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Files:

  • Manuscript
  • Figures
  • Tables
  • Raw data or code files
    • Data or code is almost always required for review and publication.
    • Note Authors not submitting their raw data correctly is the top reason for delay.
    • Choose how you want to submit your raw data:
      1. Upload to PeerJ as a supplemental file.
      2. Upload to an online repository and submit access details (required for files over 30MB).
    • If owned by a third party, please submit written permission to publish.
    • If you cannot submit on grounds of privacy or safety, please submit a statement from the owners of the raw data or code explaining why.
    • Files must be machine-readable i.e. images, PDFs, Powerpoints etc. not accepted.
  • Supplemental files
    • Files that are not part of your main manuscript:
      • Files for staff (as appropriate)
        1. Ethics / Human participant / Field study / Vertebrate animals approval documents.
        2. Example human participant consent form.
        3. Photo/video consent form.
        4. CONSORT flow diagram and checklist.
        5. PRISMA flow diagram and checklist.
        6. COREQ checklist.
        7. Trial protocol.
      • Files for publication
        1. Raw data or code (required).
        2. Large supplemental datasets.
        3. Figures and tables.
        4. Articles.
        5. Video and audio.
    • Supplemental Files should not exceed 50 MB in total (30MB individual file limit). If you need more space please contact us.
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Manuscript formatting:
  • US Letter.
  • Use line numbers.
  • 2.5 cm margin on all edges.
  • 12 point Times font for readability.
  • 'Normal' style for text, 'Heading' styles for headings.
  • Do not use 'unusual' document styles/templates (e.g. 'Normal (Web)').
  • Left justify all text to the left margin. Do not 'full width' justify.
  • Title guidance:
    • Be clear, appealing, interesting and specific.
    • Match the search queries used to find similar articles.
    • Be concise: ideally 20-60 characters (250 character hard limit).
    • Avoid acronyms, abbreviations and jargon.
    • Accurately describe work.
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Raw data or code submitted as either:
  1. A link to a repository where the data and/or code is accessible (e.g. Github, Gitlab).
  2. or Supplemental file(s) containing the raw data or code.
  • Machine-readable (PDF, Powerpoint, images etc. not accepted).
  • Data or code is almost always required:
  • If the data is owned by a third party, please obtain permission to publish. Alternatively, submit a statement from the owners explaining why they cannot publish on the grounds of privacy or safety.
  • If too large, upload it to an online repository (e.g. Figshare, Dryad etc).
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LaTeX:

  • Submit a single PDF with the full set of LaTeX source files.
  • Use line numbers.
  • Overleaf is a great LaTeX editor. Use our template.
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No cover letters or pre-submission inquiries needed.
7
You cannot publish any materials that have been published in aManuscript formatting: peer-reviewed journal.

Standard Sections

Use these Standard Sections where possible. Include any methodology or experiment sections appropriate to your field.
Author Cover Page (see below)
Abstract
  • 500 word (3,000 character) limit.
  • Self-contained, concise description of reason for the work, methodology, results, and conclusions.
  • Uncommon abbreviations should be spelled out at first use.
  • No footnotes or references (except when referencing a critiqued publication by DOI).
  • Subheadings must be bold, followed by a period, and start a new paragraph e.g.
    Background. The background section text goes here...
Background
[methodology / experimental sections appropriate to your work]
Results
Discussion
Conclusions
Acknowledgments
  • Do not acknowledge funders here, there is a separate Funding Statement for that. Everyone named in the acknowledgments section must be informed that they are named.
References

Literature Review standard sections

Author Cover Page (see above)
Abstract (see above)
Introduction
  • Describe the field and explain why this review is needed.
  • Explain relevance to readers in the field, and associated areas.
  • Cite previous reviews.
Survey Methodology
  • Explain how you ensured comprehensive and unbiased coverage of the literature.
Subheadings
  • We recommend that you subdivide your article into a small number of major topic areas.
Conclusions
  • Identify unresolved questions / gaps / future directions.
Acknowledgments (see above)
References

Author cover page

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Included as the first page of your manuscript (view example).
2
Author info entered online must match the author info in your Author Cover Page.
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Author Cover Page structure:
  • Article title
  • Authors
    • First names (or first initials in combination with full middle names).
    • Middle name initial(s).
    • Last names (surname, family name).
  • Affiliations (indicate multiple affiliations, or current addresses where appropriate).
    • Department, university, or organizational affiliation.
    • Location: city, state/province (if applicable).
    • Country.
  • Corresponding Author
    • First and Last name.
    • Email address.

OR

  • If authored by a consortium, list names and affiliations in correct order in the Acknowledgments section.
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All authors must meet the ICMJE authorship authorship requirements. Include other contributors in the Acknowledgments section.

Reference Format

Choose your style

PeerJ prefers you spend your time doing science, not formatting references!

Submit your references in whatever style you like.

Just make sure they're full, clear, and consistent and we'll standardize at production.

PeerJ uses the 'Name. Year' style with an alphabetized reference list.
In-text citations
  • For three or fewer authors, list all author names (e.g. Smith, Jones & Johnson, 2004). For four or more, abbreviate with ‘first author’ et al. (e.g. Smith et al., 2005).
  • Multiple references to the same item should be separated with a semicolon (;) and ordered chronologically.
  • References by the same author in the same year should be differentiated by letters (Smith, 2001a; Smith, 2001b).
  • Cite articles accepted for publication as 'in press'. Include in reference section and upload as a Supplemental file.
  • Cite work unpublished, in preparation or under review as 'unpublished data'. Use the author's initials and surname in the text only. Do not include in the reference section.
  • Avoid referencing personal communications. Reference as 'pers. comm.', including the name and year.
The Reference Section
  • Journal reference format: List of authors (with initials). Publication year. Full article title. Full title of the Journal, volume: page extents. DOI (if available).

    Example journal reference:
    Smith JL, Jones P, Wang X. 2004. Investigating ecological destruction in the Amazon. Journal of the Amazon Rainforest 112:368-374 DOI: 10.1234/amazon.15886.

  • Gray Literature (e.g. patents, technical reports from agencies or research groups, working papers, white papers, preprints etc.) described thoroughly: Authors. Page/paper title. Publication date. Publisher name. URL (access date). Identification (e.g. patent or series) numbers.

    Example gray literature references:
    Boettiger C. 2013. knitcitations: citations for knitr markdown files. Available at https://github.com/cboettig/knitcitations (accessed 10 July 2012)
    Dorch B. 2012. On the Citation Advantage of linking to data. hprints. Available at http://hprints.org/hprints-00714715 (accessed 5 July 2012)

  • Example book reference:
    James FY. 2010. Understanding corn and wheat. Oxford: Oxford University Press.

  • Example book excerpt:
    Smith PG. 2011. Behavior in ants. In: Jones HY, ed. Insect behavior in the Andes. Berlin: Springer Verlag, 101–200.

  • Example thesis:
    Blair HJ. 1989. Structural modifications of the fern genus Lecanopteris (Polypodiaceae). D. Phil. Thesis, Cambridge University.

  • Example webpage:
    Johnson S. 2010. Italian Plants. Available at http://www.italianplants.com (accessed 22 March 2011).

  • Example abstract:
    Thomas D, Scharfenecker U, Schiltmeyer B. 2006. Low potential for drug-drug interaction of lacosamide. [Abstract 2.235] Epilepsia 47(Suppl 4): 200.

  • Reference Section sorted by Author, Year, Title. All citations must be present in the reference section, and all references cited in the text. Place non-cited references in a "Further Reading" section.
  • Zotero users please download PeerJ Zotero style.
  • EndNote users please download PeerJ Endnote style and:
    • Open EndNote.
    • Open library (the citation file).
    • Set style to "PeerJ".
    • Go to Edit --> Output Styles --> Edit "PeerJ".
    • Under Bibliography --> Author Lists, set "Abbreviated author list" to "List all author names".
Mendeley
  • Mendeley users in MS Word please change your field codes into plain text by performing the following:
    • If using Windows:
      Ctrl-A (Selects all the text in the manuscript).
      Ctrl-Shift-F9 (Changes the fields codes).
    • If using OSX:
      Command-A (Selects all the text in the manuscript).
      Command-6 (Changes the fields codes).

File Types

Manuscript
    Manuscript checks  
  • Manuscript document formats:
    • .DOCX (Preferred) and .DOC
    • .TeX (+ PDF with embedded figures and tables)
    • .ODT
    • .RTF
  • US Letter.
  • Use line numbers.
  • 2.5cm margin on all edges.
  • 12 point Times font for readability.
  • 'Normal' style for text, 'Heading' styles for headings.
  • Do not use 'unusual' document styles/templates (e.g. 'Normal (Web)').
  • Left justify all text to the left margin. Do not 'full width' justify.

Figures
    Figure and Table checks  
    Figures Use the original file format and image size whenever possible.
    Vector images
    (e.g. charts, diagrams):
    • PDF (preferred)
    • EPS
    • PNG
    Raster/bitmap images
    (e.g. drawings, screenshots):
    • PNG (preferred)
    • JPEG (photographs only)
    • PDF
    • EPS
    Ideal size 3000px wide
    (minimum: 900 x 900px)

  • Please upload as separate files (i.e. do not embed in manuscript).
  • 'Figure' refers to graphs, charts, line drawings and photographs.
  • Lower quality images may be accepted for review, but these must be replaced with high-quality (300dpi) images on resubmission.
  • Include figure numbers in filenames e.g. 'Figure 1.png'.
  • Titles are required for all figures (legends are optional):
    • Title format



    • Legend format (optional)



  • All figures must be cited in the main text.
  • Figure order:
    • Figure 1 appears first in the text, and first cited.
    • Figure 2 appears second, and the next cited after Figure 1.
    • etc...
  • When citing use the abbreviation 'Fig.'. When starting a sentence with a citation, use 'Figure 1'.
  • Minimum white space around each figure/figure part.
  • Label with a readable, uniform font. Vertical height of 2mm suggested.
  • Multi-part figures submitted in one file and arranged as they are to be published. Label each part with an uppercase letter.

Tables
    Figure and Table checks  
  • Table document formats:
    • .DOCX (Preferred) and .DOC
    • .TeX (+ PDF with embedded figures and tables).
    • .ODT
    • .PDF (first submission only).
  • Please upload as separate files (i.e. do not embed in manuscript).
  • Include table numbers in filenames e.g. 'Table 1.png'.
  • Titles are required for all tables (legends are optional):
    • Title



    • Legend (optional)



  • Table order:
    • Table 1 appears first in the text, and first cited.
    • Table 2 appears second, and the next cited after Table 1.
    • etc...
  • Cite tables in text as 'Table 1', 'Table 2' etc.
  • Include units in column and row headings, in parentheses.
  • Tables must fit in a single 21.6 x 28 cm page with 2.5 cm margins.
  • Place footnotes below the table; these may be used to explain abbreviations.

    Figure and table referencing

  • For figures, videos or tables containing copyrighted material not created by one of the authors (e.g. photographs, maps):

  • When submitting photographs please indicate the identity of the photographer.

  • Examples of credit attributions:

    Photo credit: San Diego Zoo Global.
    Photo credit: Ali Smith.
    Image credit: the MESH archive at http://ondemand.nssl.noaa.gov
    3D model credit: Ishmael Kreill
    Map data © 2018 Google

  • For figures with identifiable human subjects:
    • Written consent from the human subject. If the subject is a minor, consent must be provided from their parent or guardian.
    • Upload a document with the copyright owner's permission to publish under a CC BY licence
      (download photo/video permission letter template).
  • Cite map sources. If using Google Earth or Google Maps also attribute the third-party data providers used by the map:
    • In the figure legend.
    • On the figure.
  • Use maps which allow unrestricted re-use where possible.

TeX / LaTeX users
Submit your complete PDF manuscript, TEX, BIB, hi-res figures and tables.

Raw data or code
  • All authors are responsible for making materials, code, raw data and associated protocols relevant to the submission available without delay.
  • Data or code should be submitted to a specialist database if appropriate (e.g. GenBank for sequences, Morphosource for 3D models and scans, etc.).
  • Recommended data or code repositories:

Supplemental Information (SI)

Supplemental Figures Submit as JPG (use maximum quality settings), EPS (for vector images), or PNG (for lossless images).
Supplemental Tables Submit as PDF, DOC, Excel, RTF or TeX / LaTeX files.
Supplemental Articles Submit as PDF.
Supplemental Videos Submit as AVI, MOV, and MP4 files. For widest compatibility, we suggest authors provide video files as 128 kbit/s AAC audio and 480p H.264 video in an MPEG-4 (mp4) format. Regardless of format submitted, authors should double check that their videos open and play in recent versions of both QuickTime and Windows Media Player.
Supplemental Audio Submit as WAV or MP3 files. Please include a legend. Ensure that the files open and play in common audio players such as iTunes or Windows Media Player.
Large Supplemental Data sets Submit in a compressed format (e.g. zip or tar.gz).
  • Supplemental files are those published alongside the article, that are not an integral part of it.
  • Supplemental files may include information or data too large to include in the main article.
  • File naming format: 'Supplemental [Item] S[number]' e.g. 'Supplemental Data S1'.
  • Titles are required for all figures (legends are optional).
  • Supplemental Files should not exceed 50 MB in total (30MB individual file limit). If you need more space please contact us.
  • Use the following style when citing Supplemental files in the text:
    Fig. S1, Table S1, Data S1, Video S1, Article S1, Audio S1.
  • Files intended for review but not publication can be uploaded as Review-only info Supplemental Files.
  • Data or code files must be understandable by an English language reader.

Style Considerations

Units, Symbols, Mathematics, Abbreviations
  • Where possible and appropriate, use the International System of Units.
  • Use discipline specific (non-SI) units only where they are widely adopted within the field.
  • Symbols should be used in lieu of abbreviations for mathematical expressions & defined at first use.
  • Spell out the numbers 1-9 unless used with units.
Manuscript Text
  • Please use clear, unambiguous, technically and grammatically correct English.
  • Articles that are over 45 pages (after typesetting) will incur an additional service charge. This is not an additional APC and discount codes cannot be used to pay for this fee. If you have a manuscript of this extent then please email editor@peerj.com to discuss.
  • The established norms of academic writing within your field should be followed.
  • Either English or American spelling is acceptable provided it is consistently used throughout.
  • Formal results should include clear definitions of all terms and theorems, and detailed proofs.
Tables
  • Table text should be roman black text.
  • Special significance can be placed on certain values in the table (e.g., p-values) by bolding, italicizing or underlining the text. Explain in the table legend what the formatting represents.
Figures
  • Image manipulation:
    • Figures should be minimally processed/manipulated, to add labels, arrows, or change contrast (applied to whole image inc. controls).
    • Do not adjust in any way that could lead to misinterpretation of the information in the original image.
    • Unprocessed figure files and data must be retained for editorial review upon request.
    • Descriptions of changes and hardware and software used to take the images and make adjustments must also be provided.
    • Inappropriate figure manipulation is grounds for article retraction and reporting to institutional oversight boards.
  • Titles and legends below the image can be included in the image file for first review. Titles and legends must be removed for re-review.
  • Include scales, abbreviations, limits etc. in the graphical area the image.
  • Figure legends should be self contained and clearly describe the figure and its contents.
  • When creating figures and images consider the accessibility of your chosen color schemes to those with non-normal color vision. Wherever possible avoid using color alone to distinguish between parts of images. When color is used, we suggest that you consult the following resources to ensure maximum accessibility: J*FLY, Mapbox and ColorBrewer.

Submissions via External Services (e.g. bioRxiv, Overleaf)

PeerJ Computer Science welcomes submissions directly from external services. We have a "one click" submission route from bioRxiv, Overleaf, and Peerage of Science and we encourage authors to take advantage of these linkups. Once your submission is transferred to us, staff will initiate the submission for you and contact you to complete the final information and confirm your submission.

Consideration of Prior Peer Reviews

  • PeerJ Computer Science is happy to use prior peer-reviews which have been conducted on a manuscript (for example if it was reviewed by another journal). Doing so can often increase the speed of our decision, and reduce additional rounds of review.
  • Please obtain written permission from the other journal to use these reviews and upload it as a Supplemental File. For more info contact: support@peerj.com
  • To go this route, authors should alert us in the "Notes to Staff" field that they have prior reviews and they should upload them as an external reviews file type when submitting. They should also provide a document detailing what changes they have made (if any) in light of these reviews. Staff will then contact the other journal to confirm that your reviews are complete and unedited, and to request permission to use them.