How to review a PDF properly: proofing brochures, reports and decks

PDFs are where mistakes become expensive. A typo on a website can be fixed in a minute; a typo in 5,000 printed brochures can’t. A wrong figure in a board report undermines everything around it. And a sales deck with last year’s pricing will be forwarded far further than you’d like.

Proofing a PDF well isn’t about reading more carefully. It’s about reading differently — in focused passes, with a clear way to mark issues, and a process that makes sure every correction actually lands in the next version.

Before you start: know what you’re reviewing

Ask three questions before you read a single word:

What stage is this? A first draft wants feedback on structure and message. A final proof wants typos and errors only. Rewriting paragraphs at the final-proof stage resets the timeline.
What’s the output? Print and screen PDFs have different checks (bleed and colour for print; links and file size for screen).
Who else is reviewing, and who decides? If legal, brand and the subject expert all review, agree who resolves conflicts.

Then get the right file. Confirm the version number or date, and make sure everyone is reviewing the same one.

Proof in passes, not all at once

The most reliable way to catch errors is to read the document several times, each time looking for one kind of problem. Your brain is bad at checking spelling, numbers and layout simultaneously.

Pass 1: Structure and message

Skim the whole document.

Does the order make sense? Is anything missing or duplicated?
Does each section do what it’s supposed to?
Are headings consistent in wording and level?
Does the cover, contents page or summary match what’s inside?

Pass 2: Facts and figures

Check everything that could be objectively wrong.

Names, titles and spellings of people and companies
Numbers, percentages, currencies and units — and whether totals add up
Dates, days of the week and deadlines
Phone numbers, addresses, URLs and email addresses
Product names, prices and plan details against the current source
Claims that need a source or legal approval

Cross-check numbers against the original data, not against your memory. If a chart and the text show the same figure, make sure they agree.

Pass 3: Language

Now read for spelling, grammar and style.

Spelling and typos (read slowly; try reading backwards for short text)
Consistent spelling conventions (UK vs US English), capitalisation and hyphenation
Consistent terminology — the same thing called the same name throughout
Repeated words, missing words, sentence fragments
Tone that matches the brand and audience

Pass 4: Layout and visuals

Look at the document as a designed object.

Alignment, margins and spacing are consistent
No widows or orphans (single words or lines stranded at the top or bottom of a column)
Images are sharp, correctly cropped and captioned
Charts are labelled and readable
Page numbers, running headers and footers are correct
Brand colours, logo usage and fonts follow guidelines

Pass 5: Output-specific checks

For print:

Correct page size and page count (often a multiple of four for bound documents)
Bleed included where images run to the edge
Important content kept clear of the trim and binding
Images high enough resolution for print
Colours set up as the printer requires

For screen:

Internal links (contents, cross-references) jump to the right pages
External links open the right destination
File size is reasonable for email
Text is selectable and searchable
Document title and metadata are set

How to mark up a PDF clearly

Finding the error is half the job. The other half is describing it so the designer can fix it in seconds.

Point at the exact spot. Comment on the word, line or image, not on the page in general. “Page 7” makes the designer search; a pin on the word makes it obvious.

Give the exact correction. Don’t write “fix this sentence” — write the sentence as it should read.

Unclear	Clear
“Typo here”	“‘recieve’ → ‘receive’”
“Wrong number”	“Revenue should be £4.2m, not £4.8m (see finance report, tab 2)”
“This doesn’t read well”	“Suggest: ‘We cut delivery times in half by moving to two warehouses.’”
“Image is off”	“Image is cropped through the speaker’s head — use the wider version”

One issue per comment. Bundled corrections get partially fixed.

Label the type. Mark corrections that are errors (must fix) separately from suggestions (consider). At the final-proof stage, ask reviewers to raise errors only.

Don’t edit the source text in the PDF itself. Unless your workflow is set up for it, comments are safer than direct edits — the designer needs to make changes in the source file anyway.

Managing review rounds

PDF projects often go through three to five versions. Without a system, corrections get lost between them.

Number every version. v1, v2, v3 — or a date. Put it in the filename and, ideally, in the footer.
Collect all comments in one place. Not one PDF with comments, one email with corrections and a phone call with “a couple of tweaks”.
Close each round. Set a deadline, then consolidate and send corrections in one go.
Check corrections against the new version. For every comment from the last round, confirm it’s fixed in the new file. Then mark it resolved.
Only look for new issues in changed areas during late rounds, unless something big moved.

A tool that keeps versions and comments together makes step 4 much easier. In ClientTweak, for example, you can upload a new version of a PDF to the same project and keep its version history, and reviewers can comment from a share link without needing an account.

Proofing different kinds of PDF

The passes above apply to everything, but each document type has its own traps.

Brochures and print marketing

Check every price, offer and expiry date against the live campaign
Make sure QR codes scan and point to the right, working page
Check folds: content shouldn’t run across a fold awkwardly, and panels should read in the right order when folded
Confirm legal small print is present and legible at print size

Reports and whitepapers

Every figure in the text matches the tables and charts
Chart axes, units and sources are labelled
Footnote and reference numbers run in order and point to the right notes
The executive summary reflects the final findings, not an earlier draft

Presentation decks exported to PDF

Slide numbers are correct and present on every slide
Speaker-only notes and hidden slides haven’t been exported
Animations that revealed content step by step still make sense as static pages
Fonts embedded correctly — substituted fonts often shift line breaks

Forms and contracts

Fields line up with their labels and are big enough to fill in
Clause numbering and cross-references are correct
Names, dates and amounts are consistent across every page
The latest approved wording from legal is used

Proofreading tips that actually work

Print it, or change the view. Errors you’ve skimmed past on screen jump out in a different format or zoom level.
Read aloud. Especially for headlines, slogans and short copy.
Use a ruler or cursor to slow down and read line by line.
Check the bits nobody reads: captions, footnotes, legal lines, back covers, spines.
Check things that were changed late extra carefully — rushed edits introduce new errors.
Get a fresh pair of eyes for the final pass. The author is the worst proofreader of their own work.

A copyable PDF proofing checklist

Document: 
Version: 
Stage: Draft / Final proof / Print-ready
Output: Print / Screen / Both

[ ] Structure and order make sense; nothing missing
[ ] Names, titles and company names correct
[ ] Numbers, totals, currencies and units checked against source
[ ] Dates, contact details and URLs correct
[ ] Spelling, grammar and consistent terminology
[ ] Headings, page numbers, headers and footers correct
[ ] Images sharp, cropped well and captioned
[ ] Charts labelled and consistent with the text
[ ] Brand fonts, colours and logos correct
[ ] Print: size, page count, bleed, safe area, image resolution
[ ] Screen: links work, file size reasonable, text searchable
[ ] All previous-round corrections verified

The short version

Agree the stage and output. Proof in focused passes. Point at the exact spot and give the exact correction. Keep every comment in one place, number every version, and verify last round’s fixes before signing off. It takes a little longer than “have a quick look” — and it’s much cheaper than a reprint.