Headers, footers and tables aren't stored the same way as body text in a Word document, which is why simple find-and-replace tools and quick theme changes miss them. Updating all three across hundreds of documents means reading each one as its own part of the file's structure, not assuming a body-text fix will reach them automatically.
Why headers, footers and tables are the part manual rebrands miss
Ask anyone who's done a rebrand by hand what took longest, and the answer is rarely the body text - it's the parts that don't behave like body text. Headers and footers repeat on every page but live in a different part of the file. Tables carry formatting that often has nothing to do with the document's overall theme. Both get checked last, if at all, because they're easy to assume are "already fine" once the obvious stuff - the cover page, the main heading color - looks right.
Word's structure explained simply: these live differently to body text
A .docx file is a package of separate parts, not one continuous stream of text. The main body is one part. Each header and footer is its own part, and a document can have several - a default header, a different one for the first page, and separate ones again if the document uses section breaks. Tables sit inside the body but carry their own formatting layer on top: shading, border color and weight, and header-row styling, all of which can be set directly on the table rather than inherited from the document's theme.
Practically, this means a tool - or a person - editing "the document" needs to specifically open and edit each of these parts. Touch only the main body and the header, footer and table formatting are left exactly as they were, brand change or not.
This isn't a quirk specific to one version of Word either. It's how the underlying .docx file format has worked for a long time, across desktop Word, Word Online, and Google Docs' Word-compatible export. Any tool claiming to "update the document" without specifically accounting for these separate parts is either handling them correctly under the surface or quietly skipping them - there's rarely a visible warning either way, which is exactly how a rebrand ends up half-finished without anyone noticing until later.
What breaks when people try to fix this with find-and-replace or macros
Find-and-replace run from the body of the document often doesn't reach headers and footers at all, depending on the tool being used to run it - they have to be opened separately, and it's easy to check one header, assume the rest match, and move on. Tables are worse: a color typed into find-and-replace as a hex code won't match a table's shading if that shading was set as a theme color reference, or vice versa.
Macros are the next thing people try, and they can work - for the document they were written against. The trouble is templates drift over time. A macro built around one section layout breaks the moment it hits a document with an extra section break, a header linked to a different style, or a table nested inside another table. Every new shape of document needs the macro checked, and often rewritten, which turns "automate it once" into ongoing maintenance.
There's also a quieter failure mode with both approaches: partial success. A macro or a find-and-replace pass can update most of a document correctly and silently skip the one table that's structured slightly differently, or the one header that's linked rather than typed directly. Nothing errors out - the document just comes out wrong in one specific spot, and it's only caught if someone happens to scroll to that exact page during review.
How a document engine handles all three consistently, every page
The reliable approach reads the document's actual structure first - which parts exist, how many headers and footers there are, where the section breaks fall, which tables carry direct formatting - and then applies the brand change to every part it finds, rather than assuming a single edit will propagate everywhere.
"Headers, footers and tables aren't stored the same way as body text in a Word document, which is why simple find-and-replace tools miss them."
That structural read is also what makes batch processing hold up at volume: the same logic that finds and updates the header on document one finds and updates the header on document 300, whatever shape that particular document happens to be.
This structural approach also scales in a way manual checking doesn't. A person checking headers, footers and tables by hand gets slower and less careful the further they get into a large batch - fatigue is real, and document 280 rarely gets the same attention as document 3. A structural read applies the identical logic to every file regardless of position in the batch, which is the practical reason batch consistency holds up at hundreds of documents rather than degrading toward the end.
What "every page" really means (first page, odd/even, section breaks)
"Every page" sounds like a single setting, but Word documents commonly split headers and footers into several variants: a different header for the first page (common on cover pages and letterheads), separate odd- and even-page headers (common in documents meant to be printed and bound), and a fresh header definition every time a section break resets the layout. A document can easily have four or five distinct header/footer definitions even though it only shows one at a time to someone scrolling through it.
Updating "the header" without accounting for these variants is how a rebrand looks complete on page one and reverts to the old branding by page twelve. Handling this properly means checking for every header and footer definition a document contains, not just the first one found, and applying the same brand change to each.
It's worth checking this specifically after any batch rebrand, manual or automated: open a longer document from the batch, one with a cover page and at least one section break, and page through it rather than only checking the first page. If the brand is consistent from the cover page through to the last page, including any appendices that reset the section numbering, the rest of the batch is almost certainly consistent too, since the same structural read applies to every file.
FAQ
Does this handle documents with multiple sections?
Yes. Section breaks, first-page-different headers, and odd/even variations are read as part of the document's structure and updated consistently, rather than only touching the first header found.
Why do headers and footers need separate handling from body text?
A Word document stores headers, footers and the main body as separate internal parts. Editing only the body text can miss headers and footers entirely unless a tool specifically opens and updates those parts too.
Why do tables need their own pass, separate from a theme color change?
Tables often carry direct formatting - shading and border colors set on individual cells - that overrides the document theme. Changing the theme color doesn't touch that formatting, so tables need to be read and updated as their own structure. See our explainer on Word's internal structure for the fuller technical picture.
Can macros fix headers, footers and tables reliably?
Macros can help, but they're written against one document's structure and often break on the next template shaped slightly differently. Every new shape of document tends to need the macro checked or rewritten, which is ongoing maintenance rather than a one-off fix.