How to Batch Convert .pub Files to PDF (Whole Archives)

To batch convert .pub files to PDF, copy the archive first, inventory and sort it, then run only the keepers through a local converter one folder at a time: Korva Pro's batch conversion for a whole archive, or free one-file tools for a handful. Spot-check every batch before you file the PDFs, and keep the original .pub files. The goal is not raw speed. It is an archive that still makes sense to whoever opens it in five years.

Publisher archives are rarely neat. A shared folder might hold ten years of bulletins, three versions of the same flyer, half-finished drafts, exported PDFs, old image folders and files named new new final.pub. Convert all of that blindly and you get a second mess, this time in PDF form.

Microsoft Publisher left Microsoft 365 on October 1, 2026. Your .pub files did not go anywhere, but the convenient way to open them did, and converting a large archive one file at a time is where most people stall. The fix is a migration pass rather than a rush job: plan, convert, verify, then store.

Which route fits your archive?

Count your files before you pick a tool. The right route depends mostly on how many files you have and how much they matter.

The rest of this guide walks through the full workflow, whichever row you land in.

Step 1: Make an archive copy first

Before converting anything, copy the full Publisher folder to a safe location. Never work on the only copy. A conversion tool should not change your source files, but a tired human dragging folders around at 11 p.m. absolutely can.

Copy from every place .pub files hide: the office PC, the shared drive, the volunteer’s laptop, old USB sticks and attachments buried in email. Gather them into one working folder, and keep the untouched originals somewhere separate.

Step 2: Inventory what you actually have

You can’t plan a batch you haven’t counted. Search the working copy for every .pub file. On Windows, search the folder for *.pub. On a Mac or Linux machine, a Finder search or find . -name "*.pub" in a terminal does the same job.

Then build a plain spreadsheet with one row per file:

• file name and folder
• year or date, from the name or the modified date
• what it is: bulletin, newsletter, flyer, certificate, label, form
• whether it holds personal data such as names, addresses or member details
• a decision: convert, keep editable, or skip

This takes an hour for a few hundred files, and it pays for itself twice. It tells you which route in the table above fits, and it becomes the index of your finished archive.

While you list files, watch for duplicates. flyer.pub, flyer final.pub and flyer final2.pub are usually one document. Keep the newest, check the modified dates, and mark the rest as skips.

Step 3: Decide what deserves conversion

You don’t have to rescue every draft. Prioritize:

• recurring bulletins, newsletters, certificates, labels and forms
• public-facing pieces you may need to reprint
• documents with photos, member data or historical value
• templates volunteers still copy from year to year
• anything that exists only as .pub

Skip duplicates, empty shells, drafts already replaced by later versions, and files that already have a trusted PDF beside them. Most organizations find the live set is small: a bulletin, a newsletter, a flyer template and a few certificates. Everything else is archive, and archive usually needs only a PDF.

Step 4: Set up folders and a naming rule

Decide where everything goes before the first conversion, not after the 200th. A simple structure works:

Publisher Archive/
  originals/
    2023/
    2024/
  converted-pdf/
    2023/
    2024/
  editable-kva/
  needs-review/
  skip-or-duplicates/

The .pub files live under originals, untouched. PDFs go under converted-pdf, mirroring the same year folders. Living templates that still need an editable future go to editable-kva. Anything that fails or looks wrong goes to needs-review, so one stubborn file never blocks a whole batch.

For names, keep one rule and apply it everywhere:

• keep the original base name, so harvest-supper.pub becomes harvest-supper.pdf
• add a date at the front if the name lacks one: 2023-10-14-harvest-supper.pdf
• use lowercase and hyphens, and drop words like “final” and “new”
• if you rename, record the old name in the inventory spreadsheet

Matching names matter more than pretty names. Anyone should be able to go from a PDF back to its source file in seconds.

Step 5: Batch convert with Korva Pro

Korva is a desktop app for Windows 10+, macOS 12+ and 64-bit Linux. It opens .pub files directly and works fully offline, with no account, so nothing in your archive is uploaded.

Start free. Opening and editing any .pub costs nothing, and a new user can export one complete project repeatedly. Pick your hardest file for this test: the busiest layout, the most photos, the most accented text. If Korva recovers that one well enough for your needs, the rest of the archive will be easier.

For the archive itself, Korva Pro’s Convert multiple .pub → PDF action handles many files in one pass, locally. Pro is a one-time US$49 purchase for one computer, with no subscription. Besides batch conversion, it adds unlimited project exports, editable .kva saves, mail merge and master pages.

A rhythm that keeps the work manageable:

1. Convert one folder per run, such as one year or one document type.
2. Move the finished PDFs into the matching converted-pdf folder.
3. Spot-check the batch with the checklist below.
4. Mark each file in your inventory as done, needs review or failed.
5. Move to the next folder.

Converting by folder keeps each batch small enough to check properly, and it means a problem file points you straight to the folder it came from.

Free ways to convert multiple .pub files, and their limits

Not everyone needs a paid batch tool. If your archive is small, or you already have the right software, these routes cost nothing.

The free browser converter

Korva’s free .pub to PDF converter runs in your browser with WebAssembly. The file is read on your device and never uploaded, and there is no account. It handles one file at a time, up to 40 MB.

For five or ten files, that is a perfectly good workflow. For 300 files it becomes a long afternoon of clicking, renaming downloads and moving them into folders. It also converts the file as-is, so there is no chance to fix a layout before export.

Korva’s desktop Free tier

The desktop app opens and edits any .pub for free, and a new user can export the first complete project as often as needed. That makes it ideal for your single most important document, or for testing recovery quality before you pay for anything. It is not built for bulk work. Later projects and batch conversion are what Pro is for.

Publisher, if you still have a working copy

Publisher is still the most faithful converter for its own format, because it wrote it. It left Microsoft 365 on October 1, 2026, but a copy already installed on a Windows PC may keep opening and printing files for a while. If you have one, use it now: open each keeper, then choose File > Export > Create PDF/XPS Document.

For a large archive, Publisher can be driven by a script, which is an option if you are comfortable automating Office applications and testing the output. Just treat any old install as borrowed time. You can’t cleanly reinstall it, and one dead laptop ends the plan.

LibreOffice from the command line

LibreOffice can open .pub files through its bundled libmspub import filter, and its command-line converter accepts wildcards. From a terminal in your working folder, something like this converts every file in one go:

soffice --headless --convert-to pdf --outdir converted-pdf *.pub

On Windows and macOS, soffice usually isn’t on your path, so run it from the LibreOffice program folder. It is free, local and runs on Windows, macOS and Linux. The catch is quality. libmspub’s import is hit-or-miss: simple, text-heavy files often come through cleanly, while busy layouts can arrive with pictures shifted or dropped. On the command line you never see each page before it becomes a PDF, so check the output even more carefully than usual. Our LibreOffice Draw comparison covers the import in more detail.

Online batch converters

Some web converters accept multiple files. Every one of them works by uploading your documents to someone else’s server. That may be fine for a folder of public flyers. It is a poor fit for an archive with member lists, donor names, student details or client drafts, and one sensitive file can easily hide in a folder of hundreds. Our guide to offline .pub to PDF conversion explains how to tell a local converter from an upload one.

Step 6: Verify the output

Don’t call a batch done until you’ve opened some of it. For high-value documents, check every file. For a large low-risk archive, check the first and last files from each folder, a few picked at random, and anything that looks odd in the file list.

Run each sample through this checklist:

• Page count. Does the PDF have as many pages as the original?
• Photos. Is every picture there, and in roughly the right place?
• Complete text. Read the last paragraph of each story. Overflowing text is the easiest thing to miss.
• Accents and symbols. Check names like José or Müller, plus curly quotes, dashes and © signs.
• Fonts. Fonts missing on the converting computer get replaced, so check that headings still fit their boxes.
• Margins and edges. Look for text cut off at the page edge or crowded against the trim.
• Page size. Confirm the PDF is US Letter or A4 as intended. Our A4 vs US Letter guide covers what breaks when the size is wrong.
• File size. Sort the converted folder by size. A PDF far smaller than its neighbors often means images went missing.

Mark each result in the inventory spreadsheet. The notes you make here are what someone will rely on later, when they wonder whether a PDF can be trusted.

Step 7: Handle the files that fail

In any real archive, a few files will fail or come out rough. Move them to needs-review and keep the batch moving. Then work through them by symptom.

The file won’t open at all. Check that it really is a Publisher file and not a zero-byte leftover from a failed copy. Look for another copy on a backup or a different machine. If Publisher still runs anywhere, try it there.

Pictures are missing. Korva’s importer brings across every picture embedded in the .pub. If a picture was linked to an outside file rather than embedded in the .pub, look for it in the original image folders, then place it again in the editor before you export.

The layout drifted. .pub is a proprietary binary format with an undocumented page-geometry stream, so very complex layouts, or fonts that aren’t installed, can shift things. Open the file in the Korva desktop app, drag the boxes back where they belong and export that file on its own.

Text is cut off or overflowing. Usually a replaced font is a little wider than the original. Nudge the font size or widen the box.

The file is too big for the browser. The browser converter stops at 40 MB. Use the desktop app for anything larger.

If a template is too tangled to be worth fixing, rebuilding it can be faster. Our free printable templates come as PDFs and as editable .kva files, and one may be close enough to start from.

Step 8: Archive as PDF, editable .kva, or both

Saving a PDF is not the same as migrating a document. A PDF is a finished page: excellent for viewing, emailing and reprinting, and awkward to edit. Decide per document what it needs.

A simple rule: finished pieces get a PDF only. Living templates get a PDF and an editable .kva. Everything keeps its original .pub. Future tools may read the format better than today’s, and storage is cheap.

For a template you’ll keep updating, open the .pub in Korva, check the imported page once, and save it as a .kva. From then on you edit the .kva, not the .pub. Our Publisher migration guide covers rebuilding templates and training the people who use them.

Step 9: Store the archive clearly

Put the PDFs somewhere obvious, with the same folder structure as the originals:

originals/2023/bulletin-2023-12-24.pub
converted-pdf/2023/bulletin-2023-12-24.pdf
editable-kva/bulletin-template.kva

Save the inventory spreadsheet at the top of the archive folder. Keep at least two copies of the whole archive in different places, such as a shared drive and an external disk. Tell the next person where it lives. An archive nobody can find is only slightly better than no archive at all.

If you are just starting the move away from Publisher, read the full Microsoft Publisher migration guide first. If you only need one file today, the shorter convert .pub to PDF guide is the fastest path. When you’re ready to test your hardest file, download Korva for Windows, macOS or Linux.