A file name is the only part of a document most people read before deciding whether to open it, and it is what every filing system sorts on. A folder of scan001.pdf through scan064.pdf tells nobody anything; a folder named for the client, the year and a running number tells them everything. Renaming that many files by hand is an afternoon of clicking, and one slip leaves two files with the same name. This tool takes the whole batch and renames it in one go.
How to use Rename PDF Files
- Add all the PDFs you want renamed. They can be selected together or dropped onto the upload area in one go.
- Type a new name if every file should share one. Leave it empty to keep each file's own name and only add to it.
- Add a prefix, a suffix, or both. A prefix goes in front, which is what governs sorting; a suffix goes at the end.
- Leave numbering on to give each file a sequential number. Set where the count starts and how many digits it uses.
- Select Rename Files and download the ZIP, or the single PDF if you only added one.
How a name is put together
The parts are joined in a fixed order, so the result is predictable and the batch sorts the way you expect.
- Prefix, name, suffix, number: The pieces are assembled in that order and joined with hyphens, so a prefix of 2026, a name of Invoice and numbering from 1 gives 2026-Invoice-01, 2026-Invoice-02 and so on.
- Keeping each file's own name: Leaving the name empty uses each file's existing name in that slot, which is how you add a year to the front of a folder of differently named documents without losing what they are.
- Numbers keep the order: Files are numbered in the order they appear in the list, so drag the rows before processing if the order matters. Padding the number with zeros is what keeps 2 before 10 in a file listing.
- Awkward characters are dropped: Characters a file system dislikes are removed, so a name that would fail to save on Windows or a network share is quietly made safe instead of rejected.
Why the number of digits matters
- Sorting is alphabetical: File listings sort names as text, not as numbers, so file-10 comes before file-2. That single fact is behind most badly ordered folders.
- Padding fixes it: Writing the number as 02 rather than 2 makes the text order match the number order. Two digits is right up to 99 files, three up to 999.
- Choose for the batch you expect: If this is a monthly job that will grow, pick the width for the biggest batch you expect rather than today's, so the numbering stays consistent between runs.
- Starting somewhere other than one: The count can start at any number, which is how a second batch continues from where the first finished instead of colliding with it.
What renaming does and does not touch
- The files are copied, not rebuilt: Nothing inside the documents changes. Pages, text, images, bookmarks, form fields and metadata are all exactly as they were; only the name on the outside is different.
- The title inside stays: A PDF also carries a title in its metadata, separate from its file name. View and Edit Metadata is the tool for that one.
- Duplicates are kept apart: If two files would end up with the same name, the second gets a number added rather than quietly replacing the first.
- Delivered as a ZIP: A renamed batch arrives as one download, which is far more reliable than a burst of separate ones. A single file comes back as a plain PDF.
When people use Rename PDF Files
A folder of scanner output
Files called scan0001 through scan0087 become the client name, the date and a running number, so the folder is readable at a glance.
Preparing a submission
Portals and tribunals often demand a naming convention. Applying it to the whole bundle at once removes the risk of one file breaking the rule.
Archiving by year
Adding a year as a prefix to a folder of otherwise well-named documents keeps them sorted chronologically without losing what each one is.
Limitations to know
Renaming changes the name of the file and nothing else; the title stored inside the PDF's metadata is separate and is not touched. All the files are uploaded together and count towards the same size limit for a single request, so a very large batch may need splitting into two runs. Names are made safe for file systems, which means accented and non-Latin characters in a name may be simplified.
Rename PDF Files: common questions
Will renaming change anything inside my PDFs?
No. The files are copied with a new name and nothing inside them is rewritten. Pages, text, images, bookmarks, form fields, annotations and metadata all stay exactly as they were, and the file is the same size it was before.
Why are my files sorting in the wrong order?
Almost always because the numbers are not padded. File listings sort names as text, so file-10 sorts before file-2. Turn on numbering and set the digits to two or three, which makes the text order and the number order agree.
Can I keep each file's own name and just add to it?
Yes. Leave the name box empty and fill in a prefix or a suffix instead. Each file keeps its existing name with your addition around it, which is the usual way to add a year, a project code or a version word to a folder.
What happens if two files end up with the same name?
The second one gets a number added to keep it distinct. Nothing is overwritten and no file is lost, which is the risk when renaming a batch by hand.
Does this change the title shown when the PDF is open?
No. That title lives in the document's metadata and is separate from the file name, which is why a file called report.pdf can open showing a completely different title. View and Edit Metadata is the tool for changing it.