You rename a file to Acme-Proposal-2026.pdf, upload it, and the browser tab says Microsoft Word - Document1. Or a colleague’s name. Or the name of a document you copied the template from two years ago.
The filename and the title are two different things, and readers show you the title.
Where that name comes from
Every PDF carries a set of document properties in its Info dictionary: Title, Author, Subject, Keywords, plus Creator and Producer. When Word, Excel, or a report generator exports a PDF, it fills these in — often with whatever it had lying around, which is how Microsoft Word - Untitled1 ends up in front of your client.
Those properties are what browsers display in the tab, what PDF readers show in the title bar, what file managers and document systems index, and what search engines read when the PDF is on a public site. Renaming the file changes none of them.
See what’s actually in your file
Upload it to View & Edit PDF Metadata and the full document properties display immediately: title, author, subject, keywords, creator, producer, PDF version, creation and modified dates, page count, page size, encryption status, whether the PDF is tagged, and whether it’s linearized for fast web viewing.
Most people find at least one surprise on their first file.
Change what needs changing
Title, Author, Subject, and Keywords are editable, and each field pre-fills with its current value so you can see what’s there before you change it. Rewrite them and download — the pages themselves are untouched. Only the properties change; every page, image, and piece of text stays exactly as it was.
A good title is what you’d want on the tab: Acme Ltd — Proposal, March 2026. Not the filename, not final_v7_REALLY_final.
Author should be the organisation or person you want credited. It’s frequently wrong on documents built from a template.
Subject and Keywords matter if the PDF lives on a website or in a document management system, since that’s what gets indexed.
When this actually matters
- Anything client-facing. A proposal that opens as
Untitled1undercuts the work inside it. - PDFs published on a website. The title is what appears in search results and in the tab, and it’s a real ranking signal for the file.
- Documents going into a DMS or archive. Systems index properties, so a file with an empty or wrong title is one nobody finds later.
- Merged bundles. A merged PDF inherits its properties from the first file in the stack — which is why an application bundle often carries the title
scan0043. - Scans. Files from a scanner have no meaningful title at all. Setting one turns an unfindable
scan0043.pdfinto something searchable.
The privacy side
Properties can leak more than you intend: a previous editor’s name, the software and version that produced the file, an internal project codename. Clearing a field drops the entry from the file rather than leaving it blank-but-present, and there’s a Remove all metadata button to empty every editable field at once. Worth doing before anything goes outside your organisation — alongside locking the file if it’s sensitive.
One limitation
An encrypted PDF has to be readable first. Remove its password with Unlock PDF, then view or edit its properties here.
Ready? Try the free PDF Metadata tool now — no sign-up, no watermark, and your file is never stored.