LinkedIn Document Ad Specs: Files, Pages and Copy
LinkedIn document ad specs list PDF, DOC, DOCX, PPT and PPTX files with a file size of 100 MB. LinkedIn recommends under 10 pages, with a maximum of 300 pages or one million words, and recommends 70 characters for the headline and 150 for introductory text. PDFs must have consistent page sizes, with multiple layers flattened or merged.
Checked October 2026. Sources are listed at the end of the page.
Prepare the document and its accompanying ad copy as separate parts of the same job. A file can meet the upload specifications while still being difficult to read, so check both technical requirements and the reading experience. The table below separates LinkedIn's recommendations from its document preparation requirements. The workflow then shows how to turn a draft into a reviewed asset without assuming that exporting it makes it ready to advertise.
| Item | LinkedIn specification | What to check |
|---|---|---|
| File types | PDF, DOC, DOCX, PPT, PPTX | Export to a listed format and reopen the exported file. |
| File size | 100 MB | Check the final file size after export, not the size of your editable project. |
| Orientation | Vertical, horizontal or square | Choose the layout that makes your text and diagrams easiest to read. |
| Document length | Under 10 pages recommended; 300 pages maximum or one million words | Treat the recommendation as an editing target, not the maximum allowed length. |
| Headline | 70 characters recommended | Keep the promise specific and consistent with the document. |
| Introductory text | 150 characters recommended | Explain who the document helps and what it covers. |
| PDF layers | Multiple layers must be flattened or merged | Inspect the resulting file for missing or changed elements. |
| PDF page sizes | Fit differently sized pages to the same page size | Review the whole document, including imported pages. |
| Hyperlinks | Use secure hyperlinks | Review the links included inside the document. |
LinkedIn Document Ad Specs: Files, Pages and Copy
Choose a focused document outline
Start with the question your reader needs answered. For example, a buying checklist could cover the decision, the questions to ask and a practical next action. Aim for LinkedIn's recommendation of under 10 pages rather than stretching toward the maximum. Remove material that belongs in a separate guide instead of shrinking all the text to fit.
Build a consistent layout
Choose vertical, horizontal or square orientation and keep the document visually consistent. Use clear headings and readable diagrams. For a PDF assembled from different files, fit differently sized pages to the same page size, as LinkedIn requires. Inspect imported pages individually rather than assuming the cover represents the rest of the document.
Draft and count the accompanying copy
Write a headline that names the document's benefit and introductory text that explains its audience. Use the LinkedIn Ad Character Counter linked below to count the copy, then compare it with the document ad recommendations: 70 characters for the headline and 150 for introductory text. A character count is a copy check, not a check of the document file.
Export and inspect the actual file
Export a supported file type and check its size against the listed 100 MB specification. If you use PDF, flatten or merge multiple layers and review secure hyperlinks. Reopen the exported file and inspect page order, headings, diagrams and any final action you ask the reader to take. Repeat the inspection after making changes.
Use Infinall AI for drafting, then review the result
If you need help writing, select your saved brand in Infinall Chat and ask for a document outline or ad copy. Chat can create document artifacts that you can edit and export, including PDF. Check that export against LinkedIn's requirements yourself. Keep a document or layout editor in the workflow when you need precise control over page dimensions or PDF preparation.
Recommended length is not the maximum length
LinkedIn lists under 10 pages as a recommendation while also stating a maximum of 300 pages or one million words. Those are different decisions: whether the document fits the specification and whether it is worth reading in its current form. For a short educational asset, use the recommendation as a reason to edit. Do not add pages just because there is room. Likewise, the headline and introductory text figures above are text recommendations, not a claim that longer copy is automatically rejected.
Check document rules, not carousel image rules
A document ad needs the document specifications in this guide. Do not substitute a carousel image specification just because your draft looks like a slide deck. Work from the intended format before choosing export settings. For a document, inspect the supported file type, file size, length and PDF preparation requirements together. If your brief actually calls for a carousel ad, use the separate carousel specs guide linked below before preparing the assets.
Where Infinall helps and where a layout editor is better
Infinall AI helps with the writing stage: Chat can use your selected Brand Brain, and document artifacts support editing and exporting. Free and Pro accounts have the same artifacts panel, exports and library; opening, editing and exporting artifacts do not use credits. A dedicated layout or document editor is the better place to make exact page adjustments and inspect the final PDF. Treat AI output as a draft to review, not proof that every LinkedIn requirement has been met. The Infinall file types and sizes documentation explains Infinall's own upload rules, which should not be confused with LinkedIn's ad specifications.
Frequently asked questions
Which file types can a LinkedIn document ad use?
LinkedIn lists PDF, DOC, DOCX, PPT and PPTX. Choose a supported export from your document workflow, then reopen it to check the content and layout before using it.
Do LinkedIn document ads have to be under 10 pages?
Under 10 pages is LinkedIn's recommendation. Its stated maximum is 300 pages or one million words. Keep that distinction clear when deciding how much content your document needs.
Does every PDF page need the same size?
Yes. LinkedIn says PDFs with differently sized pages must be fit to the same page size. It also requires PDFs with multiple layers to be flattened or merged. Check the exported document rather than only the original layout.
Can Infinall AI help make the document?
Infinall Chat can create a document artifact that you can edit and export, and it can use your selected saved brand. You still need to review the file against LinkedIn's document ad requirements and handle any required layout or PDF adjustments.
Sources and checks
Every price, rating and number on this page comes from the source pages below, checked October 2026. Prices and plans change often, so confirm on the vendor's own page before you buy.
- LinkedIn document ad specifications, checked October 2026
- Infinall document artifacts and exports, checked October 2026
- Using a saved brand in Infinall, checked October 2026
- Writing with Infinall Chat, checked October 2026
- Infinall platforms, file types and sizes, checked October 2026
- LinkedIn Ad Character Counter, checked October 2026