# LinkedIn Carousel Tester Canonical page: https://depost.ai/tools/linkedin-carousel-tester Drop in your carousel PDF to see it the way LinkedIn shows it, at desktop and phone width, and to check it against LinkedIn's limits: 100 MB, 300 pages, and every page the same size. It also measures the smallest text on a phone. The file stays in your browser. Free to use, with no account needed. ## How to test a LinkedIn carousel 1. **Drop in your PDF.** Export the carousel as a PDF from your design tool, then drop it into the tester or click to choose it. 2. **Click through the slides.** Use the arrows to move through the carousel, and switch between Desktop and Phone to see both widths. 3. **Read the checks.** Each check says whether the file passes and what to change if it does not: size, pages, page size, shape, text size, layers, and links. 4. **Fix and test again.** Change the design, export a new PDF, and drop it in again until it says Ready to post. ## LinkedIn carousel limits Read on LinkedIn Help on 6 October 2026. Source: [Upload and share documents on LinkedIn](https://www.linkedin.com/help/linkedin/answer/a518909). - File size: up to 100 MB. - Pages: up to 300. - File types: PDF, PPT, PPTX, DOC, DOCX. LinkedIn recommends PDF. - Page size: every page the same size. LinkedIn publishes no pixel size; 1080 × 1080 and 1080 × 1350 are common. - A PDF with multiple layers must be flattened or merged, and links should be secure (https). ## Questions people ask ### How do I test a LinkedIn carousel before posting? Drop the PDF into the tester. It shows each slide inside a LinkedIn post at desktop and phone width, so you can click through it the way a reader will, and it checks the file size, the page count, the page sizes, layers, links, and the smallest text. Nothing is uploaded. ### What size is a LinkedIn carousel in 2026? LinkedIn does not publish a pixel size for carousel pages. Two shapes are common: square, such as 1080 × 1080, and 4:5 portrait, such as 1080 × 1350. What LinkedIn does require is that every page in the PDF is the same size. ### What is the LinkedIn carousel PDF size limit? LinkedIn Help says a document cannot exceed 100 MB and 300 pages. The supported file types are PDF, PPT, PPTX, DOC, and DOCX, and LinkedIn recommends converting to PDF for the best quality. ### How many slides should a LinkedIn carousel have? LinkedIn allows up to 300 pages and gives no recommended number. The tester does not judge the count. Use as many slides as the idea needs, with one point on each. ### How big should the text on a carousel slide be? Big enough to read on a phone, where a slide is about 360 pixels wide. The tester measures the smallest text in your PDF at that width and flags anything under 12 pixels. That number is our guide, not a LinkedIn rule. On a 1080-pixel-wide slide it works out to text of about 36 pixels or more. ### Why does the tester say the text cannot be measured? Some design tools save each slide as one picture, or turn the letters into shapes, so the PDF holds no text to measure. That is fine for LinkedIn. Switch the preview to Phone and read every slide yourself. ### Can I upload a PowerPoint as a LinkedIn carousel? Yes. LinkedIn accepts PPT and PPTX, and turns them into the same swipeable document. It recommends PDF for the highest quality, and says videos and animations in a document are shown as still images. ### Is my PDF uploaded anywhere? No. The PDF is opened and measured in your browser. It is not sent to our server or anyone else’s. ## More free tools - [Every free tool for LinkedIn and X](https://depost.ai/tools) --- Cite as Depost AI (https://depost.ai/tools/linkedin-carousel-tester). Index of every page: https://depost.ai/llms.txt. Full reference: https://depost.ai/llms-full.txt.