A searchable PDF lets you press Ctrl+F and actually find words — instead of staring at a frozen image. Here are the best tools to create one, ranked by accuracy, speed, and price.
Frequently Asked Questions
What is a searchable PDF?
A searchable PDF has a hidden text layer added by OCR (Optical Character Recognition) so you can use Ctrl+F or Cmd+F to find words, copy text, and highlight passages — just like a normal document. Scanned PDFs without OCR are image-only and offer none of that.
How do I make a scanned PDF searchable for free?
Upload your scanned PDF to PDF24 (pdf24.org) or iLovePDF and use their free OCR tool. Both add a searchable text layer at no cost, with no watermarks. For a mobile workflow, scan directly with [Scanjet](https://scanjet.app) and export a searchable PDF from the app.
Does a searchable PDF look different from a regular scanned PDF?
No — the two look identical. The difference is invisible: a searchable PDF has a hidden text layer beneath the page image. You won't see any change, but you can now select, copy, and search text.
What is the best free tool to create a searchable PDF?
PDF24 is the best free option for desktop users — no file size limits, no watermarks, and a Windows desktop app that processes files locally. For online use, iLovePDF and Smallpdf are both solid free choices. For mobile, Scanjet scans and exports searchable PDFs directly.
Can I make a PDF searchable on my phone?
Yes. The Scanjet app on iPhone scans any document and exports a searchable PDF with built-in OCR in 23 languages — no desktop required. See our [guide to scanning on iPhone](/blog/scan-to-pdf-iphone/) for more detail.