How to Make a PDF Searchable
Scanned PDFs are just images — Ctrl+F won't find anything. By applying OCR (Optical Character Recognition), SublimePDF adds a hidden searchable text layer so you can search, copy, and index the content.
Follow the step-by-step instructions below, then use the free tool directly — no registration or download required.
Open Tool →How to Make a PDF Searchable — Step by Step
Upload scanned PDF
Open the OCR tool and upload your scanned or image-based PDF.
Select language and run OCR
Choose the document language and start the OCR process.
Download searchable PDF
The tool creates a new PDF with invisible text overlaid on the original images — fully searchable.
Pro Tips
- 💡 The original visual appearance is completely preserved
- 💡 OCR works best on clean, high-resolution scans (300+ DPI)
- 💡 Multi-language documents may need multiple OCR passes
Privacy & Security
All processing happens directly in your browser. Your files are never uploaded to any server — they remain on your device throughout the entire process. SublimePDF uses WebAssembly technology for fast, secure, client-side processing.
Works Everywhere
This tool works on any modern browser — Chrome, Firefox, Safari, or Edge — on desktop, tablet, or mobile. No software to install. PDF is an open ISO standard supported by all major platforms.
How to Make a PDF Searchable — FAQ
Does OCR change how my PDF looks?
Can I OCR a very long document?
Related Guides
How to Convert Scanned PDF to Text
Scanned PDFs are essentially images — you can't select or search the text. OCR (Optical Character Recognition) technology converts these image-based PDFs into searchable, editable text. SublimePDF's OCR tool handles this conversion right in your browser.
How to PDF Accessibility Tips
Making your PDFs accessible ensures that people who use screen readers, magnifiers, or other assistive technologies can consume your content. Accessibility isn't just good practice — it's required by law in many contexts (ADA, Section 508, WCAG). An accessible PDF includes proper heading structure, alternative text for images, tagged content, and sufficient color contrast so everyone can read and navigate your documents.