PDF guides and tutorials
Step-by-step guides for common PDF tasks. Each guide links to the specific tools you need, explains what to expect, and is honest about limitations.
By category
- Organize PDFMerging, splitting, rotating, reordering and deleting pages.
- Compress & OptimizeReducing file size, hitting target limits, removing metadata.
- Convert PDFWord, Excel, PowerPoint, image formats and back.
- Edit PDFAdding text, images, shapes and annotations.
- PDF SecurityProtecting, unlocking, watermarking, redacting and signing.
- Page & LayoutPage numbers, headers, footers, margins, N-up printing.
- OCR & AdvancedRecognising text, comparing documents, metadata tools.
- PDF ImagesConverting PDFs to images and extracting images from PDFs.
Popular guides
- How to Merge PDF FilesCombine documents in the right order without uploads.
- Compress PDF Without Losing QualityWhat downsampling does and when compression is safe.
- How to Convert PDF to WordWhen text extraction works and when you need OCR.
- How to Protect a PDF with a PasswordAES encryption and password best practices.
- How to Make a Scanned PDF SearchableOCR step-by-step with realistic accuracy expectations.
- How to Add Page NumbersPosition, format, starting number and page range.
How to use OmniPDF
Every OmniPDF tool runs in your browser. There is no upload, no account, no rate limit. The guides on this page assume you have the file on your device and can select it with the tool's drop zone. If a tool needs a specific library (like Tesseract.js for OCR), the tool page loads it automatically.
All tools work on desktop and mobile. On phones, expect slower processing for OCR and compression; the tool warns you before starting a slow job.