PDF Guides & Tutorials
Step-by-step tutorials for every CoolPDF tool — free, browser-based, and private by design.
How to Merge PDF Files Online (Free, No Sign-Up)
Step-by-step: merge PDF files into one document right in your browser. Free, no uploads, no sign-up — reorder, combine up to 20 files, download in seconds.
Open Merge PDFHow to Split a PDF into Pages or Ranges (Free)
Split a PDF into single pages, custom ranges, or equal chunks — free, in your browser. No uploads, no sign-up. Step-by-step with all three split modes.
Open Split PDFHow to Compress a PDF to Reduce File Size
Reduce PDF file size in your browser with three quality levels (72–300 DPI). No uploads, no sign-up — files never leave your device. Free step-by-step guide.
Open Compress PDFHow to Rotate PDF Pages and Save the Result
Rotate PDF pages by 90°, 180°, or 270° and save the change permanently — all pages or only the ones you list, right in your browser. Free, no uploads.
Open Rotate PDFHow to Rearrange, Delete, Rotate PDF Pages
Rearrange PDF pages with drag and drop, rotate or delete pages, and download the result — all in your browser. Free, no uploads, no sign-up.
Open Organize PDFHow to Remove (Delete) Pages from a PDF — Free, No Upload
Delete unwanted pages from a PDF with a visual page picker — mark pages, remove them, download. Free, no uploads, no sign-up, files never leave your device.
Open Remove PagesHow to Extract Pages from a PDF — Free, No Upload
Save selected pages of a PDF as a new document — click the pages you want, extract them in your browser. Free, no uploads, no sign-up, files never leave your device.
Open Extract PagesHow to Convert PDF to JPG or PNG Images
Turn PDF pages into JPG or PNG images at 72, 150, or 300 DPI — free, in your browser, no uploads, no sign-up. Includes DPI and page-range tips.
Open PDF to JPGHow to Convert JPG Images to a PDF File
Turn up to 20 JPG or PNG images into one A4 PDF, right in your browser. Orientation and fit options, no uploads, no sign-up — free forever.
Open JPG to PDFHow to Password Protect a PDF (AES-256)
Password-protect a PDF with AES-256 encryption, right in your browser. Set an open password and recipient permissions — no upload, free, no sign-up.
Open Protect PDFHow to Unlock a PDF You Have the Password To
Step-by-step: remove a PDF password in your browser — the file and password never leave your device. Free, no sign-up; download the result as unlocked.pdf.
Open Unlock PDFHow to Add a Watermark to a PDF Document
Add a text or image watermark to every page of your PDF — tiled or centered, with size, color, and opacity controls — right in your browser. Free, no upload.
Open Watermark PDFHow to Add Page Numbers to a PDF (Free)
Add page numbers to a PDF in your browser: six positions, "1 of N" format, custom start page and font size. Free, no uploads, no sign-up.
Open Page NumbersHow to Convert PDF to Markdown (Local, Free)
Step-by-step: convert PDF to clean Markdown — headings, paragraphs, and lists detected automatically — locally in your browser. Free, no upload, no sign-up.
Open PDF to Markdown5 PDF Tools That Don’t Upload Your Files (2026) | CoolPDF
A fact-checked roundup of PDF tools that process files locally on your device — no uploads, no server copies. Features, limits, and prices compared for 2026.