Free PDF Tools Online
Browser-based PDF tools that handle merging, splitting, compressing, converting, watermarking, password protection, and full annotation editing — without uploading your documents to a server.
10 free tools — browser-based, no sign-up required.
PDF Editor
NEWAnnotate, sign, and edit PDF files in your browser
JPEG to PDF
Convert JPEG images to PDF documents
PDF to Word
Convert PDF files to editable Word documents
Word to PDF
Convert Word documents to PDF format
PDF Splitter
Split PDF files into separate pages
PDF Merger
Merge multiple PDF files into one
Compress PDF
Reduce PDF file size without losing quality
HTML to PDF
Convert HTML pages to PDF documents
PDF Password
Add or remove password protection from PDFs
PDF Watermark
Add watermark to PDF documents
About FlexyPdf PDF Tools
Working with PDF files used to mean either buying a desktop application like Acrobat Pro or uploading sensitive documents to an unknown server. The PDF tools on FlexyPdf are designed to make that trade-off unnecessary. Each tool runs inside your browser using JavaScript libraries such as pdf-lib and PDF.js, which means contracts, tax returns, medical records, and anything else you load stays on your device — there is no upload step and no temporary copy on a server somewhere.
The collection covers the everyday workflows people actually need: combining several scanned pages into one document, extracting a single page from a long report, cutting a PDF down to fit an email attachment limit, converting between PDF and Word so a colleague can edit it, adding a watermark or signature, and protecting a finished file with a password. The PDF Editor itself supports text, highlights, shapes, drawings, and signature placement, with undo/redo and page management. None of the tools impose page count limits, watermark output files, or require an account.
Compatibility is a deliberate priority. The output of every tool is a standards-compliant PDF that opens correctly in Adobe Acrobat, macOS Preview, Foxit, Chrome's built-in viewer, and mobile readers. If a document was scanned at a specific resolution or contains form fields, those are preserved through the conversion. For very large files the tool processes in chunks so older laptops do not run out of memory, and you can cancel a long operation at any time.
Who uses these tools
A few of the recurring use cases we hear about from FlexyPdf visitors.
Office and operations teams
Merging signed contract pages, compressing reports for email, redacting drafts before sharing with clients.
Students and researchers
Combining lecture slides into study packs, extracting specific pages from textbooks, converting submission templates from PDF to Word.
Freelancers and small businesses
Adding watermarks to portfolio samples, password-protecting invoices and proposals, generating signed PDF agreements without enterprise software.
Legal and compliance
Working with confidential documents in a way that never sends a file to a third-party server — a hard requirement for many privacy policies.
Frequently asked questions
Are the PDF tools really free, or is there a hidden limit?
They are free with no daily quota, file count cap, or watermark on the output. The site is funded by display advertising on tool pages, not by gating features.
How is privacy actually enforced?
For every PDF tool listed here, the file is read by JavaScript running in your browser and processed in-memory on your device. There is no upload request to FlexyPdf servers — you can verify this by watching your browser's network tab. When you close the tab, the file is gone.
What is the maximum file size I can work with?
There is no hard server-side limit because nothing is uploaded. The practical limit is the memory available on your device — most modern laptops and phones handle PDFs up to a few hundred megabytes without issue.
Can these tools replace Adobe Acrobat Pro?
For day-to-day tasks like merging, splitting, compressing, converting, annotating, signing, and password-protecting, yes. For advanced prepress, OCR on scanned image PDFs, or large-scale form automation, a dedicated desktop tool may still be a better fit.