PDF Tools
Free PDF tools
16 tools for merging, splitting, rotating, watermarking, numbering, inspecting and creating PDFs — all running inside your browser.
Why these run in your browser
A PDF is often the most sensitive file someone owns: a contract, a payslip, a medical letter, a passport scan. Every tool here parses and rewrites the file on your own device, so nothing is uploaded, queued on a server or logged. That is also why they keep working with the network off — and why there is no file size limit beyond your own memory.
Work with an existing PDF
These read a PDF you already have and write a new one. No dependencies, nothing to download.
Create a PDF from scratch
Generate a finished document from text or a few fields, using only the standard PDF fonts.
Look inside a PDF
Report on structure, page geometry, fonts and metadata without changing anything.
Needs a rendering engine
Turning pages into pictures means interpreting fonts and vector paths, so these two download a renderer on first use — once, cached afterwards.
What these tools deliberately will not do
- Encrypted PDFs are refused rather than half-parsed. If a file needs a password, remove it in the application that created it first.
- Bookmarks, form fields and annotations are not carried through a merge. Rebuilding the page tree from scratch is what makes the output reliably valid; reconciling outline trees from several documents is where most mergers produce broken files.
- There is no text editing, and there cannot be. PDF text is positioned glyphs in subset fonts with no concept of reflow. Anything advertising "edit PDF text" either runs OCR or renders the page and overlays a box. The watermark and page-number tools do the honest version of that: they append a content layer.
- Only the standard PDF fonts are used when creating documents — Helvetica, Times and Courier — so nothing is embedded and output stays small. Scripts outside Western European ranges cannot be represented without embedding a font, and the tools say so.
Frequently asked questions
Are my PDFs uploaded anywhere?
No. The file is read, parsed and rewritten by your own browser. Nothing is transmitted, which is why these tools work offline once the page has loaded and why they are safe for contracts and financial documents.
Is there a file size limit?
No fixed limit. Because the work happens on your device, the practical ceiling is your available memory rather than an upload cap. Very large documents are slower but they are not rejected.
Does merging or splitting reduce quality?
No. Page content streams and embedded images are copied byte for byte — nothing is re-encoded or recompressed, so a merged or split page is bit-identical to the original.
Why do two of these need a download?
Merging, splitting and rotating only rearrange the file's structure, which needs no rendering. Turning a page into an image means interpreting fonts, vector paths and colour spaces — that is a full rendering engine, and it cannot be written small. Only the two tools that need it fetch it, and only on first use.