PDF123 · PDF Toolbox
Free Online PDF Tools
PDF123 is an online PDF toolbox with 63 tools to merge, split, compress, convert, edit and secure PDFs, in your browser or through an API.
Or drop files here - multiple files supported
Showing 23 of 63 tools
All tools
Use it from your terminal, AI agent or code
The same tools are available as a command line, an MCP server and a TypeScript SDK.
Command line
Run any tool on local files from a shell or script.
npx @pdf123/cli merge a.pdf b.pdf -o merged.pdfAI agents (MCP)
Give Claude, Cursor and other MCP clients the PDF tools.
claude mcp add pdf123 -e PDFX_API_BASE=https://pdf123.xyz -- npx -y @pdf123/mcpTypeScript SDK
Call the tools from Node.js or Bun with typed methods.
npm install @pdf123/sdkUp and running in three steps
Upload a file
Drop it in, or click to choose one from your device - no account needed.
Pick an operation
Use a recommended action or browse the full tool catalog below.
Download the result
Your processed file is ready in seconds and deleted from our servers right after.
About these tools
Completely free
Every tool on this site is free to use, with no hidden limits on the basics.
No sign-in required
Process files right away - creating an account is optional, not a gate.
Files aren't retained
Uploads are processed and then deleted automatically once your download is ready.
Nothing to install
Runs entirely in your browser and our servers - no desktop app required.
A genuinely full toolset
Organize, convert, edit, secure, and inspect PDFs - not just merge and split.
A practical PDF toolbox
PDF123 is built for everyday document work: editing a line of text in place, combining exports, splitting scans, shrinking attachments, converting formats, OCR on image-only pages, and basic security hygiene. Each tool page explains when to use it, how processing works, and what the limits are — not just an upload box with generic instructions.
Files are processed to complete your request and are not kept as a long-term library. Read About for who operates the site, Privacy for retention and ads, and the Blog for deeper explainers on compression, OCR, and machine-readable publishing.