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PDF Tools

Merge PDF Files Online (Free, No Uploads)

Combine multiple PDF documents into a single file directly in your browser. Reorder pages, keep your files private, and download your merged PDF in seconds.

Runs in your browser. Nothing you enter is uploaded. Last updated
Drop PDF files here or click to choose Select up to 50 PDF files. Processed entirely in your browser; nothing is uploaded.

Frequently asked questions

Are my PDF files uploaded to your server?

No. All processing occurs locally in your browser using client-side JavaScript. Your files never leave your device.

What is the file limit?

You can combine up to 50 PDF files or roughly 100 MB total in a single batch, depending on available device memory.

Does this preserve bookmarks and forms?

Page visuals and text content are preserved identically. AcroForm interactive form fields are flattened to ensure visual fidelity across all PDF readers.

Aspect Ratio Calculator

Find the aspect ratio of any width and height, and calculate a new width or height that keeps…

Base64 Encoder

Encode text or a file to Base64 in your browser, with UTF-8 support and an optional URL-safe alphabet.

Base64 Decoder

Decode Base64 (standard or URL-safe) back to readable UTF-8 text, with clear errors for invalid input.

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