The best free online PDF tools (no uploads, no sign-up)

What makes a free PDF tool actually free (and private)

Most "free" PDF sites upload your file to their server, process it there and hold it for some retention window you never see. The real cost is your document. Carbide's tools take the opposite approach: the page loads once, then all the work — reading pages, reordering, re-saving — happens locally in your browser. Nothing is uploaded, so there is nothing to leak, retain or sell.

That design also removes the usual catches. Because there is no server doing the heavy lifting, there is no reason to gate features behind an account, stamp a watermark on your output or cap you at two files per day.

• No uploads — files are processed on your device and never leave it.
• No sign-up, no daily limits, no watermarks on the output.
• Works on any modern browser — desktop, tablet or phone.

Merge PDF files into one document

Combining files is the single most common PDF task, and the Merge PDF tool keeps it to three steps: pick your PDFs, drag them into the order you want, and save. The tool reads each file locally, stitches the pages together in your chosen order and hands you back one document.

The result is a single PDF at the original quality — no recompression, no watermark, page order exactly as you arranged it. It is ideal for assembling a report from separate chapters, combining scanned pages into one file, or packaging invoices for a single send.

Split a PDF and pull out only the pages you need

The reverse job is just as common: you have a 40-page document and only need pages 5 to 12. The Split PDF tool takes a page range — or several — and produces clean, separate PDFs from them. Because the split happens on your device, even a confidential document stays confidential.

Scanned upside-down or sideways? Run the pages through Rotate PDF first, then split. The expected result: each output file contains exactly the pages you asked for, correctly oriented, ready to share on their own.

Turn photos into a PDF — and pages back into images

Receipts, whiteboard photos and ID scans usually need to travel as a PDF. The Image to PDF tool converts one or many images into a single document — you choose the order, and each image becomes a page. It is the fastest way to send a set of photos as one tidy attachment.

The opposite direction is covered too: PDF to Image renders each page of a PDF as a high-quality image, which is exactly what you need when a slide, form or diagram has to go into a chat, a presentation or a social post.

Add page numbers before you share

A merged document is much easier to discuss when everyone can say "look at page 7". The PDF page numbers tool stamps clean, consistent numbers onto every page — you pick the position and format, it does the rest, and the output is a properly numbered document that looks finished rather than assembled.

If you want the full workflow — merge, split, convert and number, end to end — the step-by-step PDF guide walks through each task with the exact clicks.

How to pick the right tool for the job

Each tool does one thing well, so choosing is simple — match the task to the tool:

• Several files into one → Merge PDF.
• One file into parts, or extract a range → Split PDF.
• Photos or scans into a document → Image to PDF.
• Pages needed as pictures → PDF to Image.
• Sideways scans → Rotate PDF; a finished look → PDF page numbers.

Frequently asked questions