HermitFile

Merge PDFs into one file, without uploading them

Drop the files in, put them in the order you want, and take back a single PDF. The parser runs in your browser — the documents never leave your machine.

Your PDFs are never uploaded. They are read and rewritten on your device and never sent anywhere.
Drop PDFs here
or click to choose · any number of files · combined top to bottom

Files

    Top to bottom is the order they will be joined. Use the arrows to rearrange.

    Rotate

    Rotation is stored as a page attribute, so nothing is re-rendered and no quality is lost.

    Result

    Order is whatever you say it is

    Files combine top to bottom, and the arrows move them. Drop them in any order and fix it here rather than renaming everything to 01-, 02- first.

    Rotating does not re-render anything

    A PDF page carries a rotation attribute. Turning a page sets that number — it does not rasterise the page and draw it again. Text stays selectable, vectors stay sharp, and the file does not grow. Tools that rotate by re-rendering turn a crisp document into a picture of a document.

    Password-protected files are refused, not guessed

    If a PDF is encrypted, this tool says so and stops. It does not try to break the password. Open the file in a reader you already trust, save an unprotected copy, and merge that.

    Nothing is uploaded, and that matters more for PDFs

    PDFs are where the contracts, bank statements, medical letters and signed forms live. Every mainstream merge tool asks you to upload those to a server and trust a retention promise — and in March 2025 the FBI's Denver field office warned that criminals were using free online file converters to deliver malware. This page has no server to upload to. The parser runs in your own browser, and the page's security policy blocks it from opening a connection to anywhere but this site. Here is how that is enforced.

    The engine loads only when you use it

    Reading an arbitrary PDF needs a real parser, and a real parser is a few hundred kilobytes. It is not downloaded when the page opens — only when you drop a file. If you landed here by accident, you paid for a page of text and nothing else.

    All HermitFile tools

    Resize to exact KBHit a pixel size and a KB limit at the same time, without the picture being shrunk behind your back. Crop & rotateCut an exact rectangle by dragging or by typing the numbers. Rotate, flip, and never enlarge. Convert formatWebP, AVIF, PNG, JPG and more. Transparency gets the colour you choose instead of turning black. Images to PDFCombine photos into one PDF that lands under the KB limit the portal demands. Merge PDFsJoin several PDFs into one, in the order you choose, and rotate pages losslessly. Split PDFPull out a page range, or break a document into one file per page.

    Every one of them runs in your browser. Nothing you open is uploaded.