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Toolbench

Try: compress pdf, iphone photo, 15% of 240

    PDF tools

    Merge, split, compress, watermark and more. Every one runs in your browser: nothing is uploaded, and there is no account or queue.

    Guides and common sizes

    All 21 PDF tools

    Send it

    Change it

    Get something out

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    Everything here happens on your computer

    A PDF is often the least shareable document somebody owns. Contracts, payslips, medical letters, scans of a passport — the files people most need to merge, split or compress are usually the ones they would least like to hand to a server. Every tool in this drawer reads the file inside the browser tab and writes the result there too. Nothing is uploaded, which is why there is no size cap, no queue and no account.

    That is a real technical constraint rather than a promise: the code that edits your document is JavaScript running on your own machine, so there is no server that could keep a copy even if somebody wanted one.

    Which tool for which job

    Merging and splitting are the two halves of the same operation, and both keep the pages exactly as they are — text stays selectable, quality is untouched, and the result is the same document rearranged. Deleting pages and reordering them work the same way.

    Compressing is the one that changes the file. It re-encodes the images inside the document, which is where the weight of a scan lives; text and vector drawings are left alone. A document that is mostly typed text will barely shrink, because there was nothing heavy in it to begin with.

    Cropping, rotating, watermarking and numbering all add to or reframe the page without touching what is underneath. Cropping in particular only changes which part of the page is displayed — the content outside the crop is still in the file, which matters if you are trying to hide something rather than tidy something.

    What a browser cannot do

    Two honest limits. A scanned PDF holds a picture of words rather than words, so extracting text from one yields nothing — reading it takes OCR, which reads the picture. And converting to Word rebuilds the text, headings and emphasis but not the layout: columns, tables and exact positioning do not survive, because a PDF does not record them in a form a document can read back.