PDF tools that respect your privacy

PDFs, handled properly

Almost nobody wakes up wanting to "manage PDFs". You want to send one file instead of twelve, shrink the scan that will not attach to the email, or sign the thing without printing it. The twenty two tools above exist for those exact moments, merge, split, compress, convert, edit and secure, and every one of them runs in your browser, on your device, with your file never uploaded anywhere. That is not a marketing line; it is the architecture. The code runs locally, so there is no server on our end that could see your documents even if it wanted to.

The tools are grouped by the job you are doing. Organize is for page level surgery: merging, splitting, reordering, rotating, numbering. Optimize shrinks files that are too big to send. Convert moves between PDF and Word, images and text in both directions. Edit updates what is inside, watermarks, signatures, metadata. Security locks a file with a password or removes one you already know. Most real tasks need two groups in sequence, compress a scanned contract, then protect it, so it pays to know what lives where.

Organize: one file instead of twelve

The most common PDF job in the world is also the simplest: several files that should be one. A job application with a CV, cover letter and certificates as separate attachments looks disorganised; merged into a single PDF in the right order, it looks deliberate. Merge PDF handles that in seconds — drop the files in, drag them into order, download one document. The reverse job is just as common: a 60-page report where you only need pages 12–18. Split PDF extracts exactly the range you need instead of making you email the whole thing.

The quieter Organize tools solve the annoyances. Scanned a stack of pages upside down? Rotate fixes individual pages without touching the rest. Need pages 2 and 5 swapped, or page 9 deleted entirely? Organize PDF gives you the thumbnail grid to rearrange and remove. Adding page numbers before sending a long document is a small courtesy that makes you look competent, "see page 14" only works if the pages are numbered. And N up printing (two or four pages per sheet) is the trick for lecture slides: a 40 slide deck becomes 10 sheets of paper you can actually annotate.

Optimize: when the file will not send

Scanned PDFs are the usual culprit. A phone scan of a ten page contract at full resolution easily hits 12 to 15 MB, and the email limit is 25 MB total while half the upload portals cap at 10. Compress PDF re encodes the images inside at a sensible quality and typically cuts a scan by 60 to 80%. That 14 MB contract becomes 3 MB and reads identically on screen. The honest caveat: compression cannot invent detail, so a blurry scan stays a blurry scan, just smaller.

Two specialist optimizers deserve a mention. Grayscale PDF strips the colour from scans, most office documents do not need it, which shrinks files and prints cheaper. Resize PDF normalises mixed page sizes, the classic result of merging a phone scan with a desktop export; one uniform page size looks professional instead of patched together. A common mistake is compressing an already compressed PDF twice and wondering why it barely shrinks: like images, PDFs have a floor, and the second squeeze mostly adds damage.

Convert: getting your content back out

PDFs are where documents go to become uneditable, which is exactly why the Convert group exists. Somebody sends you the "final" version and then asks for changes. PDF to Word gives you back an editable document instead of a retyping exercise. It handles straightforward layouts well; heavily designed pages with text boxes everywhere will need tidying, so check the result before you trust it. PDF to Text and PDF to Image cover the other extractions: plain text for quoting and searching, page images for slides and thumbnails.

Going the other direction is often the smarter move. Images to PDF turns a set of phone photos, receipts, whiteboard notes, a signed page, into a single proper document instead of a zip of JPEGs. Text to PDF does the same for anything you typed: paste it in, get a clean paginated PDF out. The pattern worth remembering is images to PDF then compress: photos straight from a phone make a bloated PDF, so run Compress on the result and you get the small file you actually wanted.

Edit and protect: sign it, stamp it, lock it

The Edit group handles the last mile jobs. Sign PDF lets you draw or type a signature and place it on the document, no printing, no scanning, no photographing a signature with your phone like it is 2012. Watermark PDF stamps DRAFT, CONFIDENTIAL or your company name across pages, which is cheap insurance when a document is going to circulate beyond your control. The metadata tools (view and edit) handle the invisible layer: author, title, creation date. Before sending a CV anywhere, it is worth checking the metadata does not say something embarrassing, like the previous employer's name in the author field.

Security is straightforward and honest about its limits. Protect PDF locks the file with a password you choose; anyone without it cannot open it. Unlock PDF removes a password you know, useful when a bank sends a protected statement every month and you are tired of typing it. What it will not do is crack a password you have forgotten or were never given; that is someone else's document, and the tool rightly refuses. Flatten PDF belongs in this conversation too: it bakes form fields and annotations into the page, so the filled in form you send cannot be quietly edited after it leaves your hands.

No daily limits, no accounts, no watermarks

Most free PDF sites ration you: three merges a day, one compressed file per hour, a watermark unless you pay. The limits exist because their servers do the work and each file costs them money.

Here the work happens in your browser, on your device. There is no per file server cost to recover, so there is nothing to ration, merge, compress, convert and sign as much as you need, with no account, no daily counter and no watermark on the output.

PDF habits worth stealing

• Compress before you email, not after the bounce. A 14 MB scan will fail on half the portals you meet; a 3 MB one sails through.
• Merge first, then optimise. Compressing twelve small files individually wastes your time, make one document, then shrink it once.
• Flatten filled forms before sending. An unflattened PDF form can be edited by the recipient; a flattened one is a finished document.
• Check metadata on anything going to a stranger. CVs, quotes, proposals. The author field has ended more than one negotiation awkwardly.
• Sign once, reuse. Draw your signature carefully the first time and save the image; every future signature takes ten seconds.
• Never upload sensitive documents to a random converter site. If the tool needs your file on its server to work, that is the wrong tool, everything here runs on your device.