Edit PDF files

Runs on your device — nothing is uploaded

Click where you want something to go and type, drop in a picture of your signature, cover a line you should not be sending, then stamp page numbers across the document. It is layered onto your file rather than rewriting it, and your file never leaves the tab.

How it works

1. Add the PDFDrop the document. The page is drawn at full width so you place things where you mean to, and you can zoom in for fine work.
2. Add what you needPick text, image or white-out from the bar and click the page where it belongs. Drag anything to move it, and choose watermark or page numbering if you want them.
3. ProcessA new file is built with your additions on top. Nothing already in the document is rewritten, so its text stays selectable and its images keep their resolution.

What this editor does, and the one thing it will not

Everything you add here is drawn as a new layer over the existing pages: text boxes, an image such as a signature, filled boxes, a watermark, page numbers. The original page content is never rewritten, which is exactly why this works reliably and why the output is lossless — text you did not touch stays selectable and searchable, and images keep the resolution they came in with.

The thing it will not do is change the words that are already on the page. That is not a limitation of effort but of the format. A PDF has no paragraphs or lines; it stores drawing instructions that place each run of glyphs at an absolute position, in fonts that usually contain only the characters the document already used. Adding a letter can mean embedding a whole different font, and deleting a word does not pull the rest of the sentence across, because there is no sentence to reflow — which is why edited PDFs so often come back looking subtly wrong even from desktop software. If the existing text has to change, edit the document in whatever produced it and export again; then use this page to sign, stamp or annotate the result.

Signing, and filling in a document

There are two ways to sign here, and both are ordinary visual signatures rather than certificate-based digital signatures — which is what the great majority of paperwork actually asks for. If a counter or a portal specifically demands a cryptographically signed document, this is not that, and it will not be.

Typing your name is the quick route: add a text box, pick a script-like face such as Times-Italic, and place it on the signature line. It is legible, obviously deliberate, and fine for internal paperwork. For something that should look like your hand, sign a piece of plain white paper in black ink, photograph it straight on in even light without a shadow across it, and upload that image. A PNG with a transparent background gives the cleanest result, because the paper around the strokes disappears. Then drag it onto the line and use the width field to size it to match the document.

Filling in a form works the same way: add a text box on each blank, type the value, and place it. If the blank sits on top of a dotted line that makes your typing hard to read, put a white-out box over the line first and your text on top of that. It is two steps instead of one, and the result looks like it was typed into the form.

White-out, watermarks and page numbers

The white-out box is honest about what it is: a filled rectangle drawn over whatever is underneath. The content it covers is hidden on screen and in print, but it is still present in the file and still extractable, so it is the wrong tool for redacting anything sensitive. If something must genuinely be gone, remove the page with the Organise tool, or take the information out in the application that produced the document and export it again. Covering a stray line of an old address before you send a form is a fair use; covering an account number and calling it redaction is not.

The watermark is the one you type and nothing else — there is no vendor stamp added anywhere in this tool, and no account upgrade that removes one. Set the wording, size, colour and opacity, and it is drawn on every page: the usual uses are DRAFT, CONFIDENTIAL or COPY before a document goes out, or a client's name across a set of proofs so a leaked copy can be traced to who received it.

Page numbers are stamped on every page and counted from the number you choose, in one of three formats — 3, 3 / 12, or Page 3 of 12 — at the bottom left, centre or right. Because they go on every page, a cover sheet that should not carry a number needs a two-step: number the body of the document, then merge the unnumbered cover in front of it with the Merge tool. The start number is there for the same reason in reverse: continuing a document that already ran to page 40 means starting this one at 41.

Questions

Can I change the words that are already on the page?

No, and it is worth saying plainly rather than burying it. A PDF stores positioned drawing instructions rather than paragraphs, and its fonts usually hold only the characters already in use, so rewriting existing text reliably is a different and much harder problem than adding to it. Additions — text, signature, white-out, watermark, page numbers — are what this tool does, and it does them without disturbing anything else. To change the wording, edit the document in whatever created it and export it again.

Can I sign a PDF here?

Yes, two ways: type your name in a text box, or upload a photo or scan of your signature and drag it onto the line. Both produce a visual signature. Neither is a certificate-based digital signature, so if a portal explicitly demands a cryptographically signed document, this is not a substitute for it.

Can a white-out box be used to hide confidential information?

No — and please do not. It paints a filled rectangle over the area, which hides it on screen and in print, but the original text is still inside the file and can still be extracted or copied. To genuinely remove something, delete that page with the Organise tool, or remove the information in the application that produced the document and export it again.

Can I type in Sinhala, Tamil, Chinese or Arabic?

Not yet. The standard PDF fonts cover Latin characters only, so text using other scripts would need a font file embedded in the document, which this tool does not do. If you type one of those characters the tool will tell you before it builds anything, rather than quietly dropping it. Watermarks and page numbers use Latin digits and are unaffected.

Can I zoom in to place something precisely?

Yes. The zoom control offers fit-to-width plus 100%, 150% and 200%, and the page scrolls inside its own box at those levels. Placing a signature line accurately on a phone is much easier at 150% than at fit-to-width.

Does editing change my original file?

No. Your file on disk is only ever read. A new document is built in memory and offered as a download, so the original is untouched and you can try again as many times as you like.

Can I remove something I added?

Yes. Click it on the page and press the remove button, or select it in the list below the page — nothing is written into a document until you press Process, so undoing costs nothing.

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