Edit PDF

Add text stamps, shapes, lines and images on top of a PDF, in your browser.

Runs in your browser. Nothing is uploaded — your input is processed on this device and discarded when you close the tab.

Your file

Drop a PDF here or click to browse. One PDF at a time, up to 50 MB. Everything is processed on this device only — no file is uploaded.

Page preview — click the page to place the current item

Previous page Next page

Item to add Text stamp Filled rectangle Straight line Image

Text (for a text stamp)

Text size in points

Colour

Width in points (rectangle and image)

Height in points (rectangle and image)

Image file (PNG or JPEG, for an image item)

Items to add

Apply items and download

This tool is an overlay editor. It adds new content on top of a PDF's pages — a text stamp such as "APPROVED" or a date, a filled rectangle, a straight line, or an image such as a logo or a stamp graphic — each placed on a page you choose, at an exact position you choose. It is built for the small finishing jobs that real documents constantly need: stamping a received invoice, putting a page header on a report that came without one, drawing a box around the paragraph a client must read, or dropping a company logo onto a quotation.

One thing must be plain from the start, because the name "edit" invites a wrong assumption: this tool does not rewrite, move or delete text that is already in your PDF. The original pages stay exactly as they were, and your items are drawn over them. If a word in the original is misspelled, this tool cannot correct it in place — it can only cover the spot and write the replacement above it, and the old word still exists underneath the cover. For removing content so it cannot be recovered, use the Redact PDF tool, which rebuilds the page as an image. Everything here runs in your browser: the file is read from your device, edited in memory, and handed back as a download. Nothing is uploaded to a server.

How to use Edit PDF

1. Add your PDF. Drop one PDF onto the dropzone, or click it to browse. The limit is one file of up to 50 MB at a time, and a damaged or password-protected file is reported by name as soon as it is read.
2. Find the page. The preview shows one page at a time; use Previous page and Next page to reach the page you want to mark. Items are placed on the page currently shown.
3. Choose the item type. Pick Text stamp, Filled rectangle, Straight line or Image from the menu, then set its text, size, colour and dimensions in the fields provided. For an image item, choose the PNG or JPEG file before you place it.
4. Click the preview to place the item. The click point becomes the item's anchor, measured in PDF points from the bottom-left of the page. An item that would hang off the edge is pulled fully inside the page; an item larger than the page itself is refused with an explanation.
5. Repeat and review the list. Every item you place joins the list under the preview, with its type, page and position. Delete any item you placed by mistake — deleting only affects the list, never your original file.
6. Apply and download. Choose Apply items and download. Check the result in your usual PDF reader: the original content and your additions should both be there, and re-running with a corrected list costs nothing because the original never changed.

Features

• Four overlay item types: text stamps, filled rectangles, straight lines, and embedded images (PNG and JPEG).
• Placement on any page, positioned by clicking a rendered preview of the real page — the same pdf.js rendering engine that powers Firefox's viewer — rather than by guessing at numbers.
• Positions are converted from screen pixels to PDF points with the vertical flip done for you: what you click at the top of the preview lands at the top of the page, not the bottom.
• Items that fall partly outside the page are clamped fully inside; items larger than the page are refused, with the reason stated.
• Colours are set per item with a colour picker and applied exactly — a rectangle filled with #ff0000 renders as exactly that red.
• Text stamps use Helvetica, a PDF standard font, at any size from 4 to 200 points.
• A placed-items list with per-item delete, so a session can be built up, corrected and only then applied.
• The original document's pages, text and images are carried through untouched: the overlay adds a new layer of drawing instructions and changes nothing underneath.

Worked example

Start with a three-page A4 document (595 × 842 points per page). Place one text stamp — the words "APPROVED-STAMP" at 24 points in dark red (#b91c1c) — on page 2, at 48 points from the left and 400 points from the bottom. Apply. When the result is opened and its text is extracted, "APPROVED-STAMP" appears on page 2 only: pages 1 and 3 do not contain it, and page 2 still contains every word it had before, because the stamp was added over the page, not merged into its text. Now add a filled rectangle on page 1, from 100 to 300 points across and 400 to 500 points up, filled with #ff0000. Rendered at 72 dpi, the pixel at the centre of that rectangle — 200 points across, 392 screen pixels down from the top — is exactly (255, 0, 0), the red that was picked, while the page outside the rectangle keeps its white background. These outcomes are the ones the tool's automated tests check, so the example and the code cannot drift apart.

Common errors and limitations

• Existing text cannot be edited, moved or deleted. This is an overlay tool: it draws on top of pages, and anything it covers is still present underneath the covering shape.
• Because covered content remains in the file, this tool must never be used to hide personal data for sharing. Use Redact PDF for that; it rebuilds the page as an image so the covered content is genuinely removed.
• One PDF at a time, up to 50 MB. Long documents are previewed a page at a time, and only the pages you place items on change.
• Text stamps are drawn in Helvetica only, in a single line. There is no text wrapping, no rich text, and no font upload.
• Lines are straight and axis-placed from the click point; there are no freehand drawings, arrows or curves in this version.
• Password-protected PDFs cannot be opened here at all: remove the protection in the app that created the file, then add the unprotected copy.
• Annotations, form fields and digital signatures in the original are carried across unchanged; note that adding content to a signed PDF can invalidate its signatures in readers that verify them, as with any editor.

• Trying to fix a typo with a text stamp. The stamp sits on top; the original word remains in the file and in its text layer, so searches will still find the old word. Fix: correct the document in the app that created it, or cover the word with a rectangle and accept that the text layer still holds it — and never share such a file as if the word were gone.
• Expecting the stamp at the bottom because the coordinates said 400. Positions are measured from the bottom of the page upward, as PDFs define them, but the preview click handles the conversion for you. Fix: always place by clicking the preview rather than typing coordinates from a screen measurement, which counts from the top.
• Placing a huge image and having it refused. An item larger than the page cannot be clamped inside it. Fix: reduce the width and height fields so the item fits within the page (595 × 842 points for A4) before clicking.
• Choosing the image after clicking. An image item needs its file selected first, so the tool knows what to embed. Fix: pick the PNG or JPEG in the image field, then click the page to place it.

Frequently asked questions

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