Do I need to install anything to edit a PDF file online?

No. Everything runs in the browser you are already using. There is no download, no extension and no plugin to add.

Does it work in every browser?

Any current version of Chrome, Firefox, Safari, Edge, Brave, Opera or Vivaldi will work, on desktop and on mobile. Very old browsers may struggle with larger documents because they lack the memory management newer engines have.

Do I need to be online the whole time?

You need a connection to load the page. After that, the processing happens on your device, so a brief drop in connectivity part-way through will not interrupt the work.

Can I edit the text that is already in the PDF?

No. This tool adds new text on top of the page; it does not rewrite existing content. Editing text already in a PDF requires reflowing the original layout, which is a fundamentally harder problem and needs a full editor.

How do the position numbers work?

Both are in PDF points, where 72 points equals one inch. Distance from the left is measured from the left edge of the page. Distance from the top is measured down from the top edge. An A4 page is about 595 points wide and 842 tall, so 50 from the left and 100 from the top puts text near the upper-left corner.

The text landed in the wrong place. What now?

Nothing has been saved to your device unless you downloaded it, so just adjust the numbers and run it again. Increase the distance from the top to move text further down the page, and the distance from the left to move it right.

Can I add images or shapes?

Not at the moment. Text placement is what this tool does. For a diagonal stamp across the whole page, the Watermark tool is a better fit.

Why did some of my characters disappear?

The standard PDF fonts cover the Latin-1 range. Characters outside it are removed rather than failing the whole operation, and typographic quotes and dashes are converted to plain equivalents first.

Edit PDF Online

Drop text onto any page of an existing PDF and save a new copy.

Drop your PDF file here

or browse your device

A single PDF file, up to 100 MB. Files are processed on this device.

Doing this online means there is nothing to install, nothing to update and nothing to uninstall afterwards. Open this page, add your PDF file, and the edit pdf tool is ready — the same tool, with the same options, that powers every other edit pdf page on this site.

That matters more than it sounds. Desktop PDF software tends to arrive as a large download, ask for administrator rights, install a background updater and then propose a subscription. For a job you might do twice a month, that is a poor trade. An online tool has none of that overhead and is available from whichever computer you happen to be sitting at.

Everything the desktop version of this job needs is here: file validation before anything runs, live progress while it does, clear errors if something goes wrong, a retry button when it does, and a preview of the result before you commit to downloading it.

PDFs are designed to be final, which is exactly the problem when a date is wrong, a reference number is missing, or a form needs a value typed into a box. Opening a full PDF editor for a change that small feels absurd, and most of them want a subscription first.

This tool does one thing well: it places text at a position you specify on a page you specify. Give it the text, the page, the distance from the left edge and the distance from the top, and it writes that text into the document and gives you a new file.

How to edit a PDF file

Add your PDF
Drop in the document you want to change.
Type the text
Enter exactly what should appear on the page.
Choose the page
Page numbers start at 1. Out-of-range values are clamped to the nearest real page.
Set the position
Distance from the left and distance from the top are both in points, where 72 points is one inch. A4 is roughly 595 by 842 points.
Add and download
Press Add text, check the placement in the preview, and adjust if it landed in the wrong spot.

Why use this edit pdf tool

Nothing to install

No download, no installer, no administrator password. The edit pdf tool loads with the page and is ready as soon as you add a file.

Available from any machine

Work computer, home laptop, a borrowed device — the tool is at the same address with the same features and no licence to move across.

Always current

There is no version to keep up to date. Whatever improvements have shipped are what you get the next time you open the page.

Coordinates you can reason about

Vertical position is measured from the top of the page, which is how people actually read a page, rather than from the bottom as the PDF format does internally.

The rest of the document is untouched

Your text is drawn onto the existing page. Nothing is flattened, re-rendered or re-encoded, so the original content keeps its full quality.

Repeatable

Run the tool again on the file you just downloaded to add a second piece of text somewhere else.

Features

Point-accurate placementPosition text anywhere on the page in PDF points.
Top-down coordinatesVertical distance is measured from the top edge, not the bottom.
Adjustable font size6 to 72 point in Helvetica.
Any pageTarget any page in the document by number.
Preview before downloadSee exactly where the text landed before you save it.

When people use this

Correcting a small mistake

Add a corrected reference number or date without going back to whoever produced the original file.

Filling in a flat form

Many PDF forms are just printed boxes with no interactive fields. Place text where the box is and the form is filled.

Adding a note or reference

Drop a case number, an internal reference or a short note onto a page before filing or forwarding it.

Labelling a page

Add a heading or a page label to a document that arrived without one.

Why do this online instead of installing software

Installed PDF software makes sense if you work with documents all day and need features like redaction, preflight or PDF/A validation. For the specific job of getting a edited PDF, it is a lot of machinery for a small task — and licensing usually assumes one machine, which is awkward the moment you are on a different computer.

An online tool inverts that. There is no licence tied to hardware, no version to keep current, and no install step standing between you and the work. Open the page, do the job, close the tab. If you need it again next month from a different device, it is in exactly the same place and behaves in exactly the same way.

The one thing an online tool has historically been worse at is privacy, because "online" usually meant "uploaded to somebody's server". That is not how this tool works. The processing runs inside your browser on your own device, so you get the convenience of an online tool without the file ever going anywhere.

How text placement works

PDF page coordinates start at the bottom-left corner and increase upward, which is the opposite of how nearly everyone thinks about a page. The tool reads the page height and subtracts your distance-from-the-top value from it, so you can specify a position the way you would describe it out loud.

Helvetica is embedded into the document and your text is drawn into the target page's content stream at the resulting coordinates. Everything already on the page stays exactly as it was — this is an additive drawing operation, not a re-render.

Privacy

Your files are not uploaded. When you add a PDF file, your browser reads it from your device into the memory of the tab you are looking at, and the edit pdf operation runs there using your own processor. Nothing is transmitted to any server at any point.

That means there is no file for anyone to store, no retention policy to trust, and no deletion schedule to take on faith. The document exists only in the memory of an open browser tab, and it is released the moment you close it, reload the page, or press start over.

The site uses standard anonymous analytics to count page views and how often each tool is used. Those events record which tool ran and whether it succeeded — never a file name, never file contents, and never anything that could identify a document or the person processing it.

No account is required, so no personal information is collected. There is no profile, no history and nothing tied to an identity, because no identity was ever created.

Security

The strongest security property this tool has is structural: your file never travels anywhere, so there is no transmission to intercept and no server-side copy to breach. This is not a policy that could change — it is a consequence of where the code runs.

You can verify it in about thirty seconds. Open your browser's developer tools with F12, select the Network tab, and use the tool. You will see the page's scripts load — including the PDF libraries, which are fetched on demand the first time a tool runs — and then nothing further. No request carrying your document is ever made.

For a stronger test, disconnect from the network once the page has loaded. The tool will keep working exactly as before, which is only possible because nothing is being sent.

Uploaded files are validated in the browser before anything runs: the extension must match what the tool accepts, the file must not be empty, and it must be within the size limit. Malformed documents produce a clear error and a retry option rather than a silent failure.

What this tool does not do

Being clear about limits is more useful than a feature list that quietly omits them. Existing text cannot be edited or removed, only new text added; images, shapes and freehand annotation are not supported, and text is placed as a single line with no automatic wrapping.

If you need capabilities beyond that — redaction, PDF/A conformance, OCR, or scripted batch processing across thousands of documents — dedicated desktop software genuinely earns its licence fee, and this is not trying to replace it. For the specific job of producing a edited PDF, everything you need is on this page.

Frequently asked questions

Do I need to install anything to edit a PDF file online?: No. Everything runs in the browser you are already using. There is no download, no extension and no plugin to add.
Does it work in every browser?: Any current version of Chrome, Firefox, Safari, Edge, Brave, Opera or Vivaldi will work, on desktop and on mobile. Very old browsers may struggle with larger documents because they lack the memory management newer engines have.
Do I need to be online the whole time?: You need a connection to load the page. After that, the processing happens on your device, so a brief drop in connectivity part-way through will not interrupt the work.
Can I edit the text that is already in the PDF?: No. This tool adds new text on top of the page; it does not rewrite existing content. Editing text already in a PDF requires reflowing the original layout, which is a fundamentally harder problem and needs a full editor.
How do the position numbers work?: Both are in PDF points, where 72 points equals one inch. Distance from the left is measured from the left edge of the page. Distance from the top is measured down from the top edge. An A4 page is about 595 points wide and 842 tall, so 50 from the left and 100 from the top puts text near the upper-left corner.
The text landed in the wrong place. What now?: Nothing has been saved to your device unless you downloaded it, so just adjust the numbers and run it again. Increase the distance from the top to move text further down the page, and the distance from the left to move it right.
Can I add images or shapes?: Not at the moment. Text placement is what this tool does. For a diagonal stamp across the whole page, the Watermark tool is a better fit.
Why did some of my characters disappear?: The standard PDF fonts cover the Latin-1 range. Characters outside it are removed rather than failing the whole operation, and typographic quotes and dashes are converted to plain equivalents first.

Browse every PDF tool, or read the help and FAQ pages. Details of how files are handled are in the privacy policy.