Edit PDF Free: Fill, Sign and Annotate, No Upload

Step 1 — open the editor. Drop in your PDF and click “Open the editor”. The whole document opens full-screen: every page in one scrolling column, with a toolbar of placement tools along the top. Nothing to configure first — the editor is the workspace.

Step 2 — place what the document needs. Pick a tool and click the page. Text lands where you click and you type straight into it; checkmarks and crosses drop onto boxes; a cover drags across anything that should be hidden, in white, black or blur; the pen draws freehand; and the signature pad lets you draw once and place the result exactly where it belongs. Everything you place can be dragged, resized, recoloured or deleted, on any page, with undo throughout.

Step 3 — done, then save. Click “Done” to come back with your edits held, and “Save the edited PDF” to write them permanently into the file. The result card shows what was placed and offers “Read it”, so you can page through the finished document before deciding to keep it. Your original file is never modified.

Text. Click anywhere and type. Multi-line works with Enter, four colours, and text scales from small annotations to headline size — drag the corner grip or use the size buttons. What you type becomes real, selectable text in the saved PDF, not a picture of text.

Checkmarks and crosses. One click each, sized for the tick boxes on real forms, resizable when a form disagrees about how big a box should be.

Cover. Drag a rectangle over anything that should not be visible — an old address, a price column, a paragraph that does not apply. Three finishes: white to blend into the page, black for the classic redaction look, or blur, which saves a blurred snapshot of that region over itself — the softer look you see in shared screenshots. Read the section below about what covers are not, before using any of them on anything sensitive.

Freehand ink. A pen for circling a clause, striking through a line, or making the margin note a printed form never left room for.

Your signature. Draw it once on the signature pad — mouse, finger or stylus — and click the page to place it. It is trimmed tight to the ink and lands where a signature line expects it. Drawn here, kept here: the signature never leaves your device.

Images. Place a logo, a stamp, or a photographed signature from your files. JPG, PNG and WebP all work, and transparency is preserved.

This editor does not rewrite the text that is already inside the PDF, and that is a design decision worth explaining, because the sites that claim to do it are quietly making a trade you should know about.

The text in a PDF is typeset with fonts that are usually embedded in a trimmed-down form — often carrying only the exact letters the document uses. To let you retype a sentence, an editor has to reconstruct that font or substitute another, re-lay-out the paragraph, and hope the difference does not show. It almost always shows: a slightly wrong typeface, shifted spacing, a reflowed line that pushes the layout around. Even the best-known editing sites do this imperfectly, and browser-based attempts fare worse.

So this tool draws a harder line honestly: everything you place goes on top of the page, and the page underneath is never touched. That covers what people actually bring to a PDF editor — filling in forms, signing, dating, ticking, annotating, covering — and it means the tool can never corrupt your document’s layout, fonts or content. If you genuinely need to rewrite a document’s own text, the right tool is the application that made it; if you only have the PDF, covering the old text with whiteout and typing the correction over it is exactly what this editor is for.

This matters, so it gets its own section: a cover — white, black or blur — hides content from view; it does not remove it from the file.

A cover is drawn over the page, and everything under it disappears from sight and from print. The blur variant is no different: it saves a blurred picture of the region on top of the region, and looking blurry is not the same as being gone. The text underneath still exists inside the PDF — someone who copies all the text out of the file, or opens it in an editor of their own, can recover what the cover hides. That is true of the equivalent feature on every overlay-based editor, including the well-known ones; the difference is whether the tool tells you.

Use covers for what they are good at: tidying a form, hiding a price column in a customer copy, softening a name in a screenshot, covering the paragraph that does not apply. Do not rely on them to permanently remove genuinely sensitive information — account numbers, medical details, names in legal documents. True redaction removes the underlying content itself and is a job for dedicated redaction software, and any document that has been through real redaction should be checked by selecting all its text afterwards.

The entire editor runs in your browser tab. The pages you see are rendered on your device, the elements you place live in your device’s memory, and the saved PDF is written by an engine running in the same tab. There is no server, no queue, no account, and no copy of your contract, form or ID anywhere but your own machine — which is precisely what you want for the documents people most often need to fill and sign.

It is built on the open-source pdf-lib engine for writing the edited file, with PDF.js — the engine inside Firefox’s own viewer — drawing the pages. Both run as JavaScript in this tab.

The claim is checkable in under a minute: open your browser’s network tab and edit away — no request carries your document, because no request is made. Or load the page, switch to airplane mode, and keep editing.

The well-known editing sites are capable tools. The differences are where your document goes, what the free tier permits, and what happens to the text layer.

The honest trade-off: a server-based editor can attempt existing-text rewriting and form-field creation, which this tool does not offer. For filling, signing and annotating — the overwhelming majority of what people open a PDF editor to do — there is no gap, and your document stays yours.

My text looks slightly different in the saved file. The editor shows your text in your system’s Helvetica-style font and saves it in the PDF-standard Helvetica; on some systems the two differ by a hair’s width. Position and size are preserved — check the result with “Read it” before saving, which is what the button is for.

“This PDF is password-protected.” Encrypted files are refused rather than mangled. Open the file with its password in your PDF reader, save an unlocked copy, and edit that.

I placed something on the wrong page. Delete it (select it, press Delete or use the bin button) and place it again — or just drag it if it only needs to move within the page. Ctrl+Z undoes the last change, step by step.

The editor feels slow on a very large scan. A 300-page scanned document is a lot of pixels. Pages render as you scroll rather than all at once, so give the column a moment — and consider running the document through Compress PDF first, which makes heavy scans dramatically lighter to work with.

The save dialog never appeared. On Firefox and Safari there is no dialog; the edited file goes straight to your downloads folder.

Is this PDF editor really free?

Yes, completely. No task limits, no page limits, no watermark on the output, no premium tier holding back the signature tool. Your device does the processing, so there is nothing for us to meter and charge for.

Is my PDF uploaded to a server?

No. The document is opened, edited and saved entirely in your browser. You can verify it: watch the network tab while editing, or switch to airplane mode after the page loads and keep working.

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

No — this editor places new content on top of the page and never rewrites what is underneath. Rewriting existing text requires reconstructing the document’s embedded fonts and layout, which browser tools cannot do reliably; the practical workaround for correcting a value is whiteout over the old text with your correction typed on top.

Can I fill in a form that has no fillable fields?

Yes — that is this editor’s main job. Type on the blank lines, tick the boxes with the checkmark tool, add the date, and place your signature. The saved file looks exactly like a properly filled form.

How do I sign a PDF with this editor?

Choose the signature tool, draw your signature on the pad with a mouse, finger or stylus, and click the page where it should go. It can be moved and resized like anything else, and it is flattened into the page when you save. The signature is drawn and stays on your device.

Does whiteout permanently remove what it covers?

No. A cover — white, black or blur — hides content from view and from print, but the text underneath remains inside the file and can be recovered by copying the file’s text out. For genuinely sensitive information use dedicated redaction software — the section above explains the difference.

Will the recipient need anything special to open the edited file?

No. Everything you place is flattened into a standard PDF — no layers, no annotations that need a particular reader, nothing that can be accidentally moved or removed later. It opens in any PDF reader exactly as you saved it.

Can I edit a password-protected PDF?

Not directly. The editor refuses encrypted files rather than producing broken output. Remove the password in your PDF reader first, then edit the unlocked copy.

Does it work on my phone?

Yes — placing, dragging and resizing all work by touch, and the signature pad is finger-friendly. A large screen is more comfortable for long documents, but nothing about the editor requires one.

Editing is one of the tools in the PDF toolbox, all built the same way. If signing is the whole job, Sign PDF does exactly that with a live click-to-place preview. To remove or reorder whole pages before filling anything in, organize pages shows every page on a thumbnail grid. And a heavy scanned form is much lighter to edit after a pass through Compress PDF.