Edit a PDF in your browser
Add text, images, freehand drawings, highlights and white-out boxes to any PDF page, then download it. No upload, no watermark, no account.
- Runs in your browser
- Files are never uploaded
- Free, no account
Add text, images, drawings, highlights and white-out boxes anywhere on any page. The original text and vectors underneath stay exactly as they were. Everything happens in this browser tab — you can turn off your network connection first and it will still work.
How to edit a PDF
- Drop the PDF onto the box above. It is opened by this browser tab — there is no upload step and no queue.
- Pick a tool: Text, Image, Draw, Highlight, White-out, Box or Line.
- Click or drag on the page. Text objects appear where you click; everything else is drawn by dragging out a shape.
- Switch to Select to move things, drag the corner handle to resize, and nudge with the arrow keys for precision.
- Press Apply, then download. Your original file on disk is never modified.
What "editing a PDF" actually means
This is the thing every PDF editor is vague about, so here it is plainly. A PDF does not contain paragraphs. It contains a content stream that says put this glyph at these coordinates in this font at this size, thousands of times per page, frequently out of reading order and frequently with a single word split across several instructions because of kerning. There is no sentence to click into and no line to reflow.
Editors that advertise "edit existing text" reconstruct a guess at the paragraph structure, let you type into the guess, and then re-lay out the region. When the guess is right it feels magical. When it is wrong — different fonts on one line, a two-column layout, a table, a form built out of underscores — it shifts everything on the page and you cannot undo the damage after saving.
This tool takes the other approach, the one that never corrupts a document: it adds a layer on top. Cover what is wrong with a white-out box, type the replacement, and the result looks and prints correctly while the rest of the page is untouched, byte for byte. It is the same approach a print shop takes with a correction slip, and it is honest about what it is doing.
The seven tools
| Tool | How to use it | What it writes into the PDF |
|---|---|---|
| Text | Click, then type in the panel below | Real text in a built-in font — selectable and searchable afterwards |
| Image | Choose a file, then drag and resize | The original PNG or JPEG bytes, embedded once |
| Draw | Freehand with a mouse, finger or stylus | A stroked polyline with round caps |
| Highlight | Drag across a line of text | A rectangle in multiply blend mode, so words stay readable |
| White-out | Drag over the mistake | An opaque filled rectangle |
| Box | Drag; toggle fill in the panel | A stroked or filled rectangle at your chosen width |
| Line | Drag from one point to another | A single stroked segment |
Rotated and cropped pages
Scanned documents very often carry a /Rotate 90 or /Rotate 270
entry, and many press-ready PDFs have a crop box smaller than their media box. Both break
naive editors: your text lands sideways, or ninety points from where you put it.
Everything you place here is stored in the page's displayed coordinate space and converted at export time using the page's own rotation and crop box, so an object lands exactly where the preview showed it and text on a rotated page comes out upright rather than running down the margin.
Keyboard and accessibility
Every object you add is focusable. Tab to it, then use the arrow keys to move it one point at a time, Shift and an arrow key for ten points, and Delete or Backspace to remove it. The toolbar buttons are ordinary buttons, the colour swatches announce their state, and the progress region is announced politely while a long document is being written.
One point is 1/72 inch, so single-point nudges are the finest adjustment that means anything in a PDF. On a touchscreen, zoom in first — the plus button goes to 300% — and the same drag gestures work with a finger or stylus.
Why nothing is uploaded
Every other free PDF editor sends your document to a server, processes it there and hands back a download link. That is why they cap file sizes, limit you to two or three tasks a day, and need a privacy policy explaining how long your contract sits on their disk.
This page has none of those constraints because there is no server involved. The PDF is parsed by WebAssembly running in your tab, and the edited copy is assembled in your device's memory. You can verify it: open your browser's network tab before you start, or simply turn off your Wi-Fi — the tool keeps working.
Questions
Can I edit the text that is already in the PDF?
No, and no honest browser tool can. A PDF stores positioned glyphs, not paragraphs, so "editing" existing text means guessing at word boundaries, fonts and line breaks — which is why editors that try it reflow your document into a mess. This tool adds a new layer on top instead: cover the old text with a white-out box and type the replacement. The result looks right and prints right, and nothing underneath gets scrambled.
Does editing damage the rest of the document?
No. Your additions are appended to each page's existing content stream, so the original text stays selectable and searchable, vector graphics stay sharp at any zoom, and the file is not re-rendered or recompressed. Only the pages you actually touched change at all.
What fonts can I use?
The fourteen fonts built into every PDF reader — Helvetica, Times and Courier in regular, bold and italic. Because they are built in, nothing is embedded and the file stays small, but they only cover Western European characters. For Greek, Cyrillic, Arabic or CJK text, render the words as a transparent PNG and place them with the image tool.
Is there a page or file size limit?
None that we impose. The work happens on your own processor, so the ceiling is your device's memory. A few hundred pages is comfortable on a laptop; very large scans are happier on a desktop browser than on a phone.
Can I undo a mistake?
Yes — every action is undoable and redoable, up to fifty steps back, and nothing is written to your original file until you press the download button. The file you dropped in is never modified.