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theseus/bundled-addons/pdf-editor/editor.html
Local Dev 10c83a1431 feat(pdf-editor): type on the page, keep more than one signature, move what you drew 
Three things the editor made you work around.

Text was typed into a dialog and then placed, so you chose a size and a
weight for words you could not see against the page they were going on.
The click now opens a caret where you clicked, in the font, size and
colour the words will have, with the style bar over it; double-clicking a
stamp reopens it in place. Lining a CSS line box up with a PDF baseline is
measured from the font's own metrics, not guessed.

A signature lived in a single slot. There was nowhere to keep initials as
well as a name, nowhere to change the one you had, and reaching for the
tool again simply stamped the first one — which is the same fault three
times: one slot. It is a library now, with redraw, rename and delete, and
the choice is made when the tool is picked up, so placing stays one click.
An existing single signature is carried into it rather than dropped.

The mark you had just drawn could be resized by its handles and not moved
by its middle, because only the select tool let marks be hit-tested at
all. The SELECTED mark now takes a press whatever tool is armed. A press
anywhere else still draws, and an unfilled shape is still grabbed by its
outline — the same rule select has always followed.

Also: words default to dark ink rather than highlighter yellow, which was
unreadable on white and is now impossible to miss, since you watch
yourself type it.
2026-09-27 13:16:07 +02:00

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>PDF Editor</title>
<link rel="stylesheet" href="vendor/pdfjs/web/pdf_viewer.css">
<link rel="stylesheet" href="editor.css">
</head>
<body data-empty="1">
<!-- Top bar: document identity on the left, destructive/close actions right.
Same split as the screenshot editor's topbar. -->
<div class="topbar">
<button class="btn wide" id="open" title="Open a PDF (Ctrl+O)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M2 5h4l1.5 2H14v6H2z"/><path d="M2 5V3h5"/></svg>
<span>Open</span>
</button>
<span class="sep"></span>
<span class="docname" id="docname">No document</span>
<span class="spacer"></span>
<button class="btn wide" id="convert" title="Convert this document to an editable Word file" disabled>
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M3 2h6l4 4v8H3z"/><path d="M9 2v4h4"/><path d="M5.5 8.5l1 3 1.5-3 1.5 3 1-3"/></svg>
<span>Convert to Word…</span>
</button>
<button class="btn wide primary" id="save" title="Save a copy (Ctrl+S)" disabled>
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M8 2v9M4 7l4 4 4-4M2 14h12"/></svg>
<span>Save a copy</span>
</button>
<button class="btn danger" id="discard" title="Close this tab without saving (Esc)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M4 4l8 8M12 4l-8 8"/></svg>
</button>
</div>
<!-- Tool bar. `.tool-cluster` centres the drawing groups so the view
controls can right-anchor without the tools crowding the left edge. -->
<div class="toolbar" id="toolbar">
<div class="tool-cluster">
<div class="tgroup" role="group" aria-label="Tools">
<button class="tool active" data-tool="select" title="Select — move or delete a mark, select text (V)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M3 2l4 11 1.6-4.4L13 7z"/></svg>
</button>
<button class="tool" data-tool="highlight" title="Highlight — drag across text (H)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M3 12h10"/><path d="M5 9.5l4.5-6.5 3 2L8 11.5z"/></svg>
</button>
<button class="tool" data-tool="underline" title="Underline — drag across text (U)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M4 2v5a4 4 0 0 0 8 0V2"/><path d="M3 14h10"/></svg>
</button>
<button class="tool" data-tool="strikeout" title="Strike through — drag across text (K)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M4 3.5h8"/><path d="M8 3.5V12"/><path d="M2.5 8h11"/></svg>
</button>
<button class="tool" data-tool="pen" title="Pen — freehand (P)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M2 14c1-3 3-6 6-8s5-3 6-3l-3 4c-2 1-4 3-6 4s-2 2-3 3z"/></svg>
</button>
<button class="tool" data-tool="rect" title="Rectangle (R)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5"><rect x="2.5" y="3.5" width="11" height="9"/></svg>
</button>
<button class="tool" data-tool="ellipse" title="Ellipse (O)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5"><ellipse cx="8" cy="8" rx="5.5" ry="4"/></svg>
</button>
<button class="tool" data-tool="line" title="Line (L)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M3 13L13 3"/></svg>
</button>
<button class="tool" data-tool="arrow" title="Arrow (A)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round"><path d="M3 13L13 3M13 3H8M13 3v5"/></svg>
</button>
<button class="tool" data-tool="text" title="Text stamp (T)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M3 3h10M8 3v10M6 13h4"/></svg>
</button>
<button class="tool" data-tool="edittext" title="Replace the document's own text (E)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M2 4h7M5.5 4v7"/><path d="M11.5 3.5l2 2L9 10l-2.5.5L7 8z"/><path d="M2 14h12"/></svg>
</button>
<button class="tool" data-tool="signature" title="Signature stamp (G)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"><path d="M2 11c2 0 3-7 4.5-7S8 10 9.5 10 12 6 13.5 6"/><path d="M2 14h12"/></svg>
</button>
<button class="tool" data-tool="redact" title="Redact — drag a box over content to remove it" data-warn="1">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5"><rect x="2.5" y="4.5" width="11" height="7" fill="currentColor"/></svg>
</button>
</div>
<div class="tgroup" role="group" aria-label="Colours">
<button class="swatch active" data-color="#ffd400" style="background:#ffd400" title="Yellow"></button>
<button class="swatch" data-color="#ff3b30" style="background:#ff3b30" title="Red"></button>
<button class="swatch" data-color="#0aa8ff" style="background:#0aa8ff" title="Blue"></button>
<button class="swatch" data-color="#2bd97c" style="background:#2bd97c" title="Green"></button>
<button class="swatch" data-color="#1a1f2b" style="background:#1a1f2b" title="Ink"></button>
</div>
<div class="tgroup" role="group" aria-label="Widths">
<button class="width" data-width="1.5" title="Thin"><span class="dot" style="width:4px;height:4px"></span></button>
<button class="width active" data-width="2.5" title="Medium"><span class="dot" style="width:7px;height:7px"></span></button>
<button class="width" data-width="4.5" title="Thick"><span class="dot" style="width:11px;height:11px"></span></button>
<button class="btn" id="toggle-fill" title="Fill shapes as well as outline them">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5"><rect x="2.5" y="3.5" width="11" height="9"/><path d="M2.5 9.5h11v3h-11z" fill="currentColor" stroke="none"/></svg>
</button>
</div>
<div class="tgroup" role="group" aria-label="History">
<button class="btn" id="undo" title="Undo (Ctrl+Z)" disabled>
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M3 8c0-3 2-5 5-5s5 2 5 5-2 5-5 5"/><path d="M6 5L3 8l3 3"/></svg>
</button>
<button class="btn" id="redo" title="Redo (Ctrl+Shift+Z)" disabled>
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M13 8c0-3-2-5-5-5S3 5 3 8s2 5 5 5"/><path d="M10 5l3 3-3 3"/></svg>
</button>
</div>
</div>
<div class="tgroup zoomgroup" role="group" aria-label="Zoom">
<button class="btn" id="zoom-out" title="Zoom out (−)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M3 8h10"/></svg>
</button>
<select id="zoom" title="Zoom">
<option value="page-width">Fit width</option>
<option value="page-fit">Fit page</option>
<option value="0.5">50%</option>
<option value="0.75">75%</option>
<option value="1">100%</option>
<option value="1.25">125%</option>
<option value="1.5">150%</option>
<option value="2">200%</option>
<option value="4">400%</option>
</select>
<button class="btn" id="zoom-in" title="Zoom in (+)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M8 3v10M3 8h10"/></svg>
</button>
<button class="btn" id="toggle-rail" title="Show or hide the page thumbnails">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5"><rect x="2" y="2" width="7" height="12"/><rect x="11" y="2" width="3" height="5"/><rect x="11" y="9" width="3" height="5"/></svg>
</button>
</div>
</div>
<div class="body">
<!-- Scroll container. pdf.js's own CSS keys off #viewer .page, and reads
--scale-factor from the container, so the structure below mirrors what
the pdf.js viewer builds. -->
<div class="viewerContainer" id="viewerContainer">
<div id="viewer" class="pdfViewer"></div>
<div class="dropzone" id="dropzone">
<div class="dz-inner">
<svg viewBox="0 0 48 48" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round">
<path d="M12 6h16l8 8v28H12z"/><path d="M28 6v8h8"/><path d="M24 22v12M19 29l5 5 5-5"/>
</svg>
<div class="dz-title">Drop a PDF here</div>
<div class="dz-sub">Drop pictures instead and they become the pages. Drop several PDFs and they join up.</div>
<div class="dz-actions">
<button class="tile" id="start-open" type="button">
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round">
<path d="M6 3h8l4 4v14H6z"/><path d="M14 3v4h4"/><path d="M9 12h6M9 16h6"/>
</svg>
<span class="tile-t">Open a PDF</span>
<span class="tile-s">Read it, mark it up, fill it in, sign it</span>
</button>
<button class="tile" id="start-images" type="button">
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round">
<rect x="3" y="5" width="14" height="11" rx="1.5"/><circle cx="7.5" cy="9" r="1.3"/>
<path d="M3.5 14l3.5-3 3 2.5 2.5-2 4 4.5"/><path d="M19 9v10H8"/>
</svg>
<span class="tile-t">Pictures to PDF</span>
<span class="tile-s">One page per picture, in the order you pick</span>
</button>
<button class="tile" id="start-merge" type="button">
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round">
<path d="M4 4h7v7H4z"/><path d="M13 13h7v7h-7z"/><path d="M11 7.5h4a2 2 0 0 1 2 2V13"/><path d="M15 11l2 2 2-2"/>
</svg>
<span class="tile-t">Join PDFs</span>
<span class="tile-s">Several files, end to end, as one document</span>
</button>
</div>
</div>
</div>
</div>
<!-- Page rail. Thumbnails are draggable to reorder; each carries rotate
and delete buttons. -->
<aside class="rail" id="rail">
<div class="rail-head">
<span id="rail-count">0 pages</span>
<button class="fbtn" id="restore-pages" hidden title="Bring back every deleted page">Undo deletes</button>
</div>
<div class="rail-list" id="rail-list"></div>
</aside>
</div>
<div class="footer">
<span class="fstat" id="status">Ready</span>
<span class="spacer"></span>
<span class="fstat" id="pageinfo"></span>
</div>
<!-- Modal shell, reused by the redaction warning, the signature pad and the
text-stamp prompt. One at a time; `data-modal` names the open one. -->
<div class="scrim" id="scrim" hidden>
<div class="modal" id="modal-redact" hidden>
<h2>About redaction</h2>
<p>A redaction box hides content visually. On its own it does <strong>not</strong> remove the
text underneath, which stays extractable by anyone who copies from the file.</p>
<p>To actually remove it, this editor rebuilds each redacted page as an image when you save.
That page's text stops being selectable and any form fields on it become static. Pages you
did not redact are untouched.</p>
<label class="check"><input type="checkbox" id="redact-flatten" checked>
<span>Rebuild redacted pages as images when saving (recommended)</span></label>
<div class="mrow">
<button class="btn wide" id="redact-cancel">Cancel</button>
<button class="btn wide primary" id="redact-ok">Use the redaction tool</button>
</div>
</div>
<div class="modal" id="modal-sign" hidden>
<h2 id="sign-title">Your signatures</h2>
<!-- The library. Each one is stored as lines, not a picture, so a
thumbnail is the same drawing at a smaller size. -->
<div id="sign-library">
<p class="mhint">Pick one to place, or draw another. They are kept in this browser,
as lines rather than pictures, so they stay sharp at any size.</p>
<ul class="siglist" id="sign-list"></ul>
<p class="mhint" id="sign-empty" hidden>Nothing saved yet.</p>
<div class="mrow">
<button class="btn wide" id="sign-new">Draw a new one</button>
<span class="spacer"></span>
<button class="btn wide" id="sign-close">Cancel</button>
</div>
</div>
<!-- The pad, shown for a new signature or to redraw an existing one. -->
<div id="sign-draw" hidden>
<p class="mhint">Draw in the box. The line under it is a guide, not part of what is saved.</p>
<canvas id="sign-pad" width="640" height="220"></canvas>
<label class="mfield block">Name
<input type="text" id="sign-name" spellcheck="false" placeholder="Signature">
</label>
<div class="mrow">
<button class="btn wide" id="sign-clear">Clear</button>
<span class="spacer"></span>
<button class="btn wide" id="sign-cancel">Back</button>
<button class="btn wide primary" id="sign-ok" disabled>Save</button>
</div>
</div>
</div>
<div class="modal" id="modal-text" hidden>
<h2 id="modal-text-title">Text stamp</h2>
<textarea id="text-body" rows="4" placeholder="Type the text to place…"></textarea>
<div class="mrow">
<label class="mfield" id="text-size-field">Size
<select id="text-size">
<option value="8">8</option><option value="10">10</option>
<option value="12" selected>12</option><option value="14">14</option>
<option value="18">18</option><option value="24">24</option>
<option value="36">36</option><option value="48">48</option><option value="72">72</option>
</select>
</label>
<button class="btn styl" id="text-bold" type="button" title="Bold"><b>B</b></button>
<button class="btn styl" id="text-italic" type="button" title="Italic"><i>I</i></button>
<span class="spacer"></span>
<button class="btn wide" id="text-cancel">Cancel</button>
<button class="btn wide primary" id="text-ok">Place</button>
</div>
<p class="mhint" id="text-note" hidden></p>
<p class="mhint" id="text-warn" hidden></p>
</div>
<div class="modal" id="modal-convert" hidden>
<h2>Convert to Word</h2>
<p>A PDF stores glyphs with coordinates, not paragraphs. Converting means working out
where the paragraphs were, so the result is a <strong>rebuilt</strong> document that reads
the same rather than a copy that looks the same.</p>
<label class="mfield block">File name
<input type="text" id="convert-name" spellcheck="false">
</label>
<ul class="summary" id="convert-summary"></ul>
<div class="mrow">
<span class="spacer"></span>
<button class="btn wide" id="convert-cancel">Cancel</button>
<button class="btn wide primary" id="convert-go">Convert</button>
</div>
</div>
<div class="modal" id="modal-images" hidden>
<h2>Pictures to PDF</h2>
<p id="images-count"></p>
<div class="mrow">
<label class="mfield">Page
<select id="images-page">
<option value="fit" selected>Shaped like the picture</option>
<option value="a4">A4</option>
<option value="letter">Letter</option>
</select>
</label>
<label class="mfield" id="images-margin-field">Border
<select id="images-margin">
<option value="0">None</option>
<option value="18" selected>Narrow</option>
<option value="48">Wide</option>
</select>
</label>
</div>
<p class="mhint" id="images-note"></p>
<div class="mrow">
<span class="spacer"></span>
<button class="btn wide" id="images-cancel">Cancel</button>
<button class="btn wide primary" id="images-go">Make the PDF</button>
</div>
</div>
<div class="modal" id="modal-save" hidden>
<h2>Save a copy</h2>
<label class="mfield block">File name
<input type="text" id="save-name" spellcheck="false">
</label>
<ul class="summary" id="save-summary"></ul>
<div class="mrow">
<span class="spacer"></span>
<button class="btn wide" id="save-cancel">Cancel</button>
<button class="btn wide primary" id="save-go">Save</button>
</div>
</div>
</div>
<!-- Pinned to the current selection; see paintSelectionBar in editor.js. -->
<div class="selbar" id="selbar" hidden>
<button class="sb" id="sb-edit" title="Edit this text (or double-click it)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"><path d="M11 2.5l2.5 2.5L6 12.5 3 13l.5-3z"/></svg>
</button>
<span class="sb-group" id="sb-textsize">
<button class="sb" id="sb-smaller" title="Smaller">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M3.5 8h9"/></svg>
</button>
<span class="sb-val" id="sb-size">12</span>
<button class="sb" id="sb-bigger" title="Bigger">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><path d="M8 3.5v9M3.5 8h9"/></svg>
</button>
</span>
<button class="sb" id="sb-bold" title="Bold"><b>B</b></button>
<button class="sb" id="sb-italic" title="Italic"><i>I</i></button>
<button class="sb" id="sb-fill" title="Fill">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5"><rect x="2.5" y="3.5" width="11" height="9"/><path d="M2.5 9.5h11v3h-11z" fill="currentColor" stroke="none"/></svg>
</button>
<span class="sb-sep"></span>
<button class="sb" id="sb-dup" title="Duplicate">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.5"><rect x="5.5" y="5.5" width="8" height="8" rx="1"/><path d="M3.5 10.5V3a1 1 0 0 1 1-1H11"/></svg>
</button>
<button class="sb danger" id="sb-del" title="Delete (Del)">
<svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.6" stroke-linecap="round" stroke-linejoin="round"><path d="M3 4h10"/><path d="M6 4V2h4v2"/><path d="M4 4l1 10h6l1-10"/><path d="M7 6.5v5M9 6.5v5"/></svg>
</button>
</div>
<div class="toast" id="toast"></div>
<input type="file" id="file-input" accept="application/pdf,.pdf" hidden>
<input type="file" id="img-input" accept="image/*" multiple hidden>
<input type="file" id="merge-input" accept="application/pdf,.pdf" multiple hidden>
<a id="download-link" style="display:none"></a>
<script type="module" src="editor.js"></script>
</body>
</html>
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