Text to pdf Converter

This text to PDF converter turns typed or pasted text into a downloadable PDF file with proper page layout. You choose A4 or US Letter page size, portrait or landscape orientation, the font size in points, the margin in millimetres applied to all four sides, a line spacing multiplier, and one of four text alignments: left, centre, right or justified. A document title can be embedded in the PDF's file metadata, and you set the name of the downloaded file separately. Long lines are wrapped to fit the usable width and pages break automatically when the text runs past the bottom margin, so a long document paginates without any manual intervention. The PDF is produced in your browser using the jsPDF library, so the text is not sent anywhere. It suits notes, transcripts, logs, letters and anything you need as a fixed-layout file.

The generator creates a document in millimetres at the page size and orientation you pick, then works out the usable area by subtracting the margin twice from both the page width and the page height.

Line height is derived from the font size, which you set in points, and the line spacing multiplier. A point is one seventy-second of an inch and an inch is 25.4 millimetres, so a point is 25.4 divided by 72 millimetres. The font size in points is converted that way and then multiplied by the spacing factor to give the distance from one baseline to the next.

Your text is then split into lines that fit the usable width, wrapped at the measured text width rather than a fixed character count, so wrapping respects the real font metrics. Each line advances the vertical position by the line height, and when that position would pass the bottom margin a new page starts.

Alignment changes where each line is anchored: at the left margin, at the horizontal centre of the usable width, at the right edge of it, or stretched across it for justified text.

Take the defaults most people start from: A4 portrait, a 20 millimetre margin, 12 point text and 1.5 line spacing. A4 measures 210 by 297 millimetres.

Usable width is 210 minus 20 twice, which is 170 millimetres. Usable height is 297 minus 20 twice, which is 257 millimetres.

Line height comes from the font size. Twelve points divided by 72 gives one sixth of an inch, and multiplying by 25.4 gives 4.233 millimetres. Applying the 1.5 spacing multiplier gives 6.35 millimetres per line.

Dividing the 257 millimetres of usable height by 6.35 gives 40.47, so 40 full lines fit on each page before the generator starts a new one.

Change one setting and the arithmetic moves. Reduce the margin to 10 millimetres and usable height rises to 277, which at the same line height fits 43 lines. Drop the spacing to 1.2 instead and the line height becomes 5.08 millimetres, so the original 257 millimetre area now holds 50 lines. Switching to landscape swaps the dimensions, giving a 257 millimetre usable width and a 170 millimetre usable height, which fits far fewer lines but much longer ones.

For body text, 11 or 12 points with spacing between 1.3 and 1.5 reads comfortably. Margins below about 15 millimetres risk being clipped by desktop printers, which usually cannot print to the very edge of a sheet, so keep 15 to 20 millimetres if the file will be printed rather than read on screen.

Alignment is a judgement call. Left alignment gives even word spacing and is the safest default. Justified text produces tidy edges on both sides but, in a narrow column or with long words, can open distracting gaps between words, since there is no hyphenation to even them out. Centre and right alignment suit short blocks such as a title or an address rather than running text.

This converter handles plain text. It does not interpret Markdown, HTML tags or rich-text formatting, so bold, italics, headings, tables and images are out of scope, and any markup you paste will appear literally. Indentation and blank lines are preserved as typed, which makes it suitable for logs and transcripts. Remember the document title goes into the file's metadata, while the filename setting controls what the download is called.