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add "latex tips" page

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resurrected via:
https://web.archive.org/web/20070522115637/http://www.colinm.org/tips/latex
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Colin McMillen 2021-07-01 17:19:15 -04:00
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# LaTeX Tips
*Posted: 2007-05-22*
## Embedding fonts in PDFs
To check whether fonts are embedded, use `pdffonts`, which is included with `xpdf`. `pdffonts` gives output that looks like this:
```
$ pdffonts paper.pdf
name type emb sub uni object ID
------------------------------------ ------------ --- --- --- ---------
FHQIOS+NimbusRomNo9L-Medi Type 1 yes yes no 6 0
NEESMN+NimbusRomNo9L-Regu Type 1 yes yes no 9 0
PJQNOS+CMSY10 Type 1 yes yes no 12 0
```
You want `emb` to be `yes` for all fonts (and possibly `sub` as well; also, all fonts should be Type 1, not Type 3). By default in Ubuntu, pdflatex should embed all fonts. Just in case, you can check `/etc/texmf/updmap.d/00updmap.cfg`, which should have a line like this:
`pdftexDownloadBase14 true`
If it's set to `false`, change it to `true`, then run `update-updmap` as root. Remake the PDF; if it still has non-embedded fonts, your figures are probably to blame. Check your PDF figures and make sure their fonts are embedded (using the `pdffonts` command). For anything that doesn't have embedded fonts, you can try the following magical invocation (all on one line):
```gs -dSAFER -dNOPLATFONTS -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sPAPERSIZE=letter -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dCompatibilityLevel=1.4 -dMaxSubsetPct=100 -dSubsetFonts=true -dEmbedAllFonts=true -sOutputFile=figures/Mprime-new.pdf -f figures/Mprime.pdf```
This creates a file `figures/Mprime-new.pdf` that is hopefully identical to the input file `figures/Mprime.pdf`, except that the fonts are embedded. Run `pdffonts` on it to check.
Once all your figures are in PDF format, remake the paper again. Hopefully, all your fonts are now embedded --- check again with `pdffonts`.