On Mon 02 Jun 2025 at 21:28:50 (+0100), debian-u...@howorth.org.uk wrote: >> Richard Owlett <rowl...@access.net> wrote: >> > On 6/2/25 2:03 PM, Van Snyder wrote: >> > > On Mon, 2025-06-02 at 13:39 -0500, Richard Owlett wrote: >> > >> I'm over 80. My only phone just died. >> > >> I just bought an ATT CL84207 desk set which came with minuscule >> > >> 5"x7" manual. >> > >> Fortunately an ATT site has PDFs of manuals. >> > >> >> > >> *HOWEVER* only BOLD text is in a saturated image. >> > >> All other text is in a marginally readable pale grey. >> >> [snip] >> >> > > If it's text in PDF, maybe LibreOffice can help. >> >> I found the PDF manual online. Assuming it's the same one, the PDF is >> indeed text rather than images-for-text. As such you can zoom the text >> in atril to at least 400%. You can also invert the colours, which may >> increase the contrast. >> > > https://att.vtp-media.com/products/CL/CL84XX7/CL84XX7_CIB_i6.0_20190821.pdf >
Okular has various options of changing document's colors, including inverting colors, changing page color, changing light and dark colors and so on. See "Okular > menu > Settings > Configure Okular > Accessibility > Change colors" . I tried https://att.vtp-media.com/products/CL/CL84XX7/CL84XX7_CIB_i6.0_20190821.pdf with the "Invert colors" option and it seems pretty readable to me, definitely more readable than with the original colors. Regards,
