For anyone making subtitles for their videos, CPL is very important. But what does CPL mean and why is it so crucial? Let us explain!

What does CPL mean?

CPL is the acronym for 'Characters Per Line.'

Ok and why are they important?

If you want your subtitles to be readable by your audience, it's important to respect certain style guides. CPL helps you to do this.

Is there a maximum CPL I should set per caption?

BBC and Channel 4 recommend a maximum of 42 CPL. Of course, the choice is yours but we recommend that you try to make your subtitles as easily readable to your audience.

There is no set rule on CPL. It depends on the industry and country you work in. Some industries set their CPL at 23. Others have a CPS rate of 33 and in some countries it can be up to 42 CPL.

Think about it this way : An increase in the number of characters, attempting to fit over 40 per subtitle line, reduces the legibility of the subtitles because the font size is also inevitably reduced.

What is a 'character'?

A character is text you type in your caption. So any letter, number or symbol you use in your caption will be counted as a character.

Does that include spaces?

Yes, spaces are counted as part of your CPL.

Where can I see my CPL on the Subtitle Generator?

You can see the CPS for each caption on the Text Editor section of the Subtitle Generator.

Why is my CPL box in red?

If the CPL box is red, it means that your caption has more than 42 CPL. This means that there's a risk that it might not be readable for the viewer. You can try to shorten your caption or create a new line below it to split the text between two lines.

What does it mean if my CPL box is grey?

This means that there are no more than 42 CPL and so we believe that your caption is readable for your viewers. Nice work!

For more useful tips about our Subtitle Generator click here.
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