Template Titles
Template Titles (not to be confused with Title Templates) allow you to create a template for other titles in your project. You create the template title with the settings that all or a considerable number of the titles in the project should have, and then base subsequent titles on that template. If you decide to change the look of your titles, you only need to change the template title, and the titles based on this template will automatically update to reflect any formatting changes you made to the template title. Apart from that, template titles behave like any other title clip.
Create a Template Title
Create a new title clip like normal, add any objects you need, and any static text. Create a new text field, and enter %s. This will be replaced later with text you specify for each title you add to the project based on this template. Adjust the font attributes, alignment, shadow, and the typewriter effect as required. If the title needs animation, you can create that, too.
Instead of simply clicking on Create title, click on document-save-asSave As, or press Ctrl+S, and save the template title. Give it a meaningful name for better recognizeability.
Use the Template Title
In the Project Bin, click on kdenlive-add-clipgo-downAdd clip or folder and select Add Template Title, or right-click on empty space in the Project Bin, and select Add Template Title.

Kdenlive opens a window with a drop-down list with all the title templates and a preview area. Select the template you just created, or in case you saved it elsewhere click the document-openOpen file dialog icon, navigate to the respective folder, and open the .kdenlivetitle file from there.
Alternatively you can add template title inside the title app.
Kdenlive added a new title clip to the Project Bin. Right-click this clip in the Project Bin and select Clip Properties, or in case you have the Clip Properties widget available, simply open it.

Enter the text that this title should display into the text field in the dialog that appears.
You can change the Duration by ticking the box and entering a new value (format is hh:mm:ss:ff).
You can edit the template by clicking on the Edit Clip button.
Click on Apply to create or change this title clip.
Drag the title to the timeline.

The %s in the template will be replaced with the text that you enter in the Text field.
Warning A known issue with template titles is that text centering does not work correctly for text replacing the
%s. *[RGB]: Red Green Blue *[VFX]: Visual Effects *[feathering]: Smoothing or blurring the edges of a feature *[LFO]: Low-Frequency Oscillation *[dB]: decibel *[LUFS]: Loudness Units Full Scale *[AI]: Artificial Intelligence *[LLM]: Large Language Model *[HSV]: Hue, Saturation, Value *[SOP/Sat]: S(lope), O(ffset), P(ower) / SATuration *[CDL]: Color Decision List *[HSL]: Hue, Saturation, Lightness - Using HSL color space is useful for subtle color changes *[px]: pixel *[hh:mm:ss:ff]: hours:minutes:seconds:frames *[Hz]: Hertz *[CIE]: Commission internationale de l'éclairage, French for International Commission on Illumination *[DCI]: Digital Cinema Initiative *[nadir]: direction pointing directly below a particular location *[OS]: Operating System *[decibel]: Unit of measurement (dB) for sound levels *[clipping]: A form of distortion that limits a signal once it exceeds a threshold *[Spectrogram]: Visual representation of the spectrum of frequencies of a signal as it varies with time *[prevent clipping]: Dynamic range compression (DRC)is an audio signal processing operation that reduces the volume of loud sounds or amplifies quiet sounds, thus reducing or compressing an audio signal's dynamic range. *[SNR]: Signal-to-Noise Ratio *[dbFS]: Decibels relative to full scale *[QHD]: Quad-HD *[UHD]: Ultra High Definition *[XML]: Extensible Markup Language *[fps]: frames per second *[NTSC]: National Television Standard Committee - defined the TV system used in the United States, Japan and many other countries *[PAL]: Phase Alternating Line - a colour encoding system for analogue television *[LFE]: Low Frequency Effects *[RAW]: The RAW file format is digital photography's equivalent of a negative in film photography: it contains untouched, raw pixel information straight from the digital camera's sensor *[DSLR]: Digital Single Lens Reflex *[DOF]: Depth of Field *[NDF]: Neutral Density Filter *[AVI]: Audio Video Interleave *[BT.601]: A standard from 1982 defining how RGB color primaries get turned into the YCbCr channels used by modern codecs *[BT.709]: A standard from 1990 which does the same at BT.601 but the transfer coefficients are slightly different *[grep]: A Unix command-line utility for searching plain-text data sets for lines that match a regular expression *[MLT]: Media Lovin' Toolkit - An open source software multimedia framework designed and developed for tv broadcasting *[SD]: Secure Digital - a proprietary, non-volatile, flash memory card format developed by the SD Association