> For the complete documentation index, see [llms.txt](https://overleaf-pro.ayaka.space/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://overleaf-pro.ayaka.space/latex/es/base-de-conocimientos/163-why-does-it-sometimes-take-a-lot-of-time-to-show-the-pdf-preview.md).

# ¿Por qué a veces se tarda mucho en mostrar la vista previa del PDF?

Esto puede deberse a errores en el documento en el que estás trabajando: la vista previa solo se actualizará cuando el documento pueda compilarse correctamente. Por tanto, cualquier error impide que la vista previa se actualice, y seguirá mostrando la última compilación correcta hasta que se corrijan los errores.

Puedes ver cualquier error en tu documento moviendo el ratón sobre la palabra 'error' en la esquina superior derecha de la vista previa. Por ejemplo, un error común es la necesidad de poner los símbolos matemáticos entre signos de dólar, p. ej. $$\phi$$ en lugar de solo \phi.

Si la vista previa de PDF no se actualiza incluso cuando se resuelven los errores, por favor [háganoslo saber](https://www.overleaf.com/contact) y lo revisaremos por ti.


---

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