> 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/latex-errors/19-latex-error-unknown-float-option-h.md).

# LaTeX Error: Unknown float option \`H'

This error appears when you have forgotten to load the **`float`** package. Float specifiers are written in the square brackets whenever we use a *float* such as a figure or a table, i.e. the **`H`** in **`\begin{figure}[H]`**. The **`H`** float specifier comes as part of the **`float`** package. It tells the compiler to place the figure at that exact location in the page, instead of moving it to somewhere else. Whenever we want to use this option, we must include **`\usepackage{float}`** in our preamble. To read more about how to use options to specify float positions, check out our [documentation](/latex/figures-and-tables/02-positioning-images-and-tables.md).

## Common Causes

**Forgetting to load the `float` package:**

The [float package](https://www.ctan.org/pkg/float?lang=en) provides us with the `H` option. This is a stronger version of `h`, and tells LaTeX that we would like the figure to appear *exactly* here. If we use the `H` option, but forget to include `\usepackage{float}` in our preamble, we will get an error like the one shown below

main.tex, line 12

LaTeX Error: Unknown float option \`H'.

See the LaTeX manual or LaTeX Companion for explanation. Type H for immediate help. ... l.10 \begin{figure}\[H] Option \`H' ignored and \`p' used.

To resolve this error, we simply need to include **`\usepackage{float}`** in our preamble to our document i.e. before **`\begin{document}`**


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