# Best practices

### Beautify your HTML before triggering the API

This would decrease your request time down, so eventually you could get the PDF file faster. Our servers will render faster with the optimized content as well.

### Put CSS Styles in your HTML Content

To avoid any error occurring, you should your CSS Styles in the HTML Content, ideally:

```
html
    head
        style <== here
    body
```

### Make sure your included files are accessible & fast to access

You can include remote URLs in your HTML Content, including images, fonts, etc.

Make sure to use **CDN storage** with a **Good connection**, otherwise, your PDF will be slow to render.

**Popular CDN for fonts:**

* Google Fonts
* CDNFonts

**Popular CDN Storage for assets:**

* AWS S3
* Google Cloud Storage
* BunnyCDN (cheap & affordable)
* Akamai (enterprise)
* etc

### Define your page's size

It is recommended to always send us your page's size (width & height) so that it can be printable on various papers.

Popular paper sizes:

* `Letter` - 8.5 x 11 (default of **RenderPDF.io**)
* `Legal` - 8.5 x 14
* `Tabloid` - 11 x 17
* `Ledger` - 17 x 11
* `A0` - 33.1 x 46.8
* `A1` - 23.4 x 33.1
* `A2` - 16.54 x 23.4
* `A3` - 11.7 x 16.54
* `A4` - 8.27 x 11.7
* `A5` - 5.83 x 8.27
* `A6` - 4.13 x 5.83