# Zyte API frequently asked questions

## How many concurrent requests can I send?

See [Concurrency](usage/rate-limit.md#zyte-api-concurrency).

## Is there a response size limit?

The size limit of [browserHtml](https://docs.zyte.com/zyte-api/usage/reference.html#operation/extract/response/200/browserHtml) and
[httpResponseBody](https://docs.zyte.com/zyte-api/usage/reference.html#operation/extract/response/200/httpResponseBody) (before base64-encoding) is 10 MB. Longer
responses are truncated. [HTTP compression](https://en.wikipedia.org/wiki/HTTP_compression) does not affect this limit.

## Can I set a more granular geolocation?

[geolocation](https://docs.zyte.com/zyte-api/usage/reference.html#operation/extract/request/geolocation) only supports country granularity.

However, websites seldom limit content by IP address at a lower granularity.
Provided you use the right country, you should be able to get content for any
specific country subdivision (ZIP code, state, etc.).

The way to get content targeted at a specific country subdivision is usually
through cookies. The way to get the right cookies depends on the target
website:

- On some websites you can use our [setLocation action](usage/browser.md#zapi-actions)
  or some other actions to configure the target subdivision.
  > [!TIP]
  > You can use [sessions](usage/features.md#zapi-sessions) to minimize the amount
  > of [browser requests](usage/browser.md#zapi-browser) you need.
- On some websites you can [manually set a cookie](usage/features.md#zapi-cookies) that
  forces content for the target subdivision.
- On some websites you may need to [start a session](usage/features.md#zapi-sessions)
  and configure that session for the target subdivision.

## Can I override the `User-Agent` header?

- [You can](usage/http.md#zapi-body-request-headers) on [HTTP requests](usage/http.md#zapi-http), but Zyte API may override your value for certain websites if
  needed for [ban avoidance](usage/errors.md#zapi-bans).
- You cannot on [browser requests](usage/browser.md#zapi-browser).