# Parameters ::: tip The parameters can be linked with `&` to used together to generate a complex feed. ::: ## Filtering ::: warning Warning Please make sure you've [fully URL-encoded](https://gchq.github.io/CyberChef/#recipe=URL_Encode(true)) the parameters. Do not rely on the browser's automatic URL encoding. Some characters, such as `+`, `&`, will not be automatically encoded, resulting in the final parsing result not being correct. ::: The following URL query parameters are supported, Regex support is built-in. Set `filter` to include the content - `filter`: filter `title` and description - `filter_title`: filter `title` only - `filter_description`: filter `description` only - `filter_author`: filter `author` only - `filter_time`: filter `pubDate`, in seconds, return specified time range. Item without `pubDate` will not be filtered. For example: [https://rsshub.app/dribbble/popular?filter=Blue|Yellow|Black](https://rsshub.app/dribbble/popular?filter=Blue|Yellow|Black) Set `filterout` to exclude unwanted content. - `filterout`: filter `title` and description - `filterout_title`: filter `title` only - `filterout_description`: filter `description` only - `filterout_author`: filter `author` only For example: [https://rsshub.app/dribbble/popular?filterout=Blue|Yellow|Black](https://rsshub.app/dribbble/popular?filterout=Blue|Yellow|Black) Set `filter_case_sensitive` to determine whether the filtering keywords should be case sensitive. The parameter would apply to both `filter` and `filterout`. Default: `true` Example: [https://rsshub.app/dribbble/popular?filter=BluE|yeLLow|BlaCK&filter_case_sensitive=false](https://rsshub.app/dribbble/popular?filter=BluE|yeLLow|BlaCK&filter_case_sensitive=false) ## Limit Entries Set `limit` to limit the number of articles in the feed. E.g. Dribbble Popular Top 10 [https://rsshub.app/dribbble/popular?limit=10](https://rsshub.app/dribbble/popular?limit=10) ## Fulltext Enable fulltext via `mode` parameter. E.g. Bilibili article ## Access Control Set `key` or `code` to grant access to requests. See [Access Control Configuration](install/#configuration-access-control-configuration-access-key-code). ## Telegram Instant View Replace website link with Telegram's Instant View link. Enable Telegram Instant View requires a page template, it can be obtained from Telegram's [Instant View page](https://instantview.telegram.org/) - `tgiv`: template hash, obtained from the link of template page generated（the string after `&rhash=`） E.g. ## Sci-hub link Output Sci-hub link in scientific journal routes, this supports major journals or routes that output DOIs. - `scihub`: set to any value E.g. ## Conversion between Traditional and Simplified Chinese - `opencc`: `s2t` (Simplified Chinese to Traditional Chinese)、`t2s` (Traditional Chinese to Simplified Chinese), other optional values refer to [simplecc-wasm - Configurations](https://github.com/fengkx/simplecc-wasm#%E9%85%8D%E7%BD%AE-configurations) E.g. ## Multimedia processing ::: warning 注意 This is an experimental API The following operation allows user to inject codes, which is harmful in web environment. However, RSS feed reader usually limits these functions. While normally routes won't need these functions, please set `ALLOW_USER_HOTLINK_TEMPLATE` to `true` if you understand how these parameters works. ::: - `image_hotlink_template`: replace image URL in the description to avoid anti-hotlink protection, leave it blank to disable this function. Usage reference [#2769](https://github.com/DIYgod/RSSHub/issues/2769). You may use any property listed in [URL](https://developer.mozilla.org/en-US/docs/Web/API/URL#Properties) (suffixing with `_ue` results in URL encoding), format of JS template literal. e.g. `${protocol}//${host}${pathname}`, `https://i3.wp.com/${host}${pathname}`, `https://images.weserv.nl?url=${href_ue}` - `multimedia_hotlink_template`: the same as `image_hotlink_template` but apply to audio and video. Note: the service must follow redirects, allow reverse-proxy for audio and video, and must drop the `Referer` header when reverse-proxying. [Here is an easy-to-deploy project that fits these requirements](https://github.com/Rongronggg9/rsstt-img-relay). The project accepts simple URL concatenation, e.g. `https://example.com/${href}`, in which `example.com` should be replaced with the domain name of the service you've deployed - `wrap_multimedia_in_iframe`: wrap audio and video in `