Abstract: A social networking system user identifies one or more social networking system users authorized to present content items to the user via the social networking system (“authorized users”). When an additional user requests presentation of a content item to the user, the social networking system determines if the additional user is an authorized user. If the additional user is an authorized user, the content item is presented to the user. However, if the additional user is not an authorized user, the social networking system identifies the additional user to the user along with a request to identify the additional user as an authorized user. If the user identifies the additional user as an authorized user in response to the request, the content item is presented to the user.

Abstract: Image processing includes: applying shader code to an original image to generate a blurred image version (BIV); obtaining a composite image that is generated based at least in part on the original image and the BIV, wherein the composite image is generated by: obtaining a mask that includes an unblurred region and a blurred region; applying the mask to combine the original image and the BIV to render a composite image that includes an unblurred portion comprising a portion of the original image corresponding to the unblurred region of the mask, and a blurred portion comprising a portion of the BIV corresponding to the blurred region of the mask; and outputting the composite image to be displayed.

Abstract: Image processing includes receiving a touchscreen input gesture from a user, the touchscreen input gesture indicating configuration information of a mask to be applied to an image; configuring the mask based at least in part on the configuration information, the mask including an unblurred region and a blurred region; generating a processed image that includes an unblurred portion corresponding to the unblurred region of the mask and a blurred portion corresponding to the blurred region of the mask, the generating the processed image including applying the mask to at least the image; and displaying the processed image.

Abstract: A social networking system user identifies one or more social networking system users authorized to present content items to the user via the social networking system (“authorized users”). When an additional user requests presentation of a content item to the user, the social networking system determines if the additional user is an authorized user. If the additional user is an authorized user, the content item is presented to the user. However, if the additional user is not an authorized user, the social networking system identifies the additional user to the user along with a request to identify the additional user as an authorized user. If the user identifies the additional user as an authorized user in response to the request, the content item is presented to the user.

Abstract: In one embodiment, a method includes by a host computing server, receiving from a client computing device, a request to upload a multimedia file from the client computing device to a service; by the host computing server, identifying one or more third-party transcoding servers, wherein the transcoding servers are configured to receive and transcode multimedia files from client computing devices and store the transcoded multimedia files; by the host computing server, sending to the client computing device, a reply that comprises addresses of the third-party transcoding servers and job configuration information, wherein the job configuration information specifies one or more upload policies and comprises an access token enabling the client computing device to access the transcoding servers.

Abstract: A social networking system user identifies one or more social networking system users authorized to present content items to the user via the social networking system (“authorized users”). When an additional user requests presentation of a content item to the user, the social networking system determines if the additional user is an authorized user. If the additional user is an authorized user, the content item is presented to the user. However, if the additional user is not an authorized user, the social networking system identifies the additional user to the user along with a request to identify the additional user as an authorized user. If the user identifies the additional user as an authorized user in response to the request, the content item is presented to the user.

Abstract: Some embodiments of a method for withdrawal a message include receiving, by a mobile device, an input to send a first message to a first recipient, the first message containing at least one image or video. The mobile device processes the first message for transmittal to the first recipient. In response to detecting a request to withdraw the first message within a timeout period, the mobile device determines that the first message has not been sent from the mobile device and terminates the processing of the first message for sending.

Abstract: In one embodiment, a method includes by a host computing server, receiving from a client computing device, a request to upload a multimedia file from the client computing device to a service; by the host computing server, identifying one or more third-party transcoding servers, wherein the transcoding servers are configured to receive and transcode multimedia files from client computing devices and store the transcoded multimedia files; by the host computing server, sending to the client computing device, a reply that comprises addresses of the third-party transcoding servers and job configuration information, wherein the job configuration information specifies one or more upload policies and comprises an access token enabling the client computing device to access the transcoding servers.

Abstract: Some embodiments of a method for withdrawal a message include receiving, by a mobile device, an input to send a first message to a first recipient, the first message containing at least one image or video. The mobile device processes the first message for transmittal to the first recipient. In response to detecting a request to withdraw the first message within a timeout period, the mobile device determines that the first message has not been sent from the mobile device and terminates the processing of the first message for sending.

Abstract: Some embodiments of a method for withdrawal a message include receiving, by a mobile device, an input to send a first message to a first recipient, the first message containing at least one image or video. The mobile device processes the first message for transmittal to the first recipient. In response to detecting a request to withdraw the first message within a timeout period, the mobile device determines that the first message has not been sent from the mobile device and terminates the processing of the first message for sending.

Abstract: An online system allows its users to posts content to the system and to see the content posted by other users of the system. The system helps users discover new content and sources thereof that may be interesting. For example, a first user expresses an interest in a content item and communicates that interest to the system. The system then identifies a second user who posted that liked content item and identifies content items in which the second user has communicated an interest. Based on this, the system selects one or more of the content items liked by the second user and provides the selected content items to the first user. The system may decline to send the content item to the first user if it was posted by a third user with whom the first user has already established a connection.

Abstract: Image processing includes receiving a touchscreen input gesture from a user, the touchscreen input gesture indicating configuration information of a mask to be applied to an image; configuring the mask based at least in part on the configuration information, the mask including an unblurred region and a blurred region; generating a processed image that includes an unblurred portion corresponding to the unblurred region of the mask and a blurred portion corresponding to the blurred region of the mask, the generating the processed image including applying the mask to at least the image; and displaying the processed image.

Abstract: A social networking system user (“sending user”) identifies a content item to the social networking system and also identifies one or more additional social networking system users (“receiving users”) to be presented with a content item. The social networking system communicates the content item to client devices for presentation to the receiving users. An interface identifying the receiving users and a status associated with each receiving user is presented to the sending user. The status associated with a receiving user describes how the receiving user interacted with the content item, and may be updated to reflect subsequent interactions with the content item by a receiving user.

Abstract: A social networking system identifies one or more additional users to be presented with a content item to a user presenting the content item (“sending user”). Information maintained by the social networking system and describing prior interaction between the sending user and various additional users is retrieved. Based on the prior interaction between the sending user and the additional users, one or more additional users are identified to the sending user as potential recipients for the content item. For example, a frequency of interaction between the user and additional users, affinity between the user and various additional users, or other suitable information is used to identify potential recipients of the content item.

Abstract: A social networking system user identifies one or more social networking system users authorized to present content items to the user via the social networking system (“authorized users”). When an additional user requests presentation of a content item to the user, the social networking system determines if the additional user is an authorized user. If the additional user is an authorized user, the content item is presented to the user. However, if the additional user is not an authorized user, the social networking system identifies the additional user to the user along with a request to identify the additional user as an authorized user. If the user identifies the additional user as an authorized user in response to the request, the content item is presented to the user.

Abstract: In one embodiment, a method includes by a host computing server, receiving from a client computing device, a request to upload a multimedia file from the client computing device to a service; by the host computing server, identifying one or more third-party transcoding servers, wherein the transcoding servers are configured to receive and transcode multimedia files from client computing devices and store the transcoded multimedia files; by the host computing server, sending to the client computing device, a reply that comprises addresses of the third-party transcoding servers and job configuration information, wherein the job configuration information specifies one or more upload policies and comprises an access token enabling the client computing device to access the transcoding servers.

Abstract: Image processing includes: receiving an image; applying shader code, using one or more processors, to the image to generate a blurred image version (BIV); receiving configuration information pertaining to a mask; generating the mask that includes an unblurred region and a blurred region, based at least in part on the configuration information; and applying the mask to combine the image and the BIV to render a composite image that includes an unblurred portion comprising a portion of the image corresponding to the unblurred region of the mask, and a blurred portion comprising a portion of the BIV corresponding to the blurred region of the mask.

Abstract: Image processing includes: receiving an image; applying shader code, using one or more processors, to the image to generate a blurred image version (BIV); receiving configuration information pertaining to a mask; generating the mask that includes an unblurred region and a blurred region, based at least in part on the configuration information; and applying the mask to combine the image and the BIV to render a composite image that includes an unblurred portion comprising a portion of the image corresponding to the unblurred region of the mask, and a blurred portion comprising a portion of the BIV corresponding to the blurred region of the mask.