A project is a collection of documents and rules to annotate documents manually or automatically.

Creating a project

Once you have signed up and you have a user account, you are ready to create a new project.

1Choose a name for your project

2Choose a description for your project. Remember each project has a guidelines section where you can go into detail about the characteristics of your project.

Project settings

If you selected some machines when you created your project, you probably want to start importing text to tagtog. Otherwise, you need to configure the project's settings either to annotate manually or automatically.


You can write the annotation guidelines for you or your team. It should define what and how to manually annotate. The more clear it is, the better the annotations and the training data you can generate.

Clicking on Edit you turn on the mode to edit the guidelines. Clicking on View you are on the preview mode and you can see the results of your changes. Once it is ready, just save it .

Only users with admin role (or a custom role with enough permissions) can edit the guidelines.

Annotatable sections

Here you select which sections you want to manually or automatically annotate in supported scientific papers (papers should be imported in XML format. Here is the list of supported XML formats). The available sections are: Title, Abstract, Introduction & Background, Materials & Methods, Results, Conclusion & Discussion, Other. The sections not selected will be grayed out in the editor and manual annotations disabled.

You can also select how to annotate Figures & Tables as in always, never or section-dependant.

To disable manual annotation, uncheck each section. Users will be able to read text in the editor as usual, however manual annotation won't be possible.


Here you should define what type of information you want to annotate manually or automatically. Meaning, which type of information you want to identify or annotate in text. You achieve this by defining Entity Types (a.k.a. Entity Classes).

You define entity types from the user interface

You must add one or more entity types. Each entity is defined by a name, description (optional) and color. For example in the project in the picture above we want to extract vehicle information and for that we have created entity types to annotate vehicle parts (vehiclePart), vehicle types, (vehicleType) and vehicle model (vehicleModel). In order to easily identify the entities in the text, we will assign to each entity type a color.


As soon as you create one entity type, this will appear in the Dictionaries panel. Each entity type can have associated one or more dictionaries (Dictionary format). From here you can upload, replace or download dictionaries.

Once you have created a dictionary, you can upload/replace or download the dictionary file

As an example of dictionary, let's use the entity type vehicleModel. For example, Volkswagen Golf 7, Golf Mk7 and Golf VII all identify the same canonical or unique object, this object can be identified with an ID, e.g.: VWGOLF7. Let's create our entry in the dictionary:

VWGOLF7 Volkswagen Golf 7 Golf Mk7 Golf VII

When you create a dictionary, you don't need to cover cases as plural, tenses, etc. tagtog uses the dictionary entries and applies grammar rules to identify potential entities doing such modifications for you.

In order to upload a dictionary, you first need to create a dictionary. Click on New Dictionary under the entity type name and Save it. Two options will show up: Download Dictionary and Upload Dictionary.

Upload/Replace: you can use this option to upload a dictionary file. If the file was uploaded previously, it will be replaced with the new dictionary. Once you uploaded a dictionary, all new text imported is annotated automatically following the dictionary rules.

Download: you can use this option to download the dictionary being used in tagtog to your computer. This is very useful to make large edit operations and later replace the existing dictionary.

Dictionaries are automatically updated if a user adds new normalizations using the web editor. More information.


You can annotate relations in text. For that you must first create a new Relation Type by clicking the New Relation Type button. After just choose two Entity Types, those types you want to identify relations for. Optionally you can add a description for the relation. For example, a new relation type between vehicle parts and vehicle models.

Currently you cannot extract relations in text automatically. However, as a workaround, you can extract the entities automatically and based on the distance in text, infer a relation.

Document labels

Labels used to mark the documents or text you import. It is another type of annotation, but affecting the whole document.

To create a new Document Label, click on the button New Document Label. Then, write a name for the label (required), type (required) and description (optional).

You can create different types of Document Labels:

Type Description
boolean The simplest label. Basically you mark the document as True or False for a specific condition. e.g. should this customer request go to the technical department? Yes or No.
string One or more words describing a document. This is particularly handy whether you don't have a specific list of options or if you do, it might change often. e.g. which disease is related to this clinical profile?
enum list of options which can describe a document. In this case the options should be written in the description of the label separated by commas. e.g. severity of the error report could be: low, medium, high or critical.

Setting a document label with the enum type

Once saved, you can start using them on the web editor.

Soon you will be able to generate document labels automatically within tagtog. Now, as a workaround, you can infer the document label based on the entities extracted automatically.

Entity labels

Labels used to add attributes to existing entities. It is usual some attributes make sense only to some entity types (e.g. gender for person, not for city), you can assign an entity label to one specific entity type or all entity types.

To create a new Entity Label, click on the button New Document Label. Then, write a name for the label (required), type (required), entity type you want to assign the label to (required), and a description (optional).

You can create different types of Entity Labels:

Type Description
boolean The simplest label. Basically you mark an entity as True or False for a specific condition. e.g. if you are dealing with financial reports, you can annotate organization names and add an attribute Bankruptcy with value True to those organizations going bankrupt. You can later train a model that identifies in text companies that went bankrupt.
string One or more words describing an entity. This is particularly handy whether you don't have a specific list of options or if you do, it might change often. e.g. you can add comments to entities.
enum list of options to describe an entity. In this case the options should be written in the description of the label separated by commas. e.g. if you are processing CVs you could add an entity label to the entities identifying skills. This enum entity label skill type have the values soft skill and hard skill.

Setting two entity labels. The first with the enum type can be only set for entities with the type VehiclePart. The second with the string type can be set for all entity types.

By default, the new entity labels will be assigned to all entity types. Otherwise, you can choose or filter an entity type from the list of entity types.

Once saved, you can start using them on the web editor. When you add a label to an entity, remember that only those labels related to the entity type of the entity will show.

Soon you will be able to generate entity labels automatically within tagtog.


The webhooks are useful to integrate tagtog within your system. Only users with the role admin (or a custom role with enough permissions) can see/edit these project settings.

You can define webhooks to notify automatically an external system after a specific event in tagtog or API.

These events are:

Event Description Source
Import new document A notification is sent when the user uploads a document. GUI and API
Save document A notification is sent when the user saves a document. GUI and API (update annotations via API)

When any of those events is triggered, we'll send a HTTP POST payload to the webhook's configured End Point URL.

We also send information in the delivery HTTP headers for you to better process the event:

Header Description
X-tagtog-onPushSave-source Source of the event. Possible values: GUI, API
X-tagtog-onPushSave-status Type of event. Possible values: created, updated

This is the required information to configure a webhook:

Field Description
End Point URL pointing to the external system
Format Format of the payload to be sent to the End Point. Currently you can select:
  • ann.json (docs). application/json
  • tagtogID (simple json object like: {"owner": "...", "project": "...", "tagtogID": "...document id related to the event..."}). application/json
Only GUI trigger Check it if you want only GUI changes to trigger the webhook. Leave it unchecked if you want that both, API and GUI changes, trigger the webhook.

None no authentication

Basic Basic access authentication

NTLMv2 (Windows) NT LAN Manager v2



These are the annotations that are created automatically while you are manually annotating a document. For example, if you annotate the gene: BRA2. All the mentions of BRA2 in this text will be automatically annotated (more information on pre-annotations).

In this panel you can decide which are the default settings for pre-annotations: pre-selections, pre-deselections and their case sensitivity. You can always change these settings on the web editor for specific documents.

Machine Learning (tagtog ML)

Each time you press the button Confirm in the annotation editor, in the background, a tagtog machine learning model is being trained with all the project documents confirmed. Next time you upload a new document, this model can predict new annotations based on this model. You can remove or add new annotations to continue training the model and get more accurate results.

If activated, tagtog machine learning will start annotating automatically from the first document confirmed. No deployments or complex configurations are required, just by annotating you can train a use a tagtog machine learning model.

If you don't want to use tagtog machine learning, deactivate this option.

More information on how tagtog ML works.


Check this option to annotate directly over the native PDF document. This web interface only works with PDF files. If this option is unchecked, only the plain text stripped from the PDF is annotatable.

Take into consideration that if the PDF file is imported with the option unchecked, only the plain text version will be available for annotation. If you import the file with this option checked, both versions will be available: the native PDF annotation and the plain text annotation when the option is unchecked.

Find more information of the PDF annotation tool here.


In this panel, project admins (or a custom role with enough permissions) can invite and organize other users in your project, so they can collaborate in the annotation tasks. See for more info about roles and collaborative annotation.

Only users with the role admin (or a custom role with enough permissions) can see/edit these project settings.

Invite other users to your project

To add a new member, simply write the tagtog username, their email associated to their account, or any email address (for those who don't have an account in tagtog yet) in the text box, choose the role, and click on Add Member. Once added, those who don't have an account at tagtog yet, will receive a link to create an account and join the project. Already existing users will receive an email notification.

Task distribution

With this feature you can automatically distribute the project's documents among a group of project's members. For example, if you choose that each document is assigned to 1 single annotator, every uploaded document will be randomly assigned to only one of the annotators. Otherwise, for example, if you choose 2 annotators, every uploaded document will be randomly assigned to 2 annotators; that is, every document will have to be annotated by at least 2 annotators. You can choose between different flows to annotate documents in group. Find here the options.

This overlapping is recommended to increase the overall quality of your annotation project. Using it, tagtog compares the annotations from different annotators to calculate their level of agreement (inter-annotator agreement) automatically, a good indicator of quality. For more information about quality management at tagtog, go here

To start task distribution, first you need to enable the feature. Now:

1Select the group of project's members that will annotate documents (the system only distributes documents to these users).

2Select how many of these users will annotate each document.

By default, Task distribution is turned off, documents are not distributed. When task distribution is not active, members see the master version automatically when they open a document. Once the task distribution is active (number of annotators per document is 1 or more), members will see their own version of the annotations when they open a document.

When task distribution is active, project members see by default (in Documents) the special search view filter:TODO. This view lists the documents that have not been confirmed by the annotator yet.


Here you can set data requirements for your annotation tasks. These are enforced by tagtog to ensure your annotations comply with your data quality policies.

Only users with the role admin can see/edit these project settings.

There are different types of requirements available:

Required labels on file upload

You can upload files with predefined document labels. By default, no document label is selected. You can select one or more document labels if you want to ensure that always a file is uploaded using the GUI, these labels are defined.


Only users with the role admin can see/edit these project settings.

Export settings

Export the project's settings (entity types, relation types, entity labels, document labels, etc.) as a JSON file to reuse as a template on new projects.

Import settings

Import another project's settings. This will overwrite your current settings and remove all your project's documents. This should be applied solely on new projects.

Edit Project Description

You can change the description of your project at any moment. Just type the new description and click on Save.

Change Privacy Settings

Switch your public project to private project or the other way around.

Remove a project

To remove a project, go to its Settings > Admin. Click on the Delete Project button. Please notice that removing a project will remove all the documents within the project.


Your project has also a tab “Downloads” to… download stuff 😉. Depending on your role in the project, and whether the project is public or private, you will see different actionable buttons.

In particular, with the button Download All Documents (and their annotations) you can download as a Zip file all your project’s documents and their annotations (in anndoc format). This button is available only to project admins in private projects. It is available to all logged-in users in public projects.

Moreover, an analogous button Download as Zip is present in all document searches and folders (“Documents” tab) to download as Zip the subset of documents that match the search.

Other download actions are also available, including a reference to download documents using the API, and exporting the annotations legend.


Projects in tagtog are either public or private. You can change your private project to public or your public project to private in the Admin Settings of your project.

Public projects

Public projects are open projects. Share your data with the entire world (Cloud) or across your organization (on-Premises). Give to your dataset transparency and visibility. It is also a good opportunity to attract other people to collaborate with you to build or maintain open datasets. In public projects:

Anyone can see its documents and annotations (read-only).

Only registered users can download documents or annotations using the UI or the API.

Only the project members can make changes.

Private projects

In private projects , documents and annotations are kept private:

Each private project is only visible to its members.

Only project members can make changes.