Good question. Let's go. Cronobook is a Website made with lots of love which will let us to take a trip to the past and see how our streets, squares, facades, harbors, river beds, roads, old roads and other landscapes were like.

Surely you live in a certain zone and you think sentences like:

  • "I still remember when in this street was a kiosk and it doesn't exit nowadays"
  • "This was a two way street years ago and now it's a large boulevard"
  • "I remember the factory that was here before and was demolished 20 years ago"
  • "This fountain was here when I was still a child"
  • "This block of buildings was once a large lot where we played after school"
  • "You can not imagine the old road that connected our house with the grandfather's house. That was dangerous"
  • ...

In Cronobook we intend to create a large map of old photographs (and not so old) geolocated and tagged by date. Thanks to this, you can browse the map of your city and see pictures of a specific area. These photographs will be accompanied by a date and a description added by the user who uploaded it. In the main map you can also filter for the time you want to see (for example, photos of your neighborhood in the 70s).

The most beautiful thing is when there is user participation and the photos are commented. Discussions and conversations about it can occur such as:

  • "I remember that when I was a child, I went to that square to play with my friends. What a pity it has disappeared!"
  • "That's true. And in the kiosk you could buy the best liquorice I've ever tasted!"
  • "But you say this photo is from 1984, I don't think so, it has to be later. Just because Joe's store appears in the background, which I think it was inaugurated the year I entered school, and that was in 1986."
  • "You're right. Please, add the suggestion."
  • ...

Surely you have in your album of photographs where you, your parents or grandparents immortalized a park or a street and you want to share it with the rest of the world. Help us build the largest geotemporal photo album!

When you access to the main page you will see a map that will show you a selection of the best valued photographs of the region shown.

You can move around the map simply by dragging it with the mouse.

It is possible that the browser asks you if you want to share your location with the page. This simply has the purpose of placing the map in the area where you are located and narrowing down the vision of the map, nothing more. If you grant the permission, when you access Cronobook, it will be automatically located in an area closer to your location. If you do not grant permission, you will see a complete world map.

In the upper left part, you have the zoom controls that allow you to show some region, starting from a lower zoom level, showing the complete world map, and zooming in to a highest zoom level, as close as a street.

Another option to change the zoom level is using the mouse wheel: moving the wheel up, you will increase the zoom level; whereas if you move the wheel down, you will decrease it.

Also, you can use the full screen view with which you have a map that covers the entire screen. To exit this mode, you must click again on the full screen icon or simply press the ESC key.

By default, the photographs shown in a region covered may be photographs dated at any time, from 1830 (the time when we found the first photographs of urban landscapes) to the present. But if you want to focus on a specific range of dates, you have the option to filter between two decades. In the upper right you can find a clock icon and, when you click on it, a scroll control will be displayed in which you can set the dates to be included.

Once the initial and final top and bottom decades have been set, you should click on Apply to register the changes and only show photographs of that specific time. It is possible that if you filter too much (that is, that your filter is excessively strict) you will not get results.

You can return to show all the pictures without applying any filter of dates, simply clicking on the Restore button.

The map also has a search engine (in Beta phase) to enter the name of a city to search. This control is located in the upper left.

It is possible to indicate just the name of a city or the name of a city and its country, separated by a comma. This is recommended to be able to refine the searches more, since it is possible that the name of a city is in different countries. Therefore, you can search the city of Valencia in the following ways:

  • Valencia
  • Valencia, Spain

By clicking on the desired result, the map will move towards the pressed location.

The photographs that appear on the map, as we have said, these are the best valued by users within the region shown. If you click on some of them, a balloon with information about it will be displayed. You can see it a little bigger, as well as you can see its title and its date.

If you click on the image, it will take you to the page of that image.

In the same way as on the map, there is a selection of the best valued photos. On the right side of the map you have a section with the most popular and the most recent photos within the region shown.

You can change the most popular photo mode to more recent photo mode using the buttons at the top.

Clicking on any of them will take you to the image page.

Cronobook has a large photo album where the user can filter them according to different parameters, such as:

  • Title: we can look for part of the title of the photograph as "Town Hall" or "Beach".
  • Place: used to filter at the location of the photos, be it cities, provinces, states, etc.
  • Country: drop-down list where we can filter photos from a specific country.
  • Date: the photos belonging to the range of photos indicated will be displayed.

If nothing is indicated, the total number of photos in the Cronobook album will appear.

We can incorporate filters and combine them, for example:

  • Title = "Hotel"
  • Place = "London"

He would surely show us pictures of hotels in London, from any period.

However, if we indicate:

  • Title = "Main Square"
  • Country = "Denmark"
  • Date = 1961 - 1993

The album would show pictures of the Main Square from any place in Denmark, between the years 1961 and 1993.

The user can combine the filters to suit what he wants to find - it's just a matter of trying it out!

As for the results display, we can choose to show an arrangement in grid or in collage mode.

If we opt for an arrangement in grid, the user will see the list of photographs with a regular size (photographs adapted to a rectangular size), like a classic grid.

However, an arrangement in collage mode, photos that are vertical, will appear showing that aspect ratio, so the final result can be posed as a photo mural.

In the end, the user's personal taste will decide the mode of arrangement: a regular ordered grid vs. a photo mosaic as a collage.

On the other hand, the photographs in the album can be shown sorted according to their popularity (from the most popular to the least popular photograph) or according to their recent publication in Cronobook (from the most recent to the oldest published).

The pages of the photographs are the most important of Cronobook, where you can enjoy the images uploaded by our users, see them in large size, see the date of them, read the description of the author, as well as read and make comments about it.

In the upper part, the title that the user has included to baptize the image is displayed.

Just below will appear the date which the photograph belongs. It may be a specific year or a decade.

Below will appear a description of the pic, where the user will have written a personal comment about the image shown in more detail than the one he or she already made in the title.

Below the photograph you will see the number of likes received and the number of times clicked as favorite by the users. This will mainly be, what will influence a photograph to be more or less popular (along with the number of views, comments received, etc.).

To the right of the likes and favorites, there is a button that will allow you to view the image at full screen, ideal for those who want a visualization with more detail of it. When you open the image in full screen, it will fit the size of the browser window. If you click on the image, it will adopt its original size. The original size of the image may be larger or smaller than the full-screen size.

If you are a registered user, you will have the possibility to grant likes y set as favourite (love) the pic you see.

Occasionally, we have not realized that it violates the purposes of Cronobook. It may be offensive, inappropriate, that does not deal with the subject of Cronobook or that the landscape is not the main topic. If this is the case, you, as a registered user, can report this in a simple way: by clicking on the  Inform icon. A complaint of the photo will be sent and our team will review it and take the decision it considers appropriate (remove the photo or reject the request).

The lower part of the description is reserved for comments from users. It is a very important section, where everyone has the opportunity to comment on technical data, experiences that evoke the photograph, or a simple "I played on that street when I was a child!". It is also possible to sort comments by date ascending or descending.

If you are a registered user, when you move the mouse over the comments, a flag will appear that will allow us to report a misplaced comment. By this, we mean offensive comments, with inappropriate language, spam, unintelligible comments (not because it is in another language we do not know, of course), comments with hate, violent or sexual content, etc.

Of course, you can also post comments if you are registered.

On the right side of this page you have extra information about the photograph. For example, at the top appears the user that has uploaded the image, along with their best photographs. It is possible to click on the author to reach his user panel and see more about his photographs.

In some cases, the user who has uploaded the photo is not sure of the exact location of the image, although he knows the area and places it there. If this is the case, a warning will be displayed requesting help to the rest of the users so that they suggest a location those who know it (and want to help the community... ;-) ).

Simply clicking on the link and dragging the location marker to its correct location and saving, it will be sent to our team to be evaluated and, if so, save the new location.

You can also see a minimap, which will place the photograph geographically. Just below it, you will see a link that will allow you to suggest a change in the date of the photograph that was attributed by the user who uploaded it. It is possible that you know the certain date when a photograph was taken (because it is from our neighborhood and we know it for sure, for example) and you want to correct the one submitted by the user who uploaded it. In other cases, the user who uploads the photo does not know the exact date, but does know that it belongs to a specific decade (the 80s, 90s, etc.), so its dating is not very accurate. It is in this case when another user can appear to suggest a more accurate date (1987, 1993, etc.) and refine the dating more.

Below all this, you can see the authorship of the photograph set by the user who uploaded it. In any user has a problem with the authorship of a photograph, he or she could report us it by using the Report icon, where a link to the contact section with our team will appear.

The upload photographs process to Cronobook is very simple. At the top of the navigation bar, a blue icon with a "+" symbol appears. By clicking on it, the system will take you to the upload photos menu.

After the system verifies that you are not a bot (we suppose not, but... who knows!), it will allow you to access the menu to upload photographs.

You can select the photos from your computer in two different ways: either by clicking on the Browse button, where a window will be opened on which you can browse our hard drive and select the images you want to upload ; or, simply dragging the images to the main frame and releasing them. When you have added the photo or group of photographs to upload, you must click on the Upload button and start uploading to our servers.

All this is explained in the table of instructions that appears in the middle area of this page.

At the bottom of this page you will be provided with some indications, such as the maximum number of images that can be uploaded, the maximum size of them, the minimum resolution, etc. In case of not fulfilling any of these requirements, the upload of the image(s) will not be allowed.

But this does not end here. Once you have uploaded the images, you must provide information about them (date, title, description, geolocation, etc.). It would be absurd not to provide this information and, in case of not filling it out, the photos will never appear published. This process is called "Tagging photographs". In fact, after a reasonable amount of time, the system will be able to discard uploaded photographs that are untagged, "orphan" data. But keep calm, it is a long period of time, you can take your time to fill in the data of them. Everything is better if it is well written ;-)

And remember: you only have to upload photographs that are related to the subject of Cronobook. Therefore they should be photographs where the landscape is the main subject, should not highlight people ahead of the landscape. In addition, of course, the upload of offensive photographs or content that does not address the subject of Cronobook is not allowed.

When uploading one or several images, the system will inform you if it have been able to upload them correctly or not. In the positive case, a button will appear indicating Tag photos that will take you to the page dedicated to photo tagging.

In fact, when you have pending photos for tagging, your username in the top navigation bar will appear in another color and it will be noted that you have photos pending to be tagged. This way you will always be informed of pending photos to tag.

When you are already in the tagging page, you will see each one of your uploades photos next to a form, waiting for you to enter the information referring to each of them. Above all the total number of photos you have pending to label will be indicated..

For each of the photographs it is very important that all the fields on the right are filled properly in so that the photo can be labeled. The fields are the following:

  • Title. You must use a short and direct title for your photograph.
  • Description. Here is where you should explain more about the image: history behind it, curious facts, comments about the time, etc.
  • Year/Decade. It is very important to indicate at what time the photograph belongs. If you know in a very precise way the date, you can indicate the year of it. If you do not know, you must indicate at least the decade in which the image was captured. In any case, the users of Cronobook may indicate in their comments about this or send their suggestions to us.
  • Geolocation. Another important point is the location on the map of your photograph. Here you must click on the Geolocate button to place a marker on the map indicating the most exact possible position of the same. Use the zoom for a better fit.

You may not know exactly the location of the photograph. In that case, what you should do is place the photograph in a radius as close to its location (at the city level, at least) and check the box of I'm not sure of the location. If the photograph is published, users will see a notice indicating that we did not know with certainty their location. They can help you by putting the marker in the right place and sending the suggestion.

  • Authorship. Finally, you must indicate the author of the photograph. By default, the name of the user will appear as the author of the image, but this can be modified. Always respect the authors of the photographs to keep Cronobook as clean as possible.

And now, all you have to do is specify the type of license for the photograph. In the next point of the help ("Authorship of the pictures") you have more information about it.

You have everything ready! You just have to click on the Tag pic button and the image will upload to our servers to be validated. Our team will analyze the photograph and, if it matchs the requirements to be published, it will be published in a few days. When the verdict occurs, you will receive news. Be patient meanwhile! :-)

And remember: any data you have tagged for a photograph can be modified by you once the photograph has been published.

This is a point where many of the most doubtful users have. Let's try to make it easy:

  • What about the copyrights of my own pictures?
    If you have photographed the images yourself, you can choose the type of license with which you want to share that image with other users.
    The most restrictive license would be "All Rights Reserved," which means that the photograph could be viewed, but never distributed without the explicit approval of the author (in this case, you).
    A more liberal approach would be "CC Recognition 4.0 International". This Creative Commons license allows the distribution of the photograph, in a commercial and non-commercial sense, as long as the author is clearly mentioned and no modifications have been made to it.
    More information about Creative Commons licenses is available at

  • What about the copyrights of foreign pictures?
    If you use a photograph obtained from a file and it comes with a license, it is YOU MUST keep that license attached to the image you want to upload and propagate it.
    For example, if an image you want to upload has an "All Rights Reserved" license, you should indicate that same license and cite the author of the same.

From this page you can provide personal information to other users, such as your website, your country or a brief personal description. To access it, click on the name of your user in the navigation bar and click on User Settings.

Some of these fields are mandatory, such as e-mail, so you can not continue if you do not fill them in correctly. It should be noted that our e-mail can not be seen by any user of Cronobook, it is private.

It is important to fill this page well, since you can enjoy a better user experience.

If you wish that each time a photo you have uploaded and tagged is published or rejected, you will be notified by e-mail, simply activate this option:

Is possible to modify the password writing it twice (the new one) in the fields destined to it. It has some security requirements and, if you do not want to change it, just do not write anything in these fields.

Your avatar image is very personal. If you do not want a generic user image to appear, you must upload an image from your computer using this panel.

Whenever you want to modify some parameter of your profile, it will be necessary to mark that you have read and accepted the terms of use.

In case you wish to disable the account (Oooh! :-(), we have this option at the bottom of this page. You have two options:

  • Disable an account. Your user will be disabled, but the photos you have uploaded and the comments you have posted will remain available to the rest of the community. Your username will be replaced by a random number (to prevent seeing the previous one you had).
  • Remove the account. This implies that the account is completely deleted, including the images that you have uploaded, the comments you have post and the user completely.

Clicking on the red button, with much regret on our part, you will stop being part of our family :-(

All registered users have their own user panel. By clicking on the name of any user (from the comments, in the authorship of a photo, etc.) you can reach it. To see your own user panel you can click on User Panel from your username in the navigation bar.

From here you can see information about it, as well as a summary of its user statistics: level, points and total number of views of your photos.

In the case of your own panel, a progress bar is also shown that will tell you how much we have left to get to the next level.

Below the user information a link appears to be able to see the photos of the user in question on the world map (only those of the user).

Another way to see your own photos on the map is by clicking on Map panel from your user's navigation bar.

Returning to the user panel, at the bottom, you can see a listing of the images that the user has uploaded. Clicking on them you will access the main page of the photograph.

In the case that is your own panel the one you are visiting, you will see an icon in the upper right part of the list. By clicking on it, it will take you to a page where you can delete any of your already published photos (we do not want you to do that! :-( ). Clicking on the button again, you will return to the user panel page.

We go back to the user panel. On the right side of the panel, the favorite photos of the user will be displayed.

Registered users can enjoy benefits to which anonymous users do not have access. That is why we strongly recommend registering in Cronobook (it's a fast and very simple process!). Also, it's totally free.

Here are the differences between a registered user of an anonymous user:

Non registeredRegistered
See the map
See photographs
See comments of the photographs
Comment photographs
Add likes
Add favorites
Upload photographs
User panel
User photograph map
Report photographs
Report comments

Is not it worth registering? ;-) Also, we repeat, it's totally free.

The process is very simple: click on the top of the Register button and it will lead you to the registration form.

You will only be asked for 3 data:

  • User name. You can check if your desired user name is already busy by clicking on the button on the right.
  • E-mail address. It is very important to provide an account that you can consult, since a link will be sent to that address so you can verify your account. Until you verify it, you will not have finished the registration.
  • Password. You will have to write it down and confirm it in the box next to it. Try to make it a secure password for your own security; it makes it difficult for someone malicious to access your account.

Once you have clicked on the Register button, wait a bit and you will receive an e-mail from us to your email account. Beware, it may sneak into your SPAM folder and do not see it (it's not SPAM, we promise!).

The e-mail will give you the instructions to register your account. Basically you must click on the link that we will provide you and your account will be validated. You have a limited time (24 hours) to validate your account since you register. After that time, the user you specified will be forgotten and you should re-register (and validate!).

Cronobook uses an internal points system that it's applied to its users and photographs. The best valued photographs will be those that hoard the cover of photos on the map. Therefore, the more points one of your photographs has, the more options you have to look at the maps.

When we visualize a map, Cronobook calculates which are the most valued photographs within the visible area of the user and are the ones that will show. Therefore, if on the map we see an entire city, the most punctuated photographs of the city will be shown and if we have a zoom at a continent level, the most punctuated photographs of that continent will be shown.

How does a photograph get points?

If a photograph has increased its number of points it may have been due to:

  • It has been viewed
  • It has received comments
  • Someone has marked it as he/she like it (like added)
  • It has been marked as favourite

The points that get your photographs, will be accumulated in the total of your points, at the user level. Therefore, the points you have will be the sum of all the points of your photographs, plus other points that are achieved by:

  • Upload photographs and have them published
  • Comment photographs
  • Suggest photo locations and have them accepted by our team
  • Suggest dates of photographs and that they be accepted by our team
  • Contribute to keep Cronobook free of inappropriate comments or photographs, reporting them when necessary, and that they are suggestions accepted by our team

When you have just registered, you start with 0 points and on level 1. As you go up your points, you will go up level. Every certain number of points reached, its level will rise. Therefore, for the user level to rise, you should upload photographs, comment on photos, have your photos receive visualizations, write comments on your photographs, have your photos marked as they like others or be favorites, etc.

From your user panel, you can see your user level, your points and the number of views received, as well as a progress bar where you will be shown how much you need to go up to the next level.