About 18 months ago I had a dangerous thought - "what would I do differently if I were to start again?". The answer was "a lot"! The first 5 years of Rebrickable has taught me so much about building and running a large website, I learned about fields I didn't even know existed :)

For the last year I have been working hard on completely rebuilding Rebrickable from scratch. I estimated it would take me a year, secretly thinking I could probably do it faster. Of course, I seriously underestimated the effort required. 5 years of adding features and tweaking things on Rebrickable adds up to a significant amount of functionality that needed to be rebuilt. There were several times when I considered abandoning the attempt.

I'm very happy (and exhausted) to finally announce it's here!

A big thank you to all the testers over the last few weeks who submitted over a hundred bugs and suggestions for the beta site. Also huge thanks to the admin team who have been providing invaluable input and guideance over the last 6 months, and keeping the ship running while I've been pre-occupied!

What's New - Major Changes

Over the following weeks, I will write some posts that highlight and describe some of the new features and changes in more detail. In the mean time, here is a high level summary.

New Look with Responsive Design

  • Cleaner, more consistent design
  • Works well on mobile/tablet devices (40% of the traffic!)
  • Better support for power users with wide screens
  • A far more personalised experience with many more options to control how you use Rebrickable

Greater Build Engine Integration

  • Faster, more accurate, more flexible
  • Designed from scratch to be more easily integrated into other site features
  • Instantly see what parts you have or are missing on any inventory
  • Mark sets/MOCs as assembled to virtually remove the parts from your buildable collection
  • Better accounting of lost parts and sets-within-sets


  • Have some fun with your account and show off how much of a LEGO fan you are!
  • Be rewarded for contributing to the Rebrickable community

Improved Part/Set Price Integration

  • Far easier to find what you need and manage buying from multiple vendors
  • Better filtering and relevancy of store searches
  • Easily see average prices for parts in any inventory/list
  • Now searches available stores for sets as well as parts
  • Easily see which parts are/are not in the store you are interested in
  • BrickLink search improvements with more accurate suport for duplicate lots and bulk lots
  • Significant Multi-Buy improvements - run on much larger lists of parts, better algorithms, easier to use

MOC Designers

  • Grow your followers faster with easier to use Like/Follow buttons
  • Better Bricksafe gallery integration with automatic slideshows of your Bricksafe pages
  • Better promotion of Premium MOCs with more options coming soon

Manage Your LEGO Collection

  • Improved Brickset integration - synchronise your sets to/from Brickset easier than ever
  • Find your sets/parts easier with improved filtering and display options
  • See estimates of what your LEGO collection is worth!

Other Features

There are far too many changes to list everything. Some of the other changes worth mentioning are below.

  • New end-to-end technology stack and hardware - Every single line of code is brand spanking new
  • Better integration with Brickset/BrickLink/BrickOwl - Keep your LEGO Collection synchronised and accurate across sites
  • Custom Lists - create general-purpose public or private lists of any Sets and/or Parts
  • Set Watches - be notified when LEGO Sets drop below the price you desire
  • Part Photos - we will start to collect more images of parts, including submitted photos
  • Improved Set/MOC/Part submission process and approval workflow
  • Improved searching/filtering of Sets and Parts
  • Multiple Inventory versions for Sets that change over time or region
  • Improved regional support - all currencies and times are displayed according to your local country/timezone
  • Personalisation options - everyone likes different things, customise your Rebrickable experience the way you want it
  • Faster automated MOC approvals if you have a history of accurate submissions
  • Completely new API based on a proper REST framework plus support for multiple API keys per account

Action Required

If you already have an account you will need to do a few things:

  • The avatar images were cropped to square images during conversion. If your profile image does not look good anymore, please update it.
  • MOC designers should review the descriptions on their MOCs. All HTML has been converted to BBCode, and if the source HTML had errors or was too complicated it may not have converted very well. Look for the Admin tab on your MOC's page to edit it.
  • Designer Profiles and User Profiles have been merged. So if you have submitted public MOCs, you should check that your user profile has the correct URLs and display name. All old MOC URLs should redirect to the new ones so you should not need to update any external links pointing to Rebrickable.
  • Check your settings - especialy security and notifications. Make sure your old settings converted across ok, plus there are plenty of new options available in v3 to set if you don't like the defaults.

If you encounter any problems, please use the Forums to submit bug reports or find help from others. Despite the extensive testing undertaken, there are bound to be some issues on a project this large so please be patient while things get settled in :) I'm sure there will be more changes in the coming months as I continue to tweak and improve the experience for everyone.

I know change can be hard, but I hope you all enjoy the new site as much as the old, and find it better than ever!

 Welcome to Rebrickable v3!


  • 3 years, 1 month ago Gutworks Level 10
    I'm really new to the website, and never had the chance to see the old site. But wow, do I ever love this site! I recently pulled out our old lego collection and started to organize it for our daughter who's now recently a lego addict like her older brothers. Keep up the amazing work. Being a fellow web developer, I can only imagine the monumental tasks list you have before you. If you ever need an extra set of eyes for testing, I'm more than willing to help in any way I can or help contribute to the community.
  • 3 years, 1 month ago k5904319 Level 2
    great job bro! but i can't edit my set&part with the new version, there's no response after clicking the button. is there something to do with the browser? l tried safari & chrome.
  • 3 years, 1 month ago TheOneVeyronian Level 3
    Having logged into this site for the first time since the upgrade, I have to say I do like many of the new features. I found the estmated part value function particularly interesting.

    However, it seems that all the private MOC's I uploaded last year have completely vanished since the new Rebrickable was launched, and I can't find the option to submit a new private MOC either. As someone who solely uses Rebrickable to manage LDD builds in order to be able to order the parts needed for them and doesn't want to make the MOC's public, the option to submit a private MOC is vital to me. Is anyone else having this problem? Am I missing something? Is the private MOC option still there or can you only submit public MOC's which require approval now?
  • 3 years, 1 month ago markayak Level 7
    I submitted a set months ago which and finally got a response, which was a rejection claiming it was "grossly inaccurate" (which was quite a shock, since I got it right of TLG's instructions).  The email invited me to try and fix it and I would have loved to, but I no longer have that ability under the new points/levels caste system.  Might want to look into a way to make the response more accurate and less demoralizing to aspiring contributors, because I'm quickly loosing interested in v3 and in contributing to this site.
    • 3 years, 1 month ago Nathan Level 28 Site Admin ADMIN
      I think I just emailed you about this, but yes that's my fault sorry. I am working hard towards resolving all the problems people have with the new site. Please be patient, I am trying my best.
  • 3 years, 1 month ago recce Level 9
    The highlight for owned sets is kinda smallish, maybe can highlight the whole row instead, i.e. highlight the set number plus the "x2" behind it. This way it will be much easiler to spot the owned sets while scrolling the list up/down.
  • 3 years, 1 month ago TobyMac Level 33 Inventory Admin ADMIN
    After a week of working with V3: I love it!
    The admin-part of this site is greatly improved. Much more user-friendly and easier to keep a good overview. Especially adding spare parts is much easier and less error-sensitive.
    Great work on all the new functions!
    • 3 years, 1 month ago Nathan Level 28 Site Admin ADMIN
      Thanks! I'm still dealing with thousands of error messages per day, but I'm slowly getting through them.
    • 3 years, 2 months ago thea Level 29 Inventory Admin ADMIN
      Go to your set list and at the bottom of the set listing for the set you want to delete, there is a little notepad and pencil icon.  That's for editing the set.  Click on it and it will bring up the place where you can delete just that set.
  • 3 years, 2 months ago I3Brick Level 2
    Thanks for all the hard work! Site looks great and I'm really happy with the 'mark as built' option.
  • 3 years, 2 months ago Miro Level 15 MOC Designer
    Can the link such as "rebrickable.com/designer/USERNAME"; (replace USERNAME with actual username) be reactivated or at the least have it redirect? I used it on my business cards that I made and just finished giving at last weekend's Lego convention and now I find it no longer works.
    I think it would help if the font was a bit darker against the white background. I have quite decent eye sight, but it's straining to read pages, especially with the light green against the white.
    Kudos for a huge undertaking. Keep up the great work. Huge undertaking you are doing, so I understand that tweaks will be needed to be made.
  • 3 years, 2 months ago Wendy24 Level 15
    overall : I am so pleased with rebrickable! to be able to sort my Lego sets out without having to build them : I love it! also the possibility to add the missing parts directly to the missingparts list while sorting is great the only but I found uptill now with the new layout:
    the color of the parts is not mentioned in words anymore! so I search the set I want to build or sort and now I can only see the color on the picture of the part ( if there is a picture available) but I really miss the color in words espescially when there is now picture of the part available but also with picture because for instand the difference of the black or dark gray parts are hardly visible on screen I really loved that in the previous layout please add the part color in words again!
    Many thanks to the develloper of this side! I love it!
  • 3 years, 2 months ago Aniomylone Level 17 MOC Designer
    Nathan, thank you for your time and dedication !
  • 3 years, 2 months ago antares Level 21
    My 1st view ... and wow! Great, big thx and happy new Year to Rebrickable :-)
  • 3 years, 2 months ago Funbricks Level 2
    Congratulations!! Thank you for your hard work. The entire community benefits from you and this site.

    Thank you for being willing to improve and not stay static. 

    Very Grateful!
  • 3 years, 2 months ago Krottsy Level 5
    Big thumps up for the new site! Looks spiffing!
  • 3 years, 2 months ago Mikulius Level 7
    Rebrickable should encourage users to leave their profiles public somehow. I collect spare parts and I want to see what others are collecting.
  • 3 years, 2 months ago vagran Level 2
    OK, the first feedback from me: I cannot zoom this article by Ctrl+mouse_wheel. Instead of zooming it scrolls this page. Seems mouse wheel is somehow intercepted by some scripts. That's annoying.
  • 3 years, 2 months ago dkurok Level 17
    I really like the new design and the new features! So many thanks to all of you who made this happen!
  • 3 years, 2 months ago J_C Level 8 MOC Designer
    New rebrickable looks great, amazing actually. so many changes, so many improvements. huge amount of work everywhere.

    I just miss "hottest mocs" section on the top page. That is where I see the most interesting new MOCs. To me, that was the most important feature, now it is sort of missing, or there are only 4MOCs (recommended).
    • 3 years, 2 months ago dkurok Level 17
      I like especially this change - now I have a "dashboard"-kind of view on all changes in the site and can dive deeper if I like...that what the different preferences are :-)
  • 3 years, 2 months ago mscott71 Level 10 PRO
    There is a lot I like about the new design, but easily adding bulk parts to a parts list is not one of them.

    If there is a way to add parts from the parts list page itself, it is not obvious.
    And adding parts by searching the parts requires constantly going back to the search page rather than just having the parts list on the search page like in the previous version.
  • 3 years, 2 months ago recce Level 9
    The buying parts list now very long, previously it only show a handful and can click to expand.

    Now I had to scroll all the way down just to move left/right to see more colour options of the part.
  • 3 years, 2 months ago recce Level 9
    When I list sets with say tile 1 x 2, the sorting previously starts from sets with largest number of that part, now it just sorts in largest set.

    How to change the sorting back to previous behavior? It doesn't make sense to show largest sets, instead should show sets with the largest quantity of that part I'm searching.
  • 3 years, 2 months ago gapracer Level 2
    thanks for this great website! if you could add the "mark as assembled" feature to my costume lists, the site would be perfect for me.
  • 3 years, 2 months ago recce Level 9
    Feels the older parts list layout better, also the collection statistic data and ranking is gone?
  • 3 years, 2 months ago marcelpinheiro Level 4
    Congratulations!!!  great job!!! I only miss the design number, where I can find it, please?
  • 3 years, 2 months ago syclone Level 15 MOC Designer
    • 3 years, 2 months ago Nathan Level 28 Site Admin ADMIN
      There was a lengthy discussion of this already in the v3 Preview forum during beta testing. The Part Lists are different but further usability improvements will be made over time.

      Have you looked at your personalisation options? There are some wide screen settings which you might prefer.
      • 3 years, 2 months ago dkurok Level 17
        Would be nice to have an optional (checkbox) grouping ("accordion" or alike) based on the sort-criterium. Sorting is done in that moment and the grouping and use of grouping-UI-elements (like accordion) is maybe just a matter of HTML/JavaScript/Jquerry/CSS :-)
to your account to add or reply to comments.