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COYODO - COmpare YOur DOcuments ... and more

We help innovative companies
to reduce costs in the Change Process
by accelerating the Comparison and Identification
of Engineering Drawings


Difference View Icon


In particular, our Difference Mask significantly reduces the required time to compare drawing versions. Users focus on the changes and find them with greater confidence. Particularly effective: The auto­matic generation of Difference Views in the background.

ID Stamp for External Drawings


Thanks to a company-specific stamp for external drawings, users can find all relevant internal ID information at first glance, such as part and change number, version, date etc. The time to search whether and which information is somewhere to find is completely eliminated.


Dr. Gerald Keil, Managing Director COYODO GmbH
Dr.-Ing. Gerald Keil, Design Engineer, Computer Scientist, Managing Director of COYODO

Today, the definition of mechanical products is based on 3D CAD geometry. Nevertheless, the Engineering Drawing is still indispensable as a generally accepted "contract document" between design, manufacturing and quality assurance, between customers and suppliers.

Especially for the painstaking recognition of version differences in the engineering drawings, we still see a great need for support. Through innovative solutions, we want to make our contribution to this.

The best example and result is our unique Difference Mask – inspired by countless own drawing comparisons. It makes the comparison much faster and more reliable, and thus enables a software payback period of just a few months.

Real highlights have been created in response to our customers' requirements: A special solution for comparing labels or the Multipage Difference View for comparing electrical CAD documents with several hundred pages.

Our COYODO cloud solution, trimmed for maximum security, enables uncomplicated program tests and offers an attractive subscription model - starting at just 200 comparisons per year.

The next innovations are in the pipeline – fundamentally driven by your needs and our drive for the best possible, user-friendly applications.




The logos are registered trademarks of the respective companies.


For checking the drawings a mega thing.

With the Difference View, our engineers can see all the changes in the engineering drawings at a glance.

At latest, the assembly managers now look only at the Difference View.

My test engineers are excited.

The Difference Mask has again significantly reduced the comparison time in the change process.

Super for looking over.

The tools are a great addition to our process and system landscape.

When we migrated our labels to a new label software, your solution was invaluable for quality control. We were able to evaluate the degree of overlapping very well automatically.

So the current drawing comparison is already a good thing. If I understand correctly, with the intelligent page mapping, a newly inserted page is now no longer compared to a wrong page, right? Yes, that is definitely helpful. Very good!

For me, the monthly development of pixel coverage is interesting. In the first three months after the launch of the tool, pixel coverage has increased from an average of 60% to over 70%, which is a very good KPI.

Thank you for the independent error detection and quick support in troubleshooting!

Engine design now uses the Difference View for drawing release.

The Difference View is mainly used in Engineering, but also in Procurement and Logistics.

In an 18-page document, we found two small field changes immediately.

The direct benefit is bombastic.


You think that your company, your colleagues should also benefit from the time and cost savings of a Difference View? Then take the first step and contact us. Take responsibility! It will also be YOUR success story.


Leybold GmbH (Cologne, founded in 1850) is the oldest manufacturer of vacuum technique and has been part of the Atlas Copco Group since 2016.
Vacuum technology has become indispensable in many fields of application. Leybold is known worldwide as one of the leading manufacturers of vacuum pumps and systems for industrial and scientific vacuum applications.
With the Difference View, COYODO helps to effectively support employees when comparing drawing versions.
(March 01, 2024)


The Austrian company Künz GmbH, based in Hard on Lake Constance, is an innovative manufacturer of container, special and harbor cranes. To ensure that this remains the case, Künz is also investing in internal processes to increase efficiency. The Difference View is generated automatically. A special feature is that many details in the title block, which are always subject to change and are already well documented in the keytech management system, are deliberately ignored in the Difference View. This draws the focus directly to the design changes.
(December 11, 2023)


Parallel to our in-house solution, we now also offer a cloud-based solution that is just as easy and intuitive to use. It has been enhanced with important security features.
You want to test the COYODO Difference View easily and free of charge? An in-house server for the Difference Views is not appropriate for your company? Then get in touch with us!
(November 01, 2023)


Automatically compare two 2- and 3-page versions of an engineering drawing? Or two electrical CAD documents with several hundred pages each? The COYODO Multipage Difference View with automatic intelligent page mapping does just that. Not only does it create a PDF document with all the individual page comparisons. In advance, the matching pages are determined and the individual page comparisons are optimally compiled.
(January 02, 2023)

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