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Give Back to Blender

Help funding Blender in 2026

If Blender helped you with your projects this year, we're asking you to help us back.

For the past year, you've had access to professional 3D software, completely free. No subscriptions, no licenses, no limits. Blender has been there for your projects, your learning, your art, your business.

Today, we're asking for $5.

That's it. If every active Blender user contributed $5 this month, Blender Foundation would meet its entire yearly funding goal for 2026.

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Blender 5.0 Manual
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Blender 5.0 Manual

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Compatibility

Blender can open blend-files saved with both older versions of the software (backward compatibility),and newer ones (forward compatibility). This comes with some limitations though.

Tip

When having issues with opening much older (or newer) blend-files, it can help to use a fewintermediary Blender releases to perform conversions by smaller steps.

Note

Here is amore exhaustive documentationabout compatibility handling, in the developer’s documentation.

Backward Compatibility

Opening older files and converting them for the current version of Blender is usually straight-forward.It is expected to give very good and usable results.

There can be major feature changes, for which the backward compatibility will only be ensured fora limited amount of time. For example the changes to the animation system that happened during theBlender 2.5x project. This will never be less than a full major release cycle (i.e. two years at least).

Forward Compatibility

Loss of Data

Forward compatibility is inherently harder to ensure, and loss of feature should always be expectedwhen opening a blend-file saved with a more recent version of Blender.

A warning is shown in the UI when editing a more recent blend-file.Trying to overwrite it (with a simple ‘Save’ operation) will also show a confirmation popup,as this could make that loss of data permanent.

Complete Incompatibility

When Blender switches to a new major version release (e.g. from 3.x to 4.0), there can also be majorchanges that will make the blend-file fully incompatible with older versions of Blender.

In such cases, older Blender will fail opening (or appending/linking from) the newer blend-file, with amessage stating which minimal version is needed to open it.

In such cases, the last LTS release of the previous release cycle will be kept compatible with the newerfile format version, and will be usable as converter between both versions.

For example, Blender 3.6 LTS can open files from Blender 4.x, and will perform the necessary conversionsuch that when re-saved from 3.6, the files become compatible with all 3.x Blender versions.

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