Downgrade Premiere Pro 2021 to 2019: v39 → v35 .prproj Converter

Downgrade Premiere Pro 2021 to 2019

Drop your Premiere Pro 2021 .prproj and get a copy that Premiere Pro 2019 opens. Everything runs locally in your browser.

Downgrade panel

100% local. No upload.

Drop your .prproj here

Saved in Premiere Pro 2021? or click to browse. Multiple files are fine.

Open it in

Always keep your original. Downgrading bypasses the version gate and repairs known format differences, but effects and features from newer releases cannot be interpreted by older builds. After opening, import the sequences into a fresh project.

Premiere Pro 2021 vs Premiere Pro 2019: what is different?

Premiere Pro 2021 (15.x, released Mar 2021) saves projects with internal schema version 39. Premiere Pro 2019 (13.0, released Oct 2018) only understands up to 35, which is why opening the file shows “This project was saved in a newer version of Adobe Premiere Pro”. The message is a gate, not a judgement about the content.

	Premiere Pro 2021	Premiere Pro 2019
Release	Mar 2021	Oct 2018
App build	15.x	13.0
Project Version attribute	`39`	`35`
XML serialisation	Dense (full fields)	Dense (full fields)

What the converter changes in your file

A .prproj is gzip-compressed XML. The tool decompresses it, edits the root Project element, and compresses it again:

- <Project ObjectID="1" ClassID="62ad66dd-0dcd-42da-a660-6d8fbde94876" Version="39">
+ <Project ObjectID="1" ClassID="62ad66dd-0dcd-42da-a660-6d8fbde94876" Version="35">

Both 2021 and 2019 use the dense serialisation, so no fields need rebuilding. Changing the version is the only edit required.

What you may lose going from 2021 to 2019

Features below were introduced after Premiere Pro 2019. Their data may stay in the XML, but Premiere Pro 2019 has no code to interpret it, so expect them to be ignored, flattened or missing:

Added in Premiere Pro 2021

Productions workflow becoming mainstream
Large under-the-hood project format changes (community reports a hard barrier between 2021 and 2020)

Added in Premiere Pro 2020

Auto Reframe (AI reframing for vertical and square)
Time remapping up to 20,000%
HDR10 metadata on export

Why this jump is rated high risk

This crosses the 2021 → 2020 boundary where Adobe changed the project format substantially.

Step-by-step: open a 2021 project in 2019

Duplicate your .prproj. Never convert your only copy.
Drop it into the panel above and choose Premiere Pro 2019 as the target.
Download the converted file and open it in Premiere Pro 2019. Expect a prompt about converting an older project, which is normal.
Create a brand new empty project in Premiere Pro 2019 and import the converted project into it, rather than continuing in it.
Scrub every sequence. Relink media if drive letters or paths differ.

Don't have Premiere Pro 2019? Open the Creative Cloud desktop app, choose All apps → Premiere Pro → Other versions and install it alongside your current version.

Frequently asked questions

Can I open a Premiere Pro 2021 project in Premiere Pro 2019?

Yes, in most cases. Premiere Pro 2019 refuses Premiere Pro 2021 files because the project carries version 39 while Premiere Pro 2019 only accepts up to version 35. This tool rewrites that number to 35, so Premiere Pro 2019 loads the file instead of showing "saved in a newer version". Risk for this jump is high: 2 major releases apart.

What will I lose downgrading from 2021 to 2019?

Anything that only exists in newer releases cannot be interpreted by Premiere Pro 2019. That includes Productions workflow becoming mainstream, Large under-the-hood project format changes (community reports a hard barrier between 2021 and 2020), Auto Reframe (AI reframing for vertical and square) and Time remapping up to 20,000%. Basic cuts, tracks, clips, markers, transitions and effects that exist in both versions normally survive, but always check the timeline after opening.

Why does Premiere Pro 2019 say the project was saved in a newer version?

A .prproj is gzip-compressed XML and the root <Project> element stores an integer schema version (2021 = 39, 2019 = 35). Premiere reads it before anything else and stops if it is higher than its own.

Is my 2021 project uploaded to a server?

No. Decompression, editing and re-compression run inside your browser using JavaScript and the native Compression Streams API. Your project file never leaves your computer, and there is no backend.

Is it safer to go 2021 → 2019 in steps?

Not with this method, because only the version stamp and a few fields change, and Premiere Pro 2019 reads the result directly. What does help is opening the converted file in Premiere Pro 2019 and importing its sequences into a fresh empty project rather than continuing to work in the converted one.