v1.20.5

9001/copypartyv1.20.5Jan 30, 2026by 9001

AI Summary

This release focuses on performance improvements and introduces support for GraalPy and fractional timestamps, alongside fixes for WebDAV and UI interactions.

Key Highlights

Performance optimization replacing a previous 'band-aid' fix for reverse proxies.
New support for GraalPy runtime environment.
Fractional last-modified timestamps for WebDAV clients.
Ctrl-C now copies links of selected files to the clipboard.

New Features

GraalPy support
Fractional last-modified timestamps
Portuguese translation update
OpenRC config test command
Removal of unimplemented `nth` global-option

Full Release Notes

<img src="https://github.com/9001/copyparty/raw/hovudstraum/docs/logo.svg" width="250" align="right"/>

* read-only demo server at https://a.ocv.me/pub/demo/
* [docker image](https://github.com/9001/copyparty/tree/hovudstraum/scripts/docker) ╱ [similar software](https://github.com/9001/copyparty/blob/hovudstraum/docs/versus.md) ╱ [client testbed](https://cd.ocv.me/b/)

there is a [discord server](https://discord.gg/25J8CdTT6G) with an `@everyone` in case of future important updates, such as [vulnerabilities](https://github.com/9001/copyparty/security) (most recently 2025-09-07)

## 🧪 new features

* #1240 webdav clients can now set fractional last-modified timestamps (thx @jcwillox!) 296362fc
* #1260 add support for running the server with GraalPy (thx @vgskye!) 73d06eaf
* #1182 pressing CTRL-C will copy links of selected files to clipboard 9c14972d

## 🩹 bugfixes

* #1248 shares: fix the buttons for extending expiration time b6bf6d5f
* #1242 webdav: fix «MacOS Finder» taking forever to connect (thx @freddyheppell!) 8e046fb6
* ie11 would spinlock in write-only folders 5c4ba376

## 🔧 other changes

* fast again! ed6a8d5a
  * replaced the `connection:close` band-aid added in [v1.20.4](https://github.com/9001/copyparty/releases/tag/v1.20.4) with a proper fix that doesn't make things slower behind reverseproxies
  * I've tried everything I can think of (with nginx as reverseproxy) and can't notice any difference in behavior, but please let me know if this breaks anything for you 🙏
* #1245 updated Portuguese translation (thx @000yesnt!) 69fa1d10
* #1259 OpenRC: add command to test config (thx @lotsospaghetti!) 79273a7d
* #1257 removed the `nth` global-option because it was never implemented (thx @stackxp!) 22cdc0f8
* syntax highlighter: added languages `nasm` + `nix`, removed `autohotkey` + `cmake` b20d3259

## 🌠 fun facts

* http/1.1 still tends to be faster than http/2 and http/3 for large transfers which is the main reason copyparty hasn't made the change
  * eh, not really a *fun* fact I suppose ┐( ´ w `)┌

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## ⚠️ not the [latest version](https://github.com/9001/copyparty/releases/latest/)!