Terrasavr
A downloadable program for Windows, macOS, and Linux
This page offers an offline-friendly version of Terrasavr.
Once you have launched it once (and it has synchronized files with the online version), you can run if offline and it'll continue showing the last update that it downloaded.
Note: for the same reason (syncing from site), itch files are not updated at the same time as site version is - only when changing features specific to offline UI.
If you are using a Chromium-based browser, you may also install Terrasavr as a web app much to the same effect.
If something breaks, tell me on Twitter or on Terraria forums' topic.
Download
Click download now to get access to the following files:
Development log
- 1.4.5.7 compatibility18 days ago
- French localization and new prefixes40 days ago
- Research Tracker for 1.4.5May 13, 2026
- 1.4.5 compatibilityJan 28, 2026
- Terrasavr+ mini-updateJul 01, 2024
- Terrasavr+Mar 22, 2023
- Permanent buffs and small fixesNov 10, 2022
- Terranion and research tracker updatesOct 06, 2022
Comments
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There appears to be a small bug in how favorited armor and accessory slots are loaded; they are mutating into other items entirely.
Hi Vadym,
I've been following your work since 2013 and Terrasavr has been part of my Terraria routine for years, so first of all: thank you for keeping it alive this long.
When 1.4.5.7 came out the editor stopped saving correctly, and rather than just wait I decided to have a go at it myself. I've got a working build now that handles 1.4.5.7 properly, including the new items and prefixes. It's purely for my own use and I haven't shared it with anyone.
I'd like to send you the changes privately, in whatever form is most useful to you — a summary of what changed in the save format plus the updated ID tables, a diff, or the build itself. Whatever saves you the most time. If you think it's worth it, it's yours to use however you want; if not, no problem at all. Obviously I won't distribute anything without your say-so — it's your project.
I've also been working on a couple of additions that I think could be genuinely interesting, and I'd be happy to walk you through those too.
This is all non-commercial, just a fan who's admired your work for over a decade. I wasn't sure how to reach you directly — what's the best channel for you? Email, Discord, wherever suits.
Thanks for everything.
Hello, both work (see About & Contact) - Discord is slightly inconvenient since it only shows the last 100 conversations in DMs (why would anyone want this), but instant chat sure is nice
1.4.5.7 is out! Though the current version of terrasavr doesn't work for it now.
Yeah, that’s a lot of changes
I don’t get access to these updates early so I’ll only be able to start looking into it when time permits - at best on this weekend, more likely on the next weekend
Well, regardless i am looking forward to it! Thank you
Modifier convenience suggestions for Terrasavr:
Cheers, I’ll have a look next time I update Terrasavr - the modifier menus are currently a quick fix.
I downloaded the plus version but I can't figure out how to open it, I just have an .html and a .js in the .zip (aside from the other folders)
I'll admit here that I'm not the best with computers beyond digging through files, and have no clue how to run this plus version
Hello, you extract the ZIP archive somewhere, and then you open the .html page in a web browser. Not unlike when saving a web page.
I downloaded Terrasavr-Win and it is stuck at loading screen. Please help me
Try Terrasavr+ instead - that one’s just a page that you download, not a whole app.
Ty
Won’t hurt to try, but I wouldn’t have my expectations high - a TModLoader character editor ultimately has to be a TModLoader mod so that it knows what all the new items are.
there is a bug where when you apply modifiers to weapons, they default to the worst ones. Example: Mythical tunrs into Lazy or Ignorant. (This is probably not a bug, but something that ReLogic did to combat the use of this)
If you apply an incompatible modifier, the game changes it to whatever it feels like when you load the character.
I’m yet to figure out a reliable way to tell which modifiers an item is compatible with to indicate this in Terrasavr.
The save/load for the equips section only affects the ammo while everything else stays the same.
I am assuming the loadouts messed it up.
It looked like you have not checked the Terraria forums for the past three weeks, so I thought I would mention it here.
I have seen the report but I’ve not gotten to it yet - I’d like to also rewrite it to use JSON instead of a fragile binary format. You can get an overall impression of how many projects I’m maintaining in my spare time if you follow me on itch and GitHub.
Ah, okay.
I just wanted to confirm that you did see it. I guess I should have mentioned that.
I have actually been following you on itch, and checking out your GitHub and blog from time to time.
As an amateur programmer myself, much respect.
Why does my character say (UnknownError) I did everything right and it keeps doing it
1.4.4 added a few hundred bytes worth of data at the end of file (mostly loadout items and some flags such as for… unlocked carts, apparently?), which characters created in Terrasavr from scratch don’t have, much to game’s disappointment.
You can either:
(as to why the game doesn’t offer to do this automatically, that’ll remain a mystery)
The next update (maybe today or tomorrow - it’s a bunch of work) will have loadouts implemented so that will be gone.
The Labor of Love update changed the maximum number of buffs and debuffs on the player from 22 to 44, but Terrasavr's buff section has not increased in slots yet.
I suppose you missed that part because it was only mentioned in the full change log inside spoilers.
I did not miss it, but I did not think that people would want to see all 44 of the buffs in Terrasavr. I have since uploaded a new version that adds the two extra rows to UI.
update for 1.4.4?
Updated 1 hour before your comment - may need to hard-refresh (Ctrl+Shift+R)
Irá ter para Android??
You can open the web version of Terrasavr in mobile browsers.
Is there/are you planning on making an offline version of your Journey Mode Research Tracker?
I can look into that for the next version - I think I can get that one to work when the page is saved since it doesn’t do anything remotely complex.
Thanks for the reply!
This would be a very useful tool for me, since I am a bit of a completionist :)
Does it work on Terraria 1.4.3?
Updated earlier today - may need to hard refresh (Ctrl+Shift+R in browser, use the menu in the downloadable version)
Great,thank you!
thank's bro
Hey what about offline app for mobile
Picking “add to home screen” should cache the app for offline use.
Hey, is there any mirror for the offline versions? I'm facing a 403!
As in, when downloading the ZIP from itch.io? Pretty cursed if so. And what version do you need?
That's right. Several times, different ETA. I'm aiming at the Windows version.
Here you go: https://drive.google.com/file/d/1sxcmScBys6gANaBgkXWsUC87ptgqTanq/view?usp=sharing
Thank you man 😄
Hi are you gonna update terrasavr to lasted update of Terraria?
Because ive noticed new item from update are shown as unknown in terrasavr.
I did update Terrasavr few days ago. If you are using the offline version and it's still showing the update date as June/July, pick View➜Force reload. In browser, that is done via Ctrl+Shift+R.
tnx its working correct now
I keep getting a 500 internal service error.
My entire website is down (so downloading the offline version won't work if you never ran it prior to cache the files), but you can use the archive https://web.archive.org/web/20200901123819/https://yal.cc/r/terrasavr/
When i get ingame with the terrasavr created character it has the grid that u get from the ruler item permanent enabled any clue how to fix is that a common bug with the new terraria version? not that big of a deal but still annoying when i play
That's an setting in the options menu, isn't it? Might be saved per-character
nah not the grid option in the settings its like i have thr ruler item equipped but i dont its like the big blue grid that also tells u the specific block measuremeants thanks for the pretty quick reply tho
If you can send me the character file via email/discord, I can take a look at whether it has anything to do with Terrasavr
Terraria doesn't read the edited character, even after changing the name.
I'm on mobile Terraria 1.3.0.7.
I use esfile explorer.
I do not have an Android device at hand, but ES does not seem to be showing file extensions at all, meaning that the downloaded file might not be a PLR. Try something more technical like Total Commander.
The character shows up as a blank with a red question mark (?) In the game character menu
If you are copying a character from PC, make sure to change version on the first tab to be what the mobile is (1.3.x) and not 1.4+
I'm doing it all on mobile, and I make sure it's on the 1.3.x setting.
Can't download it I tried using Flash Player (Updated it 4 times)
tried using chrome to open but it downloaded the file again
Same as with person below - you probably need flash player projector, not just a regular one.
Okay I downloaded it and I know its compatible because my I'm using chromium and my pc is 32bit (Download the Flash Player content debugger for Opera and Chromium based applications – PPAPI) So now how to I open the .swf file? Because every time I try opening it using chrome it redowloads Terrasavr.swf
You need the "Download the Flash Player projector" for your according platform. Not a content debugger. Not projector content debugger. Just projector. Projector is like a video player, but you give it SWF files to play.
Okay. Thank you, and sorry for being stupid
Somehow i only see a blank screen when i open the .swf file. The flash version on website works fine though... Can you help me?
It's possible that your flash player projector is broken and/or outdated and you'd need to download a new one.
Been using this for probably more than a year, paid a small coffee i guess.. Good program.
Thank you!
I can download the game, but somehow, when I run Terrasavr.swf, this message appears.
ReferenceError: Error #1069: Property setTo not found on flash.geom.Rectangle and there is no default value.
at Main/ds2x()
at Main/init()
at Main/onAdded()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at DocumentClass()
at Type$/createInstance()
at ApplicationMain$/start()
at ApplicationMain$/init()
at lime.app::Event_Void_Void/dispatch()
at lime.app::Preloader/start()
at openfl.display::Preloader/display_onComplete()
at flash.events::EventDispatcher/dispatchEventFunction()
at flash.events::EventDispatcher/dispatchEvent()
at NMEPreloader/onLoaded()
at openfl.display::Preloader/start()
at lime.app::Preloader/current_onEnter()
Can you help me, in by any chance?
I think you might have to update Flash Player (or pick the newest to open files if you've got a bunch installed) - that doesn't happen unless the thing is ran through a fairly outdated (pre-2013?) one.
The download doean't work in any ways. Could you please choose another website and upload again? I really like this tool because of easement. (Thanks a lot for programming this.)
Define "doesn't work"? Alternatively you can "save as" the SWF from the website directly if you must.