Valheim Seed Map Viewer: How to Use the Seed Viewer in 1.0

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See any Valheim seed map with the free valheim-map.world seed viewer: find your seed, pick the right 1.0 world version, spot Haldor, bosses and crypts.

Valheim key art with two Vikings at a campfire in a dark forest

You want to see a Valheim seed map before you sail anywhere: where the biomes are, where Haldor stands and how far the bosses are. The seed viewer we point people to is valheim-map.world, a free browser tool that calls itself the Valheim World Generator (an unofficial fan project). You type in a seed and it draws the whole world that seed produces: every biome, the coastline, and markers for points of interest such as Haldor the trader, the boss altars and crypts. Nothing to install, and you do not have to explore a single tile in game first. On a phone the site sends you to its mobile version at m.valheim-map.world.

Quick answer: To see a Valheim seed map, open the free seed viewer at valheim-map.world, type your world's seed (not the world name) into the seed box and leave World Version on the newest option, 1.0.7, which covers worlds made since the 1.0 release. The map shows every biome plus Haldor, the boss altars and crypts. For a world made before 1.0, open it once in Valheim 1.0, then upload its save files instead, because 1.0 reshuffles an old world's unexplored locations.

Below is the order that works: find your seed, enter it with the right world version, read the map, and upload your save files when the seed alone is not enough. Then come a checklist for judging a new seed and the exact steps to put your seed on a dedicated server, so your group can play it whenever they want.

Step 1: Find your world's seed

For a world on your own PC, the seed is printed under the world name on Valheim's world select screen. Copy it exactly as it appears.

Dedicated servers are where people usually go wrong. The name you gave the world is not its seed, and typing the world name into the viewer gives you a completely different map. The seed lives in the world's save files, so download them from the server first (on a rented server that is normally FTP or the panel's file manager). Then give the site's seed extractor, the Find My Seed page, one small file: for a 1.0 world the latest _main.N.fwl2 from the world's folder, for a world in the old format WorldName.fwl. It reads the seed out of that file and does not need the .db2 or chunk files.

Step 2: Enter the seed and set the world version

Paste the seed into the seed box at the top of valheim-map.world. Then look at the World Version setting before you trust the map. The site asks for the version of the game when the world was created, not the version you play now. That matters because world generation has changed between big Valheim updates, so the same seed can put locations in different spots depending on when the world was made. The (?) next to the setting explains the rules, and on 31 October 2026 they were short:

  1. A world you are about to create: keep the newest version, the default.
  2. A world made on or after the 1.0 release: pick 1.0.7, the newest version the viewer lists, even though the game's latest patch is 1.0.21 (28 October).
  3. Anything older counts as obsolete. You can still pick it, but the site warns the map will be wrong, so upload the world instead (see below).

Map quality has three levels. Medium is the default, High is sharper but much slower to generate, and Low is handy when you are flicking through a lot of seeds.

Play this seed on your own server

Found a seed your group wants to play together? A Valheim dedicated server has no seed setting, so you cannot type the seed into the server's config. You create the world with that seed on your own PC, load into it once so the game saves it, and upload the world files to the server. The full steps are further down, just before the FAQ.

Our Valheim server hosting gives you FTP access to the worlds folder for that upload, and the world stays online when you log off. They accept Windows (Steam) players only, so everyone in the group needs the Steam version on Windows.

Step 3: Read the biomes on the seed map

Each biome gets its own colour, and you can change the colours in the settings. The legend covers Meadows, Black Forest, Swamp, Mountain, Plains, Mistlands, Ashlands, Deep North, Ocean and Shallows. The Ashlands sit at the southern edge of the world and the Deep North at the northern edge, so expect them near the bottom and top of the map.

Valheim 1.0 also added alternate versions of earlier biomes out towards the edges of the world (Iron Gate lists them in the 1.0 patch notes). The viewer has a separate colour setting for alternate biomes, and you can click one on the map for more detail, which helps if you want to find them on purpose. Since 27 September the map also has a Height layer.

Step 4: Find Haldor, the bosses and crypts

Points of interest sit on top of the biome map as icons. You can switch them to dots or change their size in the settings if a busy map gets hard to read. The three most people look for first:

  • Haldor the trader. Since 1.0 he also sells inventory upgrades (Deeper Pockets and Wider Pockets), so a trader close to spawn is worth more than it used to be. The map can show several possible spots: the Valheim Wiki says a world has 10, all in Black Forest, and he stays at the first one anyone approaches.
  • The boss altars, so you can see how far each Forsaken fight is from where you plan to build.
  • Crypts, which you will want nearby once you need iron.

You can drop your own pins, save seeds as favourites, and share a link to the world. A plain link does not carry your custom pins, though. For that the site has lobbies: one shared map where your group can add and tick off pins, with a view only link and a view and edit link.

What the map cannot show: ore, Finewood and Thistle (the site says the vegetation layer takes far too long to calculate for a whole world) and the Sea Serpent, which is a random spawn around players.

When to upload your world files instead

Typing a seed works for worlds created on 1.0. If your world is older than Valheim 1.0, which came out on 9 September 2026, the seed alone will not place every location correctly. The viewer's help explains why: the first time 1.0 loads an old world it upgrades it, and that re-randomizes the unexplored locations in a way nobody can predict. Iron Gate's 1.0 FAQ adds that in an old world, biome generation only works properly in areas nobody has explored yet.

So the order is: open the old world in Valheim 1.0 and let it save, then use the upload button next to the seed box. On that first load the game converts the world to the new folder format (Iron Gate's notes on the new save system say it makes a backup first). The viewer then reads the real locations from your save rather than predicting them.

Select two matching files from the world's folder at the same time, such as _main.4.fwl2 and _main.4.db2. If the folder holds several numbers, take the highest: the viewer treats that pair as the newest save. You do not need the .chunks or .chunk files. The upload still accepts an old WorldName.fwl and WorldName.db pair, but the locations in a world that 1.0 has not opened yet will still move when it does.

On Windows, local worlds are in %userprofile%\AppData\LocalLow\IronGate\Valheim\worlds_local, and Steam Cloud worlds are under Steam\userdata\<your Steam ID>\892970\remote\worlds. For a world on a dedicated server, download the files from the server first. Uploaded locations only reach your friends through a lobby; a plain share link leaves them out.

One limit to know about: mods that change world generation, such as Better Continents, make the viewer's map wrong, and the site does not support them.

How to judge a seed on the map

Once the map is up, a few things separate a comfortable world from a long one:

  • A Meadows start big enough to build in, with Black Forest right next to it
  • Swamp and Mountain within a short sail, since those gate your iron and silver
  • Boss altars that are not each on a different far-off island
  • Haldor within reach early, now that he sells pocket upgrades
  • A sheltered bit of coast near spawn for a dock and a portal hub

A solo player gains the most from a compact map. A bigger group can live with a spread-out world, because several people can sail in different directions at once. If you would rather start from seeds other players already picked, our Valheim best seeds list has ready-made picks, and this viewer is how you check them before you commit.

No seed yet? The site's Seed Search turns that checklist into rules. Pick a preset such as early bosses or traders nearby, add must-haves (Seed Criteria) and nice-to-haves (Seed Ratings), and press Start. Your browser tests random seeds with the same generator as the map and lists the best rated matches first, each with a link to the full map. It cannot search dungeon contents yet. For world modifiers and modded world generation, see our Valheim world generator guide.

Putting your seed on a dedicated server

Start a dedicated server with a world name it has never seen and it makes a new world with a random seed. Iron Gate's server guide lists no seed option, only -world, which loads an existing world by its name or creates a new one. To play the seed you picked:

  1. Create the world in Valheim with that seed and load into it once, so the game saves it.
  2. Stop the server and upload the world to its worlds folder. For a 1.0 world that is the whole world folder. A world from before 1.0 is the .fwl and .db pair, which the server converts on first load.
  3. Set the server's world name to the world's name exactly (not the seed) and start it again.

If the names do not match, the server makes a fresh random world instead. On a Space-Node server you upload the world folder over FTP.

FAQ

What is the best Valheim seed viewer? We recommend valheim-map.world, a free, unofficial tool that calls itself the Valheim World Generator. It shows every biome, marks the trader, boss altars and crypts, reads locations from your save files, and has a Seed Search for new worlds.

Does the seed viewer work with Valheim 1.0? Yes. Its legend includes the Deep North, the Ashlands and the 1.0 alternate biomes, and its newest world version, 1.0.7, covers worlds made since the 1.0 release. Open a pre-1.0 world in 1.0 once, then upload it.

Why does the map not match my world? Usually one of four things: the wrong seed (often a server's world name typed in as the seed), the wrong world version, a world older than 1.0 that needs its files uploaded, or a mod that changes world generation.

How do I find the seed of a dedicated server world? Download the world files from the server and give the seed extractor one file: the latest _main.N.fwl2 from a 1.0 world folder, or WorldName.fwl for an older world. It reads the seed from that file.

Can I set a seed on a Valheim dedicated server? Not directly. Create the world with that seed on your PC, upload it, and set the server's world name to match.

Can the site find a good seed for me? Yes. Its Seed Search tests random seeds in your browser against rules you set, such as a trader near spawn or Black Forest you can reach without sailing, and lists the best matches first.

Related: Valheim world generator guide, Valheim best seeds, Valheim bosses in order, Valheim dedicated server

Sources

All opened on 31 October 2026: