Creating an NFT means turning a digital file into a unique, blockchain-verified token that can be owned, transferred, and sold. A single creator can learn how to make an NFT and mint one through a marketplace in an afternoon. Building a full collection, or a platform to run it on, takes longer. Both get covered here, starting with minting through an existing marketplace and working up to the harder decisions behind launching a collection or building infrastructure from scratch.
How does an NFT marketplace work?
What is an NFT marketplace? It’s an online platform where creators mint non-fungible tokens and buyers browse, bid, and buy. It connects a crypto wallet and a blockchain network to a storefront in one workflow, so a creator doesn’t need to write a smart contract or manage blockchain infrastructure directly.
The major marketplaces differ mainly in blockchain support, fees, and how curated the listings are:
| Marketplace | Blockchains | Marketplace fee | Positioning |
|---|---|---|---|
| OpenSea | Ethereum, Polygon, Base, and others | 2.5% | Largest general-purpose marketplace |
| Blur | Ethereum, Blast | 0% | Built for active traders |
| Magic Eden | Solana, Ethereum, Bitcoin, Polygon | 2% | Strong in gaming and multi-chain listings |
| Rarible | Ethereum, Flow, Tezos | 2.5% | Community-governed, multi-chain |
Fees and supported chains change periodically, so it’s worth checking a marketplace’s current terms before listing rather than relying on older figures. NFT Plazas maintains a running comparison of active marketplaces.
Why mint an NFT?
An NFT proves who owns a particular digital item, and lets that ownership move between people without a central authority managing the record. Before NFTs, a digital file could be copied infinitely, with no built-in way to tell an original from a duplicate.
Creators can sell a single digital work directly to a buyer this way, and attach royalties that pay out on resale, without a gallery or platform standing between them and the collector. The same mechanism shows up in business contexts too, in membership passes, event tickets, and loyalty programs where ownership needs to be verifiable and transferable.
Who mints and collects NFTs?
NFTs attract a wider range of participants than early profile-picture collections suggested. Common groups include:
- Digital artists and illustrators creating NFT art and selling original or generative work directly to collectors.
- Musicians and video creators distributing limited editions or fan memberships.
- Game studios issuing in-game items, skins, or land that players actually own and can trade.
- Brands and event organizers using tokens as tickets, loyalty rewards, or proof of attendance.
- Developers and startups building the wallets, marketplaces, and analytics tools this crypto NFT ecosystem runs on.
Well-documented early collections like CryptoPunks and Bored Ape Yacht Club showed that a generative collection could function as both digital art and community membership. That model has since expanded into gaming, ticketing, and brand loyalty programs built on the same token standards.
What you need before minting
A few things need to be in place before you create your own NFT. Most marketplaces expect:
- A crypto wallet such as MetaMask, Phantom, or Coinbase Wallet, matched to the blockchain you plan to use.
- A small amount of cryptocurrency to cover network fees, unless the marketplace offers free or deferred minting.
- The digital file itself (image, video, audio, or 3D model), plus a title and description.
- An account on the marketplace or platform where the NFT will be listed.
Wallet and blockchain choice come first, because they determine which marketplaces, fees, and buyers are realistically available. The next section walks through where each piece fits into the actual process.
The NFT minting process, step by step
How do I make an NFT? That’s the simplest and most common question to start with. The screens differ from one marketplace to the next, but the underlying steps to create an NFT stay consistent across most NFT tutorials:
- Choose a blockchain network. Ethereum, Polygon, Solana, and BNB Chain are the most commonly used for NFTs; the choice affects fees, speed, and which marketplaces and wallets are compatible.
- Set up a crypto wallet. Install a wallet that supports the chosen network and store the recovery phrase securely, since it’s the only way to restore access if the device is lost.
- Fund the wallet, if required. Some marketplaces charge a fee to mint; others use lazy minting, which defers the on-chain transaction, and its cost, until the NFT actually sells.
- Connect the wallet to a marketplace. Platforms like OpenSea, Rarible, or Magic Eden let a creator sign in by connecting a wallet instead of a username and password.
- Upload the file and add metadata. This includes the title, description, properties or traits, and unlockable content where the marketplace supports it.
- Mint the token. Confirming the transaction writes the token to the blockchain, or queues it for lazy minting, under a smart contract that defines its ownership rules.
- List it for sale. Set a fixed price, a timed auction, or an open auction, and the marketplace handles the transaction once a buyer commits.
Steps 1 and 2 are the ones that lock in later choices. Switching blockchains after minting usually means creating the NFT again from scratch on the new network.
Selling an NFT after it’s minted
Selling happens through the same listing created during minting, and a fixed-price sale is the simplest option. Whoever pays the asking price first gets the NFT, which suits creators who’d rather have a quick, predictable sale than wait for a better offer.
Auctions work differently. A timed auction runs for a set window and goes to the highest bidder when the clock runs out; some marketplaces also support Dutch auctions, which start high and decrease until someone buys. An open auction skips the clock entirely, leaving the token listed until the creator accepts an offer that feels right.
There’s also resale royalties, a percentage of future sales paid back to the creator automatically on top of whichever format is used. How reliably that gets enforced varies by marketplace, and has grown less consistent since OpenSea disabled mandatory royalty enforcement in 2023, so checking a platform’s current policy beats assuming it matches older norms.
Which blockchain should you use for an NFT?
The right blockchain depends on the trade-off between fees, speed, and where the target buyers already are. Ethereum has the deepest marketplace liquidity and the most established collections, but its base-layer fees are the highest among major options.
| Blockchain | Typical use case | Relative fees | Notes |
|---|---|---|---|
| Ethereum | High-value art, established collections | Highest | Widest marketplace and buyer reach |
| Polygon | Large collections, gaming items | Very low | EVM-compatible; listed on most major marketplaces |
| Solana | High-volume trading, gaming | Very low | Fast confirmation; separate tooling (e.g., Metaplex) from EVM chains |
| BNB Chain | Budget collections, regional platforms | Low | EVM-compatible; supported by fewer curated marketplaces |
Marketplace support is the practical constraint in most cases. A token minted on one chain doesn’t move to another later, so the blockchain decision should match where the intended buyers are active, not just the lowest fee.
How much does it cost to mint an NFT?
Minting cost depends almost entirely on the blockchain and network conditions at the time, not on the marketplace itself. Gas fees for minting a single NFT on Ethereum have been reported in the range of $50 to $200 during periods of high congestion, while Polygon and Solana typically cost a fraction of a cent under normal conditions, according to TokenMinds’ cost breakdown.
Lazy minting removes the upfront cost for the creator, which is the closest thing to creating an NFT for free. Instead of writing the token to the blockchain immediately, the marketplace stores the file and metadata off-chain and only executes the mint, with the buyer typically covering gas, at the moment of the first sale.
Beyond network fees, most marketplaces charge a commission on completed sales, commonly around 2 to 2.5 percent, with curated, high-end platforms sometimes charging more. Network fees and marketplace commission are the two costs worth comparing before deciding where to mint and list.
Minting one NFT vs. launching a collection
A single NFT and a full collection use the same underlying technology but different production processes. A single NFT is minted once, from one file, usually through a marketplace’s standard upload flow.
A collection, sometimes hundreds or thousands of tokens released together, is typically generated programmatically. Individual traits, like background, expression, and accessories, get combined algorithmically into unique combinations, then minted in batch through a smart contract built for that purpose, rather than uploaded one at a time. Because that contract defines the ownership and behavior of every token it creates, this kind of programmable, rule-based token sometimes gets called a smart NFT rather than a static file.
Two Ethereum token standards cover most of this. ERC-721 treats each token as one of a kind and tracks it individually, while ERC-1155 lets a single smart contract manage many token types, unique or repeated, more efficiently (Ethereum’s token standards documentation). ERC-1155 is common for gaming items and large collections because it cuts the gas cost of minting and transferring multiple tokens at once.
Figuring out how to start an NFT project at collection scale raises questions a single mint doesn’t. A minting website needs wallet-connect functionality built in. Many projects also use a reveal mechanism, keeping metadata hidden until after the mint, and need a plan for demand that outstrips supply. All of this looks more like a small software project than a single upload.
Building an NFT platform from scratch
Using an existing marketplace is the fastest path for a single creator or a small collection. Some teams still end up building their own storefront instead, for a game that needs in-game trading, a brand-owned platform, or a niche curated market with different fee and royalty rules than OpenSea or Magic Eden. Building one comes down to three largely independent pieces.
The smart contract defines the token standard, ownership rules, and any custom logic such as royalties or minting limits, usually written in Solidity for EVM chains and audited before launch. Browsing, wallet connection, listing, and checkout live in the front end, built like any web application with wallet-connection libraries handling the crypto-specific parts. And underneath both, the backend reads blockchain state and submits transactions on request. It checks who owns a token, indexes transfer history, and confirms that a mint or sale actually went through.
That third piece is where node infrastructure comes in. Every wallet balance check, ownership lookup, and transaction broadcast has to reach an actual blockchain node, and running one reliably, for one chain, let alone several, is a separate operational job from building the marketplace itself. Infrastructure providers such as NOWNodes offer API-based access to nodes across 120+ networks, including RPC endpoints for reading state and broadcasting transactions on supported chains, plus indexed data through interfaces like Blockbook where available. That means a marketplace team can query the chains it needs without deploying and maintaining a node for each one.
Teams that go this route are building a product and a piece of blockchain infrastructure at the same time. Most creators stick with an existing marketplace for exactly that reason, and only build their own once the product truly needs it.
FAQ
Do I need coding skills to mint an NFT?
No. Minting through a marketplace like OpenSea or Rarible takes no code, whether you’re making one NFT or a whole collection. It comes down to a file upload and a wallet connection. Code becomes necessary only when you’re building a custom smart contract, a generative collection, or a marketplace of your own.
How long does minting an NFT actually take?
Minting itself usually takes seconds to a few minutes, depending on how quickly the blockchain confirms the transaction. Preparing the file, metadata, and wallet beforehand typically takes longer than the mint.
Do I keep the copyright after selling an NFT?
Usually, yes. Owning the token means owning that specific digital certificate, not automatically the copyright to the underlying work; the marketplace’s terms and any attached license are what actually decide it.
What file formats work for an NFT?
Most marketplaces accept images, video, audio, and 3D model files, with format and size limits that vary by platform. The token itself is just a record on the blockchain; the file it points to is typically stored separately, often on decentralized storage such as IPFS.
Can an NFT’s metadata change after minting?
Some can, depending on how the smart contract was written. Many NFTs have fixed, immutable metadata by design, but a few contracts intentionally allow updates, like revealing artwork after a mint or letting traits evolve based on external conditions.
Does minting an NFT harm the environment?
Less than it used to. Ethereum’s move to proof-of-stake in 2022 cut its energy use by more than 99 percent, and chains like Polygon and Solana were already low-energy by design, so minting on any of these carries a far smaller footprint than the proof-of-work era NFTs are still associated with.
