S3 File Browser: How to Access an S3 Bucket From Your Browser
October 2026 · 11 min read · Surya
How do I look inside an S3 bucket from a browser without installing anything?
If you have exactly one cloud, the answer is the console you already have: the AWS S3 console, the Cloudflare R2 dashboard, the Backblaze B2 web UI. Free, authoritative, always current with that provider's newest features. Type your credentials, look at your objects, close the tab. Done.
If you have buckets in three different providers and you are tired of keeping three tabs and three sets of credentials straight, the answer is an s3 file browser that spans providers, which is a different product built for a different problem. This article is going to tell you which of those two to pick, and it is going to spend most of its length telling some of you that the answer is rclone and you should stop reading.
Let us get the search intent out of the way first: "how to access s3 bucket from browser" and "s3 bucket browser" both mean roughly the same thing, and both are answered in the first two paragraphs above. What follows is the part where the answer gets uncomfortable.
The question is really "where do I want to be standing when this happens?"
The search term does not tell you which product you want. The standing position does. Three people type "s3 file browser" into Google and they want three different products.
The first person wants a tab. They are at a laptop that is not theirs, or on a machine where they cannot install software, and they need to see whether last night's export landed in the right prefix. They have no interest in a filesystem. They want a URL, a login, and a list of keys. This is the case a browser genuinely wins, and it is the case a mount loses badly, because mounting a remote bucket to answer "did the file arrive" is like hiring a locksmith to check whether the door is locked.
The second person wants a drive letter. They want /mnt/media or Z:\ to be the bucket, and they want their video editor, their IDE, their rsync, their backup tool to treat it as a folder. They will open files, seek inside them, and expect the operating system to behave. This is a mount problem and it is a solved one, and a web browser is not the answer. Not our browser, not anyone's browser. A browser cannot give you a filesystem.
The third person wants a command. They are writing a deploy script, a cron job, a CI step. They want the operation to be composable, idempotent, and exit with a status code. They will pipe it into jq. They want it in version control. A GUI is actively worse here, not just unnecessary.
All three are legitimate. The mistake is picking the tool because of the search term rather than because of where you need to be standing when the operation happens.
| What you actually need | What wins | Why |
|---|---|---|
| Look at objects in one cloud, no install | That provider's own console | Free, authoritative, newest features first |
| Look at objects across several clouds, no install | Storafleet browser, or a desktop client if you accept an install | One credential store, one search box, one bill view |
| Remote buckets as a local folder | rclone mount, Mountain Duck, ExpanDrive | FUSE or a filesystem driver. A browser cannot do this at all. |
| Automation, CI, cron, repeatable scripts | rclone, or the AWS CLI / s5cmd | Exit codes, stdout, version control, no session |
| One person, a few buckets, no subscription | Cyberduck, S3 Browser | One-time or free, files stay on your machine |
| Google Drive, Dropbox, OneDrive, SFTP, WebDAV | rclone or MultCloud | We deliberately do not connect those at all |
Read that table as a decision aid, not a scoreboard. Four of the six rows do not name us, and one of them names us only as a co-winner.
The provider's own console is free and always current, and for a single cloud it is often the right answer
If everything you own lives in one cloud and always will, we are a worse choice than the console you already have open. Not a slightly worse choice. A worse one. I want to be plain about that before I describe what we built, because the alternative reading of this article ("here is a nice web UI, also here is a paragraph of legal cover") is a genre of blog post I dislike.
Here is what the AWS S3 console gives you that we do not. It is first-party. When AWS ships a new storage class, a new bucket policy condition, a new S3 feature, the console knows about it on day one and we find out when the API docs change. It is authoritative in the sense that matters: if you and the console disagree about the state of a bucket, you are wrong. It costs nothing, and it is already authenticated with whatever IAM setup you have, which means you never hand credentials to a third party at all. That last point is not a small one.
The same is true of the Cloudflare R2 dashboard, the Backblaze B2 web UI, the Wasabi console, and the rest. Each is the best possible UI for its own provider, because it is the provider's own UI. If you are a single-cloud shop, our honest recommendation is that you use it and spend the money you would have spent on us on something else.
There is no pivot coming. If your answer to "how many providers do you have" is "one, and that is not changing", the rest of this article is not for you.
Where a cross-provider browser earns its keep, and where it does not
The moment the second provider shows up, the console model breaks. Not dramatically. It breaks the way most operational things break: you have a bucket in R2 for egress-heavy assets, a bucket in Wasabi for the archive tier, and a bucket in Amazon S3 because one vendor's SDK only speaks to the real thing. Now you have three consoles, three credential stores, three search boxes, and no single place to answer "where is customer-4471-final.mp4 and what is it costing me to keep it there".
That is the problem the Storafleet file browser exists to solve, and it is genuinely all it exists to solve.
What it actually does. It connects 50+ S3-compatible providers plus any custom S3 endpoint: Amazon S3, Cloudflare R2, Backblaze B2, Wasabi, MinIO, DigitalOcean Spaces, Oracle Cloud, IBM Cloud Object Storage, Scaleway, Linode, Vultr, Storj, IDrive e2, Hetzner. You browse, upload, and download objects. You search across every bucket you have connected at once, not one provider at a time. You configure CORS, lifecycle rules, versioning, object lock and public access from the same screen you are looking at the objects in, which sounds like a convenience and is actually the difference between shipping a lifecycle rule this quarter and shipping it next quarter. There is duplicate detection across buckets. There is per-bucket cost visibility, which is the feature people do not ask for and then use every day.
On credentials, which is the part that should worry you. They are encrypted at rest with AES-256-GCM using per-namespace HKDF keys, and if you are on AWS you can skip keys entirely by connecting via IAM role assumption. That is a real answer. It is not the strongest answer, and I will get to the stronger one in the next section.
On pricing. Flat subscription. We do not charge per gigabyte to move data, and migrated bytes are unmetered on every tier including Free. Tiers differ on concurrent migration jobs and scheduled sync, not on volume. This matters because the pricing model you are comparing against, if you are looking at managed migration services, is usually per-terabyte and it usually surprises people in month two.
Now the limits, stated as limits rather than as footnotes.
- No FUSE. No mount. Nothing in Finder or Explorer. We cannot make a bucket look like a folder, and if that is the job, we are the wrong tool. Full stop.
- S3-compatible only. No Google Drive, Dropbox, OneDrive, SFTP, WebDAV or Box. If your job is Drive-to-bucket, we do not do it.
- Not composable. We are a console, not a command. No exit codes, no stdout, no cron, no Makefile target. A web UI will never compose the way a binary does and we are not going to pretend otherwise.
- No published case studies, no named customers. We will not invent them, so you get this paragraph instead.
- Small team. Started 2026. On the question "will this still exist in five years", a decade-old open-source project has a better answer than we do, and you should weigh that.
What to install instead, depending on the sentence you just recognised as yours
If your budget for this is zero, the conversation is over and rclone wins. Not "rclone is a good alternative". rclone is the answer. It is free permanently, with no account and no vendor, it supports 70+ backends including the consumer clouds we do not touch, it mounts, it is scriptable, it runs inside your own security boundary so your keys never leave your hardware, and it has been maintained for over a decade. If you read the previous section and thought "that is a lot of money for a search box", you are probably right about your own situation, and you should go install rclone.
And be honest about what that costs you, because it costs you something. rclone mount gives you a real filesystem view of a remote bucket: rclone mount remote:bucket /mnt/bucket and then ls, grep, ffmpeg and your editor all just work against it. It is scriptable in a way nothing with a login page can be. rclone copy, rclone sync, rclone check compose into pipelines, take --dry-run, return exit codes, and drop into a cron job or a CI step without a session, a token refresh or a browser. You can run it from a laptop with no GUI at all. We do none of that, and any comparison that pretends otherwise is marketing. If your work is shaped like a script, rclone is better than us and it is not close.
If you need storage mounted as a filesystem, use rclone mount, Mountain Duck, or ExpanDrive. We have no FUSE surface. This is not a roadmap item we are being coy about; it is a different product. When your video editor needs to open a file at a byte offset, a browser tab is not in the conversation.
If you need Google Drive, Dropbox, OneDrive or SFTP, use rclone or MultCloud. We connect the S3-compatible family and custom S3 endpoints, and nothing else. CloudFuze covers the enterprise consumer-cloud migration case that we deliberately stay out of.
If your credentials must never leave hardware you control, use rclone, or our IAM-role connect if you are AWS-only. Our encryption is real, but "the keys never left my laptop" is a stronger claim than "the keys are encrypted in our database with per-namespace keys", and it would be dishonest to blur those two. If your compliance posture says secrets stay on your hardware, that posture is correct and rclone fits it and we do not.
If you are one person managing a few buckets and you do not want a subscription, use Cyberduck or S3 Browser. Desktop clients, one-time licence or free, files stay on your machine, and they mount. Better fit than us for that shape of work.
And if everything lives in one cloud and always will, use that provider's console. It is free and it is more current than we are.
So who is left?
You have buckets in three or more providers, you are not going to install anything, and the person who needs to look inside them is not always an engineer. That is the situation where a browser tab across many providers beats every alternative on this page, and it beats it for a boring reason: a support person, a finance person, or whoever is on call at 11pm can open a URL, see every bucket in one list, search across all of them, and check a lifecycle rule without a terminal, a config file, or a credential in their home directory. rclone would do the job. rclone would do it faster if the person already knew rclone. Most of the people who need this do not know rclone, and teaching them is a project you have not scheduled.
That is the whole case. If it is not your case, use one of the tools above, and mean it.