What Is Sendbig and How Do You Send Large Files Up to 30GB for Free?
Sendbig is a web-based file transfer service for sending large files, photos, and videos — up to 30GB per transfer — without paying. You upload from a browser, then share the transfer by email or a shareable link. It's a reasonable fit if you regularly hit the size limits of email attachments or free tiers on other transfer tools, and it's a particularly good fit if your uploads tend to get interrupted, because Sendbig supports resumable uploads.
What Sendbig actually does
The core job is simple: get a big file from your computer to someone else's without a shared drive, a USB stick, or a paid plan. According to the site, you can share large files, photos, and videos up to 30GB for free, and distribute them via email, a shareable link, a blog, or social media.
That puts it in the same general category as WeTransfer and Dropbox-style sharing, but the headline number — 30GB free — is the main differentiator the service promotes.
How to send a file
- Open sendbig.com and choose a file, or drag and drop it onto the upload area.
- Add more files or folders if you need to send several items in one transfer. The upload card shows a running total (for example, "5.00GB Total") so you can see how close you are to the limit.
- Enter your email and the recipient's email, and optionally add a message.
- Move to the next step to configure the transfer — this is where expiry and protection options live.
- Start the upload. When it finishes, the recipient gets the email, or you copy the shareable link and post it wherever you need.
The site also notes a "Want longer expiry date, Try LimeWire" prompt, which suggests the default expiry is on the shorter side and longer retention is tied to another product. If expiry length matters to you, check the options on the transfer screen before uploading.
Resumable uploads: the feature that matters most
This is Sendbig's strongest practical argument. The site describes it as a free PRO feature: you can start an upload today, shut down your PC, and resume it tomorrow. If your connection drops or your battery dies mid-transfer, you don't start over.
How it works in practice:
- Log in before uploading. Incomplete uploads are retrieved and shown first inside the upload card the next time you visit while logged in.
- For each incomplete upload, you re-select the matching file on your computer and click resume.
- The upload continues from where it stopped rather than from zero.
The catch is the login requirement — resumable uploads depend on the service knowing who you are, so an anonymous upload won't get this treatment. If you're sending anything large over a flaky connection, log in first.
Security and privacy
Sendbig states that security is a priority and describes several concrete measures:
| Feature | What the site says |
|---|---|
| Encryption in transit and at rest | AES (Advanced Encryption Standard), 256-bit |
| Transfer protection | SSL/TLS protocol |
| Server certification | ISO 27001 |
| Optional extra protection | Password protection on the transfer (password known only to you) |
| Access controls | Choose an expiry date and/or a maximum number of downloads |
| Retention | Files are automatically deleted from servers once the transfer expires |
| Support | 24/7 dedicated support team |
Two of these are worth acting on rather than just reading. First, the password option is described as end-to-end encryption added on top of the standard encryption — if you're sending anything sensitive, set it and share the password through a separate channel. Second, the download cap plus expiry date together give you a way to limit exposure: a transfer that expires in a day and allows three downloads is much harder to leak than one that lives indefinitely.
When Sendbig is the right choice — and when it isn't
Choose Sendbig if:
- Your file is large (up to 30GB) and you don't want to pay.
- Your upload might get interrupted and you want to resume rather than restart.
- You want password protection and download limits without a subscription.
- You want to distribute one file to many people via a link, blog, or social post.
Look elsewhere if:
- You need files to stay available long-term — Sendbig deletes them at expiry, so it's a transfer tool, not storage.
- You need collaboration features like shared folders, versioning, or comments. That's a cloud storage product's job, not a transfer service's.
- You can't or won't create an account, and resumable uploads matter to you.
FAQ
Is Sendbig really free? The site advertises sharing large files up to 30GB for free. It also references a "Get PRO for Free" promotion and a separate LimeWire option for longer expiry dates. Pricing details beyond these signals aren't specified on the page, so treat the free tier as the documented baseline and check the site for current plan terms.
What can I send? Files, photos, and videos, including multiple files or whole folders in a single transfer.
Do recipients need an account? The site describes delivery by email, shareable link, blog, or social media, which implies recipients just open what they're given. It doesn't state an account requirement for downloading.
What happens to my files afterward? They're automatically deleted from the servers once the transfer expires. If you set a maximum download count, access also ends when that's reached.