Blog
Practical guides on sending large files, peer-to-peer transfers, privacy, and getting the most out of BoltShare.
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The Best Free Ways to Send Large Files in 2026
Every free way to send a large file, compared honestly: live transfer tools, upload services, cloud drives and local tools. Size limits, waits and which to pick.
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How to Check a Big File Arrived Intact (Checksums in 2 Minutes)
A checksum tells you whether a file on the other end is byte-for-byte identical to yours. How to make one on Windows, Mac and Linux, no extra software needed.
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Delivering RAW Photos to Clients and Editors Without the Headaches
A full shoot of RAW files can easily top 50 GB. A practical workflow for photographers sending RAWs to clients, retouchers and second shooters.
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Direct P2P vs Bolt Tunnel: How BoltShare Moves Your Files
BoltShare has two transfer modes. Here's what happens to your file in each, when to pick which, and why neither one stores your data.
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Email Attachment Size Limits, and Why 25 MB Is Really 18
Gmail, Outlook and Yahoo all cap attachments, and the real limit is lower than the number they advertise. Here's why, and what to do instead.
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How to Send a Whole Folder Without Losing Its Structure
Most file transfer tools flatten folders into a pile of files. How to send a folder with its subfolders intact, on Windows and Mac, and when to skip zipping.
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How to Get Photos and Videos From an iPhone to a Windows PC
AirDrop doesn't work with Windows. The ways to move photos and long videos from an iPhone to a PC, including over Wi-Fi with no cable, app or iCloud.
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Keeping a Long Transfer Alive on Phones and Laptops
Sleep settings, background tabs and battery savers are the most common reason big transfers stop. How to keep the sending device awake on Windows, Mac, Android and iPhone.
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Fixed: Multi-File Transfers Stopping After the First File
Sending several files at once used to stall after the first one. Here's what was going wrong, and why batches now arrive as a single ZIP.
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Sending Raw Video Footage to an Editor: Sizes, Formats and Tips
How big video footage really is, whether to send proxies or originals, and how to get hundreds of gigabytes to an editor without shipping a hard drive.
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Stuck on "Connecting"? Why Some Networks Block Direct Transfers
Office firewalls, school Wi-Fi, mobile carriers and VPNs can stop two devices from connecting directly. What's happening and how to get the file through anyway.
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Upload Services vs Direct Transfers: Which Is Right for You?
WeTransfer-style services and direct peer-to-peer tools solve the same problem in opposite ways. An honest look at when each one is better, including when it isn't us.
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Your Upload Speed Decides How Long a Transfer Takes
Your internet plan advertises download speed, but sending files depends on upload, which is often 10x slower. How to work out how long a transfer will really take.
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"Encrypted" File Transfer: What It Does and Doesn't Mean
In transit, at rest, end-to-end: file sharing sites throw these words around. What each one protects you from, what it doesn't, and how to add your own layer.
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What Is WebRTC? A Plain-English Explanation
WebRTC is how your browser makes video calls and direct file transfers without plugins. How it finds the other device, punches through routers, and keeps the data private.
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Why BoltShare Shows Ads (and What They Can't See)
BoltShare is free and has no accounts, but the servers aren't. Here's why we added ads, what they track, and what they never get near.
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Why Is My File Transfer Slow? A Checklist That Actually Helps
Things to check when a large file transfer crawls, in the order we'd check them ourselves, from Wi-Fi bands to VPNs to background tabs.