Free Online File Converter
Your Files Stay Yours — free, private file conversion, no sign-up needed
How It Works
Document Conversion
Image Conversion
Developer Tools
Why Sign-in?
Every tool works without an account — sign in and it remembers your work across visits:
Save your go-to tools and jump straight to them next time.
See what you converted — the tool, size and date, never the files themselves.
Your JPEG quality, PDF compression and theme, remembered on every device.
Every tool's file-size limit doubles when you're signed in.
See It In Action
A real conversion, start to finish — watch exactly what happens to your file.
DOCX to PDF Converter
Securely uploaded, converted, and deleted immediately.
From the Blog
Frequently Asked Questions
Is FileCast actually free?
Yes. Every tool is free to use, with no hidden tiers, no "free trial" period, and no credit card required at any point. FileCast is supported by on-page advertising rather than by putting basic conversions behind a paywall, so there's no artificial cap designed to push you toward a paid plan — there is no paid plan.
Do you upload my file to a server?
For most tools, no. The majority of FileCast's converters — image, PDF, and text tools included — run entirely inside your browser using JavaScript, so your file never leaves your device. A small number of tools that need more processing power than a browser can offer are labeled "Cloud" instead of "Local" on their tool page; those do send your file to our server for the conversion, but it's deleted immediately afterward. Check the badge at the top of any tool page to see exactly which mode that tool uses.
Do I need to create an account?
No. Every tool works fully without signing in — no email, no password, nothing to set up first. Creating a free account is optional and only unlocks a few conveniences: your favorite tools stay pinned, your last 30 days of conversions are listed (never the files themselves), your preferred settings are remembered across devices, and every tool's file-size limit doubles.
Is there a file size limit?
Yes, and it's listed directly above the upload box on each tool's page — most browser-based tools sit in the tens-of-megabytes range, since that processing happens on your own device's hardware rather than a server. Signing in with a free account doubles whatever limit a tool normally has.
What happens to my file after I convert it?
It depends on the tool's processing mode. For the browser-based ("Local") tools — most of them — nothing happens to your file anywhere else, because it was never sent anywhere: it exists only in your browser's memory for the length of the conversion and is gone once you close or navigate away from the tab. For the small number of server-based ("Cloud") tools, the uploaded file is converted and then deleted from our server immediately — there's no multi-day retention window, just an upload, a conversion, and a deletion.
Do you use my files to train AI models?
No. FileCast doesn't look at, store, or retain file content — for browser-based ("Local") tools, your file never leaves your device in the first place, and for the handful of server-side ("Cloud") tools it's deleted immediately after conversion. There's no file content sitting anywhere that could be used to train a model, sold, or shared with anyone. See our Privacy Policy for exactly what is and isn't collected.
Does FileCast work on mobile, and which browsers are supported?
Yes — every tool works the same on a phone as it does on desktop, since FileCast is a website, not an app; there's nothing to install. Local (in-browser) tools rely on WebAssembly, which every modern browser released in the last several years supports — Chrome, Firefox, Safari, Edge, and their mobile equivalents. If a tool ever fails to load properly, it's almost always an outdated browser rather than something wrong with your file.
What do the green and blue badges mean?
Every tool page carries one of two badges near the top, showing how that tool actually processes your file. Green ("Local") means the conversion runs entirely in your browser — your file is never uploaded anywhere. Blue ("Cloud") means the file is uploaded to our server for processing, then deleted immediately afterward.