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Frequently asked questions
Everything people ask about MP4 Downloader — cost, privacy, limits, formats and what to do when something fails.
Is MP4 Downloader really free?
Yes — every tool on MP4 Downloader is completely free. The site is supported by ads: a short ad plays before a download or conversion starts, and that is what pays the server bills. No subscriptions, no credits, no "premium" tier unlocking basic tools.
Do I need to sign up or install anything?
No account, no app, no browser extension. Everything runs in your browser session — any modern phone, tablet or computer works, and there is nothing to create an account for.
Do you store my files?
No. Uploads are processed in a temporary folder on the server and deleted the moment your download finishes. Downloads are fetched and streamed to you on the fly. We never keep, view or share copies of your files.
What is the upload size limit?
200 MB per file — far above the 10–25 MB caps most free converters impose. If a file is bigger, compress or trim it first with the tools here, then run your main job.
Why is there a short ad before my download or conversion?
Server time, bandwidth and the conversion engines cost real money. One short ad per action keeps every tool free for everyone, with no accounts and no paywalls.
Will my results have a watermark?
Never. What you download is the clean finished file — no watermark, no logo stamp, no "made with" credit burned in.
Which sites can I download from?
YouTube, TikTok, Instagram, X (Twitter), Facebook, Vimeo, Reddit, Twitch, Dailymotion, Pinterest, SoundCloud and 1,000+ more through the same engine. Public posts work best — private or login-only posts usually cannot be fetched by any downloader.
Is it legal to download videos or music?
Only download or convert content you own, that is public domain, or that you have the rights or permission to use. The tools are for personal, lawful use — respect creators and copyright.
What can I convert here?
MP4 Downloader converts video (MP4, WEBM, MOV, MKV and GIF) — plus editing tools like trim, speed, reverse, compress and more, all listed on the homepage. Pick a file, pick a format, done.
Why did my link or conversion fail?
The usual causes: the post is private, age-gated or login-only; the file is over 200 MB; the file itself is corrupt or in a rare format; or the source site is rate-limiting. Re-copy the share link from the finished post, or try a smaller/different file. The docs page has a full troubleshooting list.
Does MP4 Downloader work on my phone?
Yes — the whole site is built for mobile first. It is also an installable web app: on Android, Chrome offers an install prompt; on iPhone, use Share → Add to Home Screen.
More detail lives in the docs — formats, limits, privacy and troubleshooting — and the guides walk through the popular jobs step by step.