Step 1: Upload your MP4 files using the button above or by drag and drop.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Download your converted HLS files.
MP4 to HLS Conversion FAQ
How do I convert MP4 to HLS?
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Drop your MP4 file onto the upload box (or click to browse), wait a few seconds while PDF.to converts it, and download the resulting HLS file. No account, plugin, or install required.
Is the MP4 to HLS converter free?
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Yes. Basic MP4 to HLS conversions are free for everyone on PDF.to. Paid plans unlock larger files, batch jobs, and priority processing.
Will I lose quality going from MP4 to HLS?
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Quality depends on the format pair. We use the best available encoder for HLS and pass through metadata when the target format supports it. For lossy targets, our defaults aim for the smallest noticeable difference.
What is the maximum MP4 file size I can convert?
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Free users can convert MP4 files up to 100 MB. PRO subscribers can convert files up to 5 GB and run batches in parallel.
Can I batch-convert multiple MP4 files to HLS?
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Yes — drag any number of MP4 files onto the page at once. Free accounts process them sequentially; PRO accounts process them in parallel for faster results.
Does PDF.to keep my MP4 files?
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No. Your MP4 uploads and the resulting HLS files are deleted from our servers within an hour of the job finishing. We do not read, index, or share their contents.
Does the MP4 to HLS converter work on mobile?
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Yes. The whole interface is mobile-responsive and conversions run server-side, so your phone or tablet does not need processing power — just a browser.
Do I need to install anything to convert MP4 to HLS?
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No. Everything happens in your browser. There is nothing to download, install, or update, and no extension to grant permissions to.
How long does a MP4 to HLS conversion take?
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Most MP4 files convert to HLS within a few seconds. Large or complex files (high-resolution video, multi-page documents, many pages) may take up to a minute.
Can I convert MP4 to HLS without an account?
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Yes. You can convert MP4 files to HLS anonymously. Creating a free account just adds conversion history and a larger daily quota.
Which browsers does the MP4 to HLS converter support?
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All modern browsers — Chrome, Firefox, Safari, Edge, and Brave. Internet Explorer is not supported. Mobile Safari and Chrome on Android both work.
What if my HLS download does not start automatically?
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Click the Download HLS button on the results page. If your browser is blocking the download, check the popup-blocker icon in the address bar, or right-click and choose Save link as.