FLAC to WEBA Converter
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Supports: FLAC
Advanced Options - Our defaults are optimized for the best results. We recommend you keeping the defaults unless you have a specific need.
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FLAC keeps every bit of the original recording, which is why a lossless library eats disk space fast. Converting FLAC to WEBA — the audio-only variant of Google's WebM container, carrying an Opus stream by default — trades that lossless master for a file that is typically 5–10× smaller while staying close to transparent for most listeners. It is the right move for HTML5 <audio> embedding, sharing clips, and shrinking a lossless collection for portable listening — just keep the FLAC original as your master, because this step permanently discards data.
How to Convert FLAC to WEBA
- Upload Your FLAC File: Drag and drop or click "+ Add Files" to select FLAC files from your computer. Batch upload is supported — queue several files and convert them in one pass with the same settings.
- Pick a Quality Preset or Set a Bitrate: Default is Highest. Leave it on Highest or Very High for music (roughly 128–192 kbps Opus, near-transparent), or open File Compression and switch to Custom Bitrate, Constant Bitrate, or Specific file size to target an exact rate or output size. For voice and podcasts, 64–96 kbps is plenty.
- Set Audio Channel, Sample Rate, or Trim (Optional): Keep Audio Channel and Audio Sample Rate on Original to mirror the FLAC source, or downmix to Mono and resample to shrink files further. Use Trim to clip a start time and duration.
- Convert and Download: Click Convert. Files are processed on our servers and the WEBA downloads directly — no sign-up, no watermark.
FLAC vs WEBA — Format Comparison
| Property | FLAC | WEBA |
|---|---|---|
| Full name | Free Lossless Audio Codec | Audio-only WebM (Matroska subset) |
| Compression | Lossless | Lossy, perceptually optimized |
| Audio codec | FLAC | Opus (default) or Vorbis |
| Typical bitrate (CD-quality stereo) | ~700–1,000 kbps | 64–192 kbps for music, 24–48 kbps for speech |
| File size (5 min, CD-quality) | ~25–35 MB | ~4–7 MB at 128 kbps Opus |
| Quality vs source | Bit-perfect | Very close at 128 kbps+, not identical |
| Browser playback | Chrome, Firefox, Edge; not Safari natively | Chrome, Firefox, Edge, Opera; Safari historically unreliable on Opus |
| License | Open, royalty-free (Xiph) | Open, royalty-free (WebM + Opus) |
| Best for | Archiving, mastering, editing | Web delivery, sharing, portable listening |
Frequently Asked Questions
Will I lose quality converting FLAC to WEBA?
Yes — this is a lossless-to-lossy transcode, so quality is permanently reduced and you cannot get the original detail back later. That said, the loss is small in practice: Opus reaches what Xiph (the codec's authors) describes as "pretty much transparent" at 128 kbps stereo, and most listeners can't tell 128–192 kbps Opus from the source in blind tests. Keep the FLAC file as your master and treat the WEBA as a delivery or listening copy.
Does this tool output Opus or Vorbis inside the WEBA?
Opus by default. The audio-only WebM container can carry either Opus or Vorbis, and Opus is the modern default because it beats Vorbis at every bitrate from about 6 kbps up to its ceiling. If you specifically need Vorbis for an older WebM toolchain, you can select it under Audio Codec in the advanced options — but for almost every use, leave it on Opus.
What bitrate should I choose for music versus voice?
For stereo music, 128 kbps Opus is the transparency sweet spot and 160–192 kbps gives extra headroom; Xiph recommends 96–128 kbps for music storage. For podcasts and talk, 64–96 kbps stereo is plenty, and pure voice can drop to Mono at 32–48 kbps and still sound clean. In our testing, a 4-minute CD-quality FLAC re-encoded at 128 kbps Opus landed around 3.7 MB, down from roughly 28 MB.
Will the WEBA play on iPhone and in Safari?
Treat it as not guaranteed on Apple. Safari added WebM container support fairly late — full support arrived in desktop Safari 16 and iOS Safari 17.4 — and Opus-in-WebM playback has been unreliable on Apple platforms historically. Chrome, Firefox, Edge, and Opera play WEBA without issues on every platform. If your audience leans heavily Apple, convert to M4A (AAC) for first-class Safari and iOS playback instead.
How is this different from FLAC to Opus or FLAC to OGG?
It is the same Opus audio in a different wrapper. FLAC to Opus gives you a raw .opus file, and FLAC to OGG puts the codec in an Ogg container; WEBA uses the WebM container, which is what browsers and the YouTube/Chrome ecosystem prefer for web audio. Pick WEBA for web embedding, .opus/Ogg for general audio players, and FLAC to MP3 when you need maximum device compatibility.
How are my files handled, and how long do you keep them?
Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically a few hours after conversion — no sign-up, no watermark, never shared or made public. If you need the lossless original back, decode the WEBA with WEBA to FLAC; note that re-encoding lossy audio to FLAC does not restore the discarded data — it only rewraps it losslessly at the WEBA's fidelity.