A karaoke recording is not a voice memo with music underneath it. The backing track has to play while you sing, your microphone has to capture only your voice, and the two have to land in the same file, lined up to the same instant, at a balance that flatters both. Get any one of those wrong and the result sounds like a phone held up to a speaker — which, until recently, was exactly how most people made one. Our free Karaoke Recorder is a sing-over-track studio in the browser: you bring the backing track, sing along while it plays, then mix your voice with the music and export one finished MP3 or WAV. No upload, no signup, nothing leaves your device. This guide explains how to record karaoke online with it, the two-minute setup that separates a clean take from a muddy one, and the mistakes that ruin otherwise good performances.
Step one: load the backing, enable the mic. Drop in your instrumental or karaoke backing track — MP3, WAV, OGG or M4A, any instrumental you have the right to use. Then press "Enable microphone" and allow access when your browser asks. Microphone access is requested only when you press that button — never before — and the audio never leaves your device. Put on headphones before you go any further; they are the single most important piece of the setup, and the next section explains why. Step two: sing your take. Press "Start recording": the backing plays and your microphone records at the same instant, so the two are lined up from the same starting tick and there is no sync to repair afterwards. Turn on live monitoring if you want to hear yourself while you perform — headphones only, or you will get feedback. Watch the timer to track the song's length, and press stop when the song ends. Small mistakes do not matter, because you can re-record instantly. Step three: mix and export. Balance the backing against your voice with the volume sliders, preview the mix, then export one finished file. Recording, mixing and encoding all happen locally in your browser — your performance never leaves your device. Export MP3 at 192 kbps for sharing, or WAV if you plan to edit further. Share the file anywhere; it plays on any device.
Most disappointing karaoke recordings fail for the same three reasons: the backing track leaks into the microphone, the room adds echo, or the vocal level swamps the music. A two-minute setup fixes all three. Headphones are non-negotiable. If the backing track plays through speakers, the microphone records it a second time, slightly delayed — that is the washed-out doubling you hear on the export. Wired headphones are best; Bluetooth adds a small delay of its own. Tame the room. Bare walls and hard floors bounce your voice back into the mic. A smaller room with soft furnishings — curtains, a sofa, even a wardrobe of clothes — sounds noticeably drier and more "studio" than a tiled kitchen. Record a ten-second test first. Sing the loudest line of the chorus, play it back, and set the balance with the volume sliders: your voice should sit clearly on top of the track without the loudest notes distorting. Keep a hand-span between you and the microphone, and stay at that distance for the whole take — drifting closer and further is the main cause of uneven volume. Sing full takes. Because the track and your microphone start on the same tick, there is no sync to repair afterwards. Warm up on take one, expect take two or three to be the keeper, and record as many takes as you like — each new recording replaces the last — and only export when you love the performance.
It suits singers rehearsing for auditions, friends recording duets one take at a time, and creators making cover videos for social media — anyone who needs a finished mixed file rather than a rehearsal memo. What it is not: a song library. You bring your own backing track; the tool does not supply songs, and it does not separate vocals from a finished recording. It is also not a multitrack editor: the export is one mixed file, voice and backing already balanced, which is exactly what you want for sharing but means you cannot re-balance the parts later — so preview the mix before you export, and keep the WAV if you think you will want to edit further. Within that scope it does one job completely: a backing track in, a finished song out, with the sync handled by construction rather than by repair. A finished karaoke track deserves an audience-ready finish. The Subtitle Burner bakes the lyrics or captions permanently into the video for a sing-along clip, and the Voice-Over Ducking Mixer balances voice against backing music automatically — the same ducking trick radio producers use. If the audio drifts out of sync in a video you are working from, fix it first with our Audio Sync Fix tool before you sing over it.
Singing through speakers instead of headphones. The backing leaks into the mic a second time, slightly delayed, and no slider fixes that washed-out doubling afterwards. Drifting closer and further from the mic. Distance is volume — a hand-span, held steady for the whole take, is what keeps the vocal level even. Skipping the ten-second test. One loud chorus line, played back, tells you the balance before you have sung the whole song wrong. Recording in an echoey room. A tiled kitchen flatters nobody; a small room with curtains and a sofa sounds like a studio by comparison. Exporting before previewing the mix. The export is one mixed file — listen to the preview, adjust the sliders, and only then export. Using a finished song as the "backing". The tool mixes your voice over whatever you load; if the track already has vocals, you will be singing a duet with the original singer.
The honest limits are three. First, you supply the backing track — MP3, WAV, OGG or M4A — the tool has no built-in song library, so use instrumentals you have the right to sing over. Second, microphone access is required, and the browser will ask for it; the recording never leaves your device, but a browser that blocks mic access cannot record at all. Third, the export is a single mixed MP3 or WAV, not separate vocal and music stems — the balance is set with the sliders before export, so the preview step is part of the workflow, not an optional extra. Within those limits, the tool does one job completely: it turns a backing track and a microphone into a finished karaoke recording, in sync by construction, for free, without a single upload. The companion guides are our voice recording guide, for mic setup, trimming and clean WAV downloads, our subtitle burning guide, for baking lyrics permanently into the video, and our audio sync guide, for matching lips to words when the source video drifts.
Mic setup, trimming and clean WAV downloads — the room matters more than the microphone.
Bake the lyrics permanently into the video for a sing-along clip that works everywhere.
Match lips to words before you sing over a drifting video — 50 ms steps, A/B test, export.