SongFX

Speed it up, slow it down, spin it in 8D, add bass or a mood — and download the finished track.

1Upload a track or video
Drop a track hereTap to choose a track
or click to choose MP3, WAV, FLAC or MP4 video up to 5 minutes
3Listen and adjust
Live spectrum Processing
2Pick an effect
0:000:00
as isa bitstandardslow
Upload a track and the chosen effect plays right away
4Download

How to use SongFX

SongFX is a free online song effects editor: slowed + reverb, nightcore and sped up, 8D audio, bass boost, a retro sound, atmosphere and an equalizer. It all runs right in your browser, on a computer or a phone, with nothing to install and no sign-up.

  1. 1

    Add a track

    Tap the upload area or drop a file on it: MP3, WAV, FLAC, M4A or an MP4 video up to 5 minutes long. From a video, the sound is used.

  2. 2

    Pick an effect

    Each tab is a separate effect. The presets at the top work in one tap, the sliders below fine-tune it.

  3. 3

    Listen and adjust

    Press play: every change is heard instantly, no waiting. The Original button lets you compare with the source.

  4. 4

    Download

    Download saves the whole processed track in the same format as your file. AAC, M4A, OGG and video sound are saved as MP3 320.

Effects and sliders

Slowed + Reverb slower, with echo

A slower, deeper version of the song with the echo of a big hall: the sound popular on TikTok and YouTube.

  • Speed how much to slow the track down: ×0.85 is the classic slowed, ×0.80 is even slower. Tempo and pitch go down together, like on a record.
  • Reverb how much echo to add: 0 % is none, close to 100 % is a huge hall.

Nightcore / Sped Up faster and higher

A faster, higher version of the song: nightcore and TikTok sped up.

  • Speed how much faster: ×1.15 is the usual sped up, ×1.25–1.35 is classic nightcore. Tempo and pitch go up together.

BASSify heavy bass made for the track

Adds a deep sub-bass tuned to your track: SongFX finds where the song’s bass sits and boosts exactly that. The volume is matched, so you hear more bass, not just a louder song.

  • Profile soft, punchy or massive: how much bass to add.
  • Bass amount the sub boost in decibels, to fine-tune the profile.
  • Sub frequency where the boost is centred: lower is rumble and vibration, higher is a tight kick drum.

8D sound circles your head

The sound circles slowly around your head, like in “8D audio”. Listen on headphones: on speakers the effect is barely there.

  • One circle in how many seconds one full circle takes: 12 s is gentle, 4 s is fast.
  • Room how much space around: more makes the sound feel like it moves through a room.

Vibe mood and atmosphere

Adds atmosphere without breaking the track itself: echo, shimmer, stereo width and tone.

  • Mood dream is an airy echo with an octave-up shimmer; night is a warm, mellow sound; hall is the reflections of a live concert hall; sun is a bright, wide sound.
  • Intensity how strongly to apply the chosen mood.

EQ shape your tone

A five-band equalizer for your own tone, with presets: bass, voice, bright, soft.

  • Bands each slider raises or lowers its band by up to 12 dB: bass, warmth, voice, clarity and air. The hint under each name tells you what lives in that band.

Retro warm old tape

The sound of old tape or vinyl: softened highs, warm saturation, a slight pitch wobble, crackle and a small room.

  • Intensity one slider drives it all: light is a barely noticeable vintage touch, strong sounds like an old cassette.

The volume slider on a computer changes only the listening level and does not affect the downloaded file.

FAQ

Is it free?

Yes, completely free, with no sign-up and no watermarks.

Are my tracks uploaded anywhere?

No. All processing happens right in the browser on your device. Files are never sent to our or anyone else’s server: we never see or store them.

Which formats are supported?

MP3, WAV and FLAC, plus M4A (AAC), OGG and MP4 video if your browser can open them. The result is saved in the format of your file; formats the browser cannot write are saved as MP3 320.

Why only up to 5 minutes?

Processing happens on your device and uses its memory. Five minutes covers almost any song without overloading a phone.

Why does saving take a while?

On download, the whole track goes through the effect again and is encoded to the right format. On a computer that takes a few seconds, on a phone about 10–30 seconds for a three-minute song.

Will the track get quieter or distorted?

SongFX matches the loudness of the result to the original and gently smooths the loudest peaks, so there is no distortion. With echo and in 8D the track can be a little quieter than the original: that keeps the sound clean.

How do I make slowed + reverb?

Open the Slowed + Reverb tab, pick “standard” (×0.85) and raise the reverb to 40–60 %. Listen, then press Download.

How do I make nightcore or sped up?

Open the Nightcore / Sped Up tab and pick a speed: ×1.15 is the usual TikTok sped up, ×1.25–1.35 is classic nightcore.

Do I need headphones for 8D?

Yes. In 8D the sound moves from one ear to the other; on speakers or a phone speaker you can barely hear it.

Does it work on a phone?

Yes, on iPhone and Android in Safari, Chrome and other modern browsers. Saving takes longer on a phone than on a computer.