Finds what needs attention
Reads loudness, dynamics, tonal balance, and stereo risk, then sets a smarter starting point.Intelligent analysis · auto-configuration
Free Online Audio Mastering.
Release-Ready in Minutes.
Finish your track. Nothing leaves this device.
Drop in your mix and download a mastered WAV or MP3 with no upload, account, or watermark. Your audio is processed privately in your browser.
- Audio stays on your device
- 6,800+ tracks mastered
- Free WAV + MP3
- No sign-up required
Built by a DJ & producer ·Track-specific mastering ·Hear the difference free
Audio or video files only.
Videos are one track at a time — using the first.
Free plan
Pick up where you left off
Welcome to the Gleam
What do you want to make?
Change
Your track comes with you — nothing leaves your device.
Master it
Release-ready loudness and tone. Free WAV or MP3.
Stays right here
Make a video
Turn your track into a video for Reels, TikTok and Shorts.
Opens the Music Visualizer
Make a Spotify Canvas
A beat-matched loop for the art slot, timed to your bars.
Opens the Canvas Maker
1 · Finish the song
2 · Get it out there
Only the video plays your audio, so master first. Canvas and cover art work any time.
then
Vocal and beat in separate files?
Mix vocals over a beat
Line your vocal up on the beat and set the levels. Then master the mix.
Add the other file
Opens the vocal mixer
Drop the other file here
Vocal and beat in separate files? Mix them first
Best after mastering
Master first, then video
Already mastered? Use it as is
The video plays your audio, so it sounds best mastered.
It’s already mastered
Any time · reads the tempo only
Any time · no audio needed
Make cover art
Square cover art with your song title and artist name on it.
Downloads as a 3000×3000 PNG
{n} files. One song, or separate songs?
Vocal + beat — mix them
Parts of one song — mix them
Opens the mixer with both files. Master the mix after.
Opens the mixer with all {n} files. Master the mix after.
Separate songs — master each
Masters them one after another.
Phones can mix up to 4 files at a time — the first 4 go to the mixer.
Too much audio to mix at once on this device — the first {k} go to the mixer.This device can mix up to {k} files at a time — the first {k} go to the mixer.
Mix
Master
Video
Canvas
Cover
Next: make the video
WORKSPACE
Leave your fine-tunes behind?
Your fine-tunes live in this tab only.
If you leave, your Advanced changes are cleared and the track starts again from TrackGleam’s own settings.
Drag a file here or press Enter to browse. WAV, MP3, FLAC, M4A — or a video (MP4, MOV, WebM); we master its audio track. Your file is processed on your device; nothing is uploaded.
Drop your track to master it free
Your audio stays on this device. Choose one track — or a whole release at once.
Choose My Track
WAVMP3FLACM4AVideo
or
100% Private · No Upload · No Sign-Up · No Watermark
Processing...
📱 Keep this tab open — phones pause the render if you switch away or lock the screen
Support TrackGleam
Optional tip to help keep TrackGleam free
Inside the Gleam Engine60+ measurements · 25-band corrective EQ · 14 stages · verified loudness — and why the free master is really free.
Built by someone who makes music too
TrackGleam was created by a DJ and producer who wanted a better way to finish his own tracks. What started as a personal mastering project became an adaptive engine built around the problems producers actually hear — muddy lows, harsh highs, crushed dynamics, tracks that don't feel finished. Producer-built. Track-specific. Ready to release.
How to master a song online free
Three steps, no sign-up — free AI audio mastering that runs entirely on your device.
- Upload privatelyAnalysis runs in your browser — your file never leaves this device.
- Compare the resultHear the original and free master at matched volume.
- Download or hear AIKeep the free master, or compare the optional AI version.
How TrackGleam masters your music
TrackGleam is a free browser-based audio mastering tool: your MP3, WAV, FLAC or M4A is mastered on your own device — nothing uploads, no account, no watermark — through a 14-stage chain targeting release-competitive loudness.
Not a one-size preset — a measured, verified loop that runs entirely on your device. Tap a step:
Loudness, true peak, dynamics, a 25-band tonal spectrum, stereo width, and artifact patterns — measured right in the browser. Your file never uploads; only the numbers behind an optional AI version are ever sent anywhere.
Your 25-band tonal spectrum is compared against reference curves measured from thousands of released masters in your genre — a lo-fi beat and a metal mix are never pushed toward the same curve — and the engine writes a corrective EQ for exactly the gap it measured.
The AI reads the gap and writes a mastering recipe for your song, with a plain-English reason for every move — that's the “What Auto heard and did” box beside the player. On the paid tier you choose the direction — five AI engineers covering punch, warmth, space, energy and transparency each write their own recipe, and every one previews free.
Then it does what a mastering engineer does: it checks its own work. The engine re-measures the master it just made and corrects — a closed loop that repeats until tonal balance and loudness lock in. That's the Gleam Engine V5: a 14-stage chain, tuned to what your track actually needs.
🎯 Reference Mastering — matched to the song you pick
Drop in the exact commercial track you want to sound like: the engine measures its tonal signature and matches it with a linear-phase filter, with the correction clamped so nothing runs away. Your reference, your call — and you can hear the match against the original.
Measured, not magic. Every number the engine shows is real and yours to verify — run the finished master through any LUFS meter and the readings match. No black box, no mystery dataset.
The complete 14-stage chain
ToneDynamicsColor & SpaceDelivery
- Input ConditioningGain staging, DC removal and a sub-sonic high-pass, so every later stage sees a clean signal.
- 8-Band Parametric EQEight bands of tonal shaping — the measured 25-band corrective EQ rides this same stage.
- Dynamic EQCuts mud, boxiness and sibilance only when they appear.
- Multiband CompressionControls lows, mids and highs separately, so one band never squashes the rest.
- Upward DensityLifts quiet passages toward the loud ones without touching the peaks.
- Parallel GlueBlends a compressed copy back in for density without pumping.
- Mid/Side EQShapes the centre and the sides of the stereo image separately.
- Transient ShapingRestores the attack and punch that compression softened.
- De-HarshTames brittle upper-mids only when they turn harsh.
- Multiband SaturationTape-style lows, warm mids and bright air, each band on its own curve.
- Harmonic ExciterA gentle soft-clip stage that adds harmonics and sheen to the top end.
- Stereo ImagingWidens the highs, keeps the bass mono-safe below a crossover, balances mid and side.
- Brickwall LimiterLook-ahead true-peak limiting to release-competitive loudness under a −1.0 dBTP ceiling.
- TPDF DitheringHigh-passed TPDF dither at the final 16-bit quantizer; 24-bit masters ship undithered.
Every stage is configured automatically for your specific track — right in your browser.
What TrackGleam improves
Controls harshness and mud
Tames brittle highs, boxy mids, and low-end buildup so the track reads clearly on any system.25-band corrective EQ · 8-band + dynamic EQ · de-ess · de-harsh
Balances loudness and dynamics
Brings the track to release-competitive loudness under a -1.0 dBTP true-peak ceiling while keeping punch and breathing room.Multiband + glue compression · brickwall limiter
Protects stereo and peak safety
Keeps bass mono-safe and holds a true-peak ceiling so playback and format conversion stay clean.Stereo imaging · bass mono-sum · −1.0 dBTP
What leaves your device?
Your audio file stays on this device from analysis through download.
- Audio fileNever uploaded
- Free masteringProcessed locally
- Optional AI versionNumeric measurements only
- AnalyticsPage interactions only, never audio
How the Free Tiers Actually Compare
Looking for a free LANDR alternative? TrackGleam masters your song in the browser at no cost, with no account and no upload — unlike LANDR, Waves, and eMastered, which gate downloads behind subscriptions or per-track fees. You get a watermark-free, release-ready master (about −11 LUFS at a −1.0 dBTP ceiling; Low intensity gives a −14 streaming-safe take) to download instantly, plus an optional $1.99 + tax AI master.
Checked July 2026 — full details on the LANDR comparison and alternatives roundup pages.
Choose your AI mastering engineer. GleamAI masters come in five directions — Knox (punch), Ember (warmth), Wyla (space), Maxx (energy), True (transparency). Each analyzes your track’s measurements and adapts; auto-pick recommends one and explains why. Meet the engineers →
Fictional TrackGleam characters — creative mastering directions, not real people or endorsements.
| Tool | Free download | One master costs | Signup | Your audio uploads |
|---|---|---|---|---|
| TrackGleam | Yes — WAV/MP3, no watermark | $0 free · optional AI $1.99 + tax once | No | Never — processed on your device |
| LANDR | No — preview only | $10 | Yes | Yes |
| Waves Online | No — 30-sec preview | $3.99 ("$1.99 + tax" needs a $71.64/yr plan) | Yes | Yes |
| eMastered | No — preview only | $49/mo subscription (monthly) | Yes | Yes |
| BandLab | Yes — 16-bit | Free | Yes | Yes |
LANDR, Waves, eMastered, BandLab and other product names are trademarks of their respective owners. TrackGleam is not affiliated with or endorsed by them. Comparisons reflect publicly available information checked July 2026.
FAQ
Is the free master good enough to release?
Yes. Nothing is held back.
The free master runs the same Gleam chain — you export the whole song as a full-precision 24-bit WAV, no watermark, and you can master as many songs as you like. Your report names the stages engaged for your track. GleamAI is not a higher grade of the same master — it is a different set of decisions about your song, made from 60+ measurements of your track, plus four processors it can reach for when your measurements call for them; anything that measures worse is reverted to your free master. Gleam corrects your track. GleamAI makes decisions about it.
Does TrackGleam upload my audio?
No. Your audio file is decoded and processed inside your browser, on your own device — it is never uploaded to a server. For the optional AI version, only numeric measurements (loudness, tone balance, stereo profile) are sent; the audio itself never leaves your device.
Can I master a song online for free?
Yes — you can master a song online for free with TrackGleam: drop in a WAV, MP3, FLAC or M4A and download the finished master as a WAV or MP3, with no signup and no watermark. The free master is a real download — full WAV, not a 30-second preview or a paywalled render.
What loudness does TrackGleam target?
Auto mode targets release-competitive loudness — about -11 LUFS integrated, with genre styles ranging from -9 LUFS (EDM, hip-hop, metal) to -15 LUFS (classical). The automatic and AI presets hold a -1.0 dBTP true-peak ceiling; in DIY mode the ceiling is yours to set. That is deliberately more conservative than chart practice: iZotope's 2024 survey of 54 Billboard Global 200 top-10s measured an average of -8.3 LUFS, and streaming platforms simply turn louder masters down on playback. Prefer the traditional streaming-safe master? The Low intensity targets -14 LUFS.
Can I use the result on Spotify or Apple Music?
Yes. The automatic and AI presets keep a -1.0 dBTP true-peak ceiling (in DIY mode you set the ceiling yourself), and Spotify, Apple Music, YouTube, Tidal, and Amazon Music normalize loudness on playback — a competitive master is simply played at the platform's level, exactly like commercial releases are. Want a master that needs no turning down at all? The Low intensity targets -14 LUFS, close to Apple Music's -16 reference.
What does the optional GleamAI master change?
GleamAI, TrackGleam's optional paid tier ($1.99 + tax per track), makes track-specific EQ, compression, loudness, and stereo decisions on top of your free Gleam master. It is a different take, not automatically better — you can preview the full result free, then pay $1.99 + tax once to remove the watermark and download. The free master is always yours to keep.
Can TrackGleam improve Suno or Udio tracks?
Often, yes. The AI Fix presets can reduce the metallic shimmer, brittle highs, harsh upper-mids, and unstable stereo common in AI-generated music using subtractive EQ, tighter high-band control, and safer stereo handling. They cannot fully reconstruct audio that is already damaged.
Which formats are supported?
TrackGleam accepts MP3, WAV, FLAC and M4A files as input — or a video (MP4, MOV, WebM; it masters the audio track) — and exports your master as a WAV (16, 24, or 32-bit float) or an MP3 at 320 kbps.
How does TrackGleam compare with LANDR?
Same job, a different deal. As of July 2026, LANDR's free tier is a preview you cannot download, its cheapest single download is $10, and every master uploads your audio to its servers. TrackGleam's free master is a real watermark-free WAV with no account, processed entirely in your browser.
Who are the GleamAI mastering engineers?
Knox Kicker, Ember Loam, Wyla Span, Maxx Voltage and True Morrow are fictional TrackGleam characters — five creative mastering directions, not real people or endorsements. Each analyzes your track's measurements and adapts its moves to what the track actually needs. Every engineer's master previews free in your browser.
Featured learning guides
Short, original notes on getting a better master. Browse all guides →
Streaming loudness in plain English
Most streaming services turn loud songs down. That means a master that is simply louder is not automatically better. In practice, a controlled, clean, balanced master often survives normalization better than an over-limited one.
- Use the Low intensity when you want the classic -14 LUFS streaming-safe target; Auto targets release-competitive loudness.
- Use louder genre presets when you want more density and energy.
- Watch true peak and harshness, not just overall loudness.
What AI cleanup can and cannot do
TrackGleam can often reduce brittle highs, unstable stereo, and metallic shimmer, but it cannot fully reconstruct damaged transients or replace a bad generation with a perfect recording. Think of AI Fix as artifact taming, not full restoration.
Why mono bass matters
Very wide bass can collapse badly on phones, club systems, or mono playback. TrackGleam can mono-sum the lows below a chosen point so the center stays punchy and more translation-friendly.
Why some masters look smaller after processing
A processed waveform is not always visually bigger. Corrective EQ, trimmed silence, safer true-peak control, and preserved dynamics can produce a waveform that looks less inflated while sounding more polished and more portable across playback systems.
How to prepare a mix before you master it
A mastering tool works best on a balanced mix with enough headroom. If your kick is distorting, your vocal is buried, or your stereo image is unstable, mastering can only polish those problems, not fully undo them. For best results, export a clean stereo mix, avoid clipping on the mix bus, leave obvious corrective moves to the mix stage, and use mastering for final tone, loudness, width, and delivery.
1. Leave headroom
TrackGleam can raise loudness safely, but it performs best when the source is not already crushed. A mix that peaks below 0 dBFS and still breathes usually masters better than one that is already slammed.
2. Fix the mix first
If the low end is wildly uneven or the snare is painfully harsh, correct that in the mix when possible. Mastering is strongest when it makes broad, musical finishing moves.
3. Pick the right preset
Use Auto for release-competitive delivery (pick the Low intensity for the -14 streaming-safe target), genre presets when you want more flavor, and AI Fix only when a track truly has brittle, metallic, unstable artifact patterns.
4. Trust your ears
The processed waveform and meters help, but your ears still matter most. Toggle between original and processed playback and watch for dullness, pumping, or over-bright tops.
Mastering ratings
What musicians say about mastering on TrackGleam
From artists who mastered with TrackGleam.
4.6out of 5 · 19 ratings · last 12 months
★★★★★
AcousticGleamDesktop
Simple, fast, effective, free, and all processed locally. I don’t really see what you could fault the tool for. The prompts to pay aren’t even too intrusive and are integrated quite well.
Translated from French · Show original
Simple, rapide, efficace, gratuit, le tout en local. Je ne vois pas trop ce qu'on peut reprocher à l'outil. L'incitation à payer n'est même pas trop envahissante et plutôt bien intégrée.
Anonymous
How ratings work
Who we ask. When a master on trackgleam.com ends, whether you downloaded it, didn't, or it failed, we may show the same short card after the same short wait, at most once per visit. Anyone can rate at any time on the reviews page.
How we check. We count a rating only from a browser that finished a master or export on trackgleam.com. We can't see your audio, so we can't confirm more than that.
What counts. One rating per browser: your latest replaces earlier ones. We show the simple average of the last 12 months, rounded to one decimal. Not counted: staff and test devices, the demo track, our iOS and Google Play apps (they use the stores' own ratings), browsers that haven't finished a master or export here, and ratings held after an unusual burst. Ratings from people who got free credits or complimentary access from us are shown with a label but not counted.
Words and replies. Words go public after the same 48-hour check whatever the rating, and we never edit them. We never offer anything for a rating. TrackGleam collects these ratings itself; this is not an independent review site.
Want the details? See about TrackGleam, our GleamAI pricing, or get in touch — and our full disclosures and privacy policy.
