The future of music

12 Best Free Online Mastering Services & Software

August 4, 2023
free online mastering services

If you’re just starting out making music at home, why not find a good online mastering service?

Mastering services and software programs can help you polish your track without hassle.

Plus, there are options that won’t cost you a dime.

So in today’s post, we overview the best free online mastering services.

All of these platforms are popular, efficient, and trustworthy – even though they’re completely free. 



Let’s start with the industry leaders in online mastering.

LANDR is arguably the best online mastering platform as well as one of the most popular music distribution services.

However, you can sign up and master a demo for free, but you need to choose one of their pricing plans to continue using their services on a daily basis.

That said, this service might not be a great option if you want to master multiple tracks for free, but it’s definitely worth checking out.

Their subscription plans are quite affordable (starting at $11.99/month) and they include a variety of handy tools and features.

The LANDR mastering program is automated as well as customizable.

It features a smooth drag-and-drop interface and allows you to select the intensity of your master – you can adjust the style between “Warm,” “Balanced,” and “Open”, for instance. 

And you can upload a track to use as a reference for your master. 

Their mastering engine is AI-powered, so you’ll let the program do the rest – but you can rest assured that your track will be pristine. 

After all, LANDR is popular among top producers and studio engineers in the industry who used it to master tracks for Lady Gaga, Snoop Dogg, Post Malone, Gwen Stefani, and others. 



Created in 2016, MAZTR is a popular free online audio mastering platform ideal for beginners.

With MAZTR, you can simply upload a track using drag-and-drop and choose the genre and intensity. 

And after the program’s algorithm analyzes your track, it will optimize your audio and enhance its sound quality. 

If you have some experience, you can also change some things yourself – MAZTR provides some handy tools for customization and optimization, including a multi-band compressor, a 12-band EQ, a stereo widener, and a limiter tool.

With the free account, you’ll also get unlimited previews and downloads, unlimited 192kbps MP3s, one MP3 stem per day, two projects, and an MP3 file editor.

All in all, if you’re looking for free instant audio mastering, MAZTR won’t disappoint you. 

3. CloudBounce


CloudBounce is a reliable mastering platform that will help you polish your tracks without hassle.

Many successful producers and engineers use it as their main audio mastering program. 

Just like Landr, CloudBounce allows you to try the program for free, but if you want to gain access to all its mastering tools, you’ll have to choose one of its membership plans.

Nevertheless, CloudBounce is worthy of consideration – it’s easy to use, and it offers a variety of tools that will allow you to enhance your record in any way you want.

But the program is also automated, so when you upload your track, their engine will analyze it and apply whatever is necessary, including EQ, limiter, compressor, and stereo imaging. 

All things considered, CloudBounce is an excellent mastering option, especially if you’re willing to subscribe. 

4. Emastered


If you’re looking for a free and easy way to master your tracks, you should also check out Emastered.

This popular AI mastering program is built by Grammy Award-winning engineers and designed to provide affordable mastering tools.

With Emastered, you can upload your tracks, adjust the mastering settings, and preview the track before downloading the mastered version.

Their system builds a custom master tailored to the unique features of each song of any genre.

But you can also adjust certain parts of your track and deal with g compressor intensity, basic equalization, equalization intensity, strength, stereo width, and master volume.

5. BandLab Mastering 

BandLab Mastering

BandLab is also among the top free online mastering services. 

Their service is rather simplistic, but it includes everything you need to polish your tracks. 

Depending on your genre, goals, and preferences, you can choose from four preset mastering settings, including Universal, Fire, Clarity, and Tape. 

And you can master as many tracks as you want.  

The platform supports audio and video formats in WAV, MP3, or MP4.

Besides free mastering tools, BandLab offers a free DAW that allows you to create and collaborate across platforms, as well as free cloud storage and multi-track projects.

6. Music Gateway

Music Gateway

Music Gateway offers mastering services and downloads for free.

Their online mastering tool is suitable for beginners as well as more experienced musicians.

If you have a specific sound in mind, you can upload a reference song.

And you can adjust loudness to your liking and choose from warm, balanced, and open styles.

If you want to expand your options and gain access to more tools and features, you can opt for one of their subscription plans.

But even if you decide to use it for free, you’ll get everything you need to prepare your track for release.

Besides online mastering services, Music Gateway also provides music distribution, publishing, licensing, and promotion services. 

7. Major Decibel 

Major Decibel

Major Decibel is an independent online mastering service that offers free mastering tools.

In fact, Major Decibel allows you to master two tracks for free every month.

You don’t even have to register – you just need to drop your track and start mastering.

That said, Major Decibel is by far one of the most convenient online mastering services – you can start polishing your track with just one click.

Their custom audio processing engine will apply a variety of techniques, including bass and sub-bass enhancement, gain and limiting stereo-linked multiband compression, and so on.

You can also choose between three mastering intensity levels: Low, Medium, and High.

8. was founded by Dirk Ulrich (CEO of Brainworx and Plugin Alliance) with the idea to create a viable solution for artists and music producers.

The platform offers CD masters for free, but you can only download your master three times.

Nevertheless, this online service is a great budget-friendly mastering option.

They offer several mastering styles: London (natural style perfect for organic styles like Jazz), LA (ideal for hip-hop and rock), and Miami (perfect for pop and electronic music.)

That said, is ideal for artists focused on a specific music genre.

And if you want to use their music distribution services, you can subscribe and pay $2.99 per track, which is quite affordable. 

9. MasteringBOX


MasteringBOX is another great option for anyone looking for an affordable online mastering service.

It’s very easy to use, so you can easily polish your tracks even if you’re a newcomer.

When you upload your track, their algorithm will analyze the dynamic and spectral characteristics of the track to provide you with the most suitable settings for mastering.

You can then preview your track and fine-tune the parameters before saving the final track, and you can control loudness and EQ.

MasteringBOX provides free master per day, and if you want to upgrade, you can opt for one of their membership plans.

10. AI Mastering

AI Mastering

AI Mastering is an AI-powered online audio mastering service that will help you improve the quality of your sound in a quick and easy way.

The advantage of this service is the possibility to balance the loudness and the dynamic range of your track. 

But the platform also provides a fully automated process with a target loudness fixed. 

So if you’re looking for a mastering service for beginners, this might be a good option for you.

You can use AI Mastering tools 100% for free. 

11. Ian Knowles Mastering 

Ian Knowles Mastering 

This online mastering service is run by Ian Knowles, an experienced programmer, producer, and performer and the creator of Blackbox audio mastering software and the Summit limiter plugin.

With his digital mastering program, you can prepare your music for distribution in a quick and easy way.

It’s a web mastering service, so there is no software involved – you just need to drag and drop your track and the App will start to master your audio right away.

You can’t choose any pre-established styles or preview your track before downloading it though.

Nevertheless, Ian Knowles Mastering tools will allow you to master your tracks in a flash, without having to invest any time or money. 

12. Wavemod


Wavemod is another online mastering service worth checking out.

The platform will help you optimize your track for streaming platforms and generally enhance your audio files.

You can upload files from your phone or computer, including WAV, AIFF, MP3, MP4, and MOV.

And their online mastering algorithm will find the best solution for your track.

You can also tweak the settings and preview your mastered audio.

However, you’ll have to pay to download it – it will cost you $1.49 per minute of audio, and an average of $4 per song.

So, if you want to only pay for what you need, Wavemod might be a good option for you. 

What Is Mastering?

Generally, music production consists of the 5 essential stages: songwriting, arranging, editing, mixing, and mastering. 

So, mastering is the final step of music production – and in many ways, it’s a truly important one. 

Producers use mastering tools and techniques to polish their track and prepare it for distribution.

That said, mastering can entail anything from optimizing the sound quality and balancing the sonic elements. 

And it usually involves the use of tools like equalization, compression, limiting, and stereo enhancement.

A hand adjusting Beat Mixer

Mastering makes songs, albums, and sounds more coherent and consistent – this way, they can meet industry standards.

But the process of optimizing the sound quality of a final mix can be rather tricky, especially for beginners.

It takes a lot of time and practice to learn how everything works.

On the other hand, beginner-friendly DAWs and mastering software programs make the whole process significantly easier. 

But there are still many things to think about when using mastering tools.

And that’s why choosing an online mastering platform or hiring someone professional to master your songs can be very pricey. 

However, some popular platforms offer free mastering services – and today we introduced you to the best ones.

So, it’s possible to master your recordings professionally even if you’re on a budget. 

You just need to know what you’re looking for and choose a service that meets your needs.

Are Online Mastering Services Worth It?

Online mastering services use algorithm-based mastering to polish your tracks. 

Some platforms also use AI to master music – an AI-driven mastering engine can analyze your tracks and make decisions regarding audio limiting, stereo width, EQ, and other important elements.

Now, mastering platforms usually provide instant results.

They’re indeed an efficient and fast way to master your music, especially if you’re just starting out with music production.

The thing is, creating a song from start to finish requires a special set of skills – you need to come up with a compelling melody, write lyrics, arrange a song, record it, and then prepare it for distribution.

It can be a complex process for sure, even though it’s also a very rewarding one.

Nevertheless, if you’re not familiar with audio technology just yet, online mastering service tools will save you a lot of time.

And they will surely save you a ton of money.

Professional studios usually charge $150 and $800 per track – it depends on what you’re looking for though, but either way, professional mastering can be an expensive option for beginners. 

That said, online mastering services are definitely worth checking out, especially if you’re on a budget.

A Woman using Laptop and having a Coffee

More importantly, free online mastering services will help you bring the best out of your recording.

This way, you can focus on the creative part of making music as well as your next steps. 

Best Free Online Mastering Services & Software – Final Thoughts 

We hope our list of the best free online mastering services helped you find the solution you were looking for.

All of the services we mentioned today are used by producers around the world.

They’re ideal for experienced producers as well as newcomers.

Therefore, pick a service that suits you best and get your track ready for distribution in a flash. 

You may also like: Best Online Mastering Services

Will Fenton

Will, the founder of MIDDER, is a multifaceted individual with a deep passion for music and personal finance. As a self-proclaimed music and personal finance geek, he has a keen eye for futuristic technologies, especially those that empower creators and the public.

view profile

hardest rap songs
Previous Story

40 Hardest Rap Songs of All Time

how to find open mic nights near you
Next Story

8 Ways to Find Open Mic Nights Near You

Latest from Music Production

best multi-effects pedal

10 Best Multi-Effects Pedals

You’re a maverick, right? A multifaceted, ambitious musician that refuses to be put in a box or typecast. Someone who effortlessly blends
best compressor pedal

10 Best Compressor Pedals

Ready to elevate your guitar game? Ready to take your talent, versatility, and abilities into the stratosphere? The compressor pedal has your
best chorus pedals

10 Best Chorus Pedals

Familiar with the atmospheric, haunting warble and resonance of “Come As You Are,” “Free Will,” “One Thing Leads to Another,” “Purple Rain,”
best samplers

10 Best Samplers

Ready to enhance your music and indulge in a heretofore unexplored side of your creative development? Ready to develop a keen, untamed